Pediatric Endodontics: Current Concepts and Techniques

Pediatric endodontics focuses on preserving primary and immature permanent teeth affected by dental caries, trauma, developmental abnormalities, or pulpal and periapical disease.

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Contemporary management has shifted from a predominantly tissue-removal approach toward biologically based pulp therapy, emphasizing preservation of healthy pulp tissue whenever possible.

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Current recommendations distinguish treatment according to pulpal diagnosis, tooth restorability, root development, and the expected lifespan of the tooth.
For primary teeth, evidence increasingly supports indirect pulp treatment and calcium-silicate cement pulpotomy for appropriately selected vital teeth. In immature permanent teeth, maintaining pulp vitality is particularly important because it permits continued root maturation and apexogenesis.

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✅ Pulpal Diagnosis in Children
Accurate diagnosis is the foundation of pediatric endodontic treatment. Clinical history, symptoms, clinical examination, radiographic findings, and, when appropriate, pulp sensibility testing should be interpreted collectively.
In primary teeth, symptoms may be less predictable than in permanent teeth; therefore, clinical and radiographic findings should not be interpreted in isolation. Important findings include spontaneous or lingering pain, abnormal mobility, swelling, sinus tract formation, furcation radiolucency, pathological root resorption, and changes in the supporting tissues.

The principal diagnostic categories include:
▪️ Normal pulp
▪️ Reversible pulpitis
▪️ Symptomatic or asymptomatic irreversible pulpitis
▪️ Pulp necrosis
▪️ Previously treated or previously initiated therapy, when applicable
The treatment objective is not simply to eliminate pain but to control infection and preserve the tooth and surrounding tissues for as long as clinically appropriate.

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✅ Vital Pulp Therapy in Primary Teeth
For primary teeth with normal pulp or reversible pulpitis, contemporary management favors conservative approaches that preserve radicular pulp vitality.

Indirect Pulp Treatment
Indirect pulp treatment (IPT) is particularly useful for deep carious lesions when the pulp is considered vital and there are no clinical or radiographic findings indicating irreversible disease.
Selective caries removal reduces the probability of pulp exposure while allowing the remaining dentin and pulp-dentin complex to maintain biological activity. The 2024 AAPD guideline provides strong evidence supporting IPT for deeply carious primary teeth.

Pulpotomy
A pulpotomy removes the coronal pulp while preserving the radicular pulp. It remains an important treatment for vital primary teeth when caries removal results in exposure and the remaining radicular pulp is considered capable of healing.
Current evidence favors calcium-silicate materials, particularly mineral trioxide aggregate (MTA) and Biodentine, over several traditional pulpotomy medicaments. The AAPD 2024 guideline found higher 24-month success with IPT or calcium-silicate cement pulpotomy compared with several alternative approaches.
Consequently, calcium-silicate cement pulpotomy has become a major contemporary approach in primary-tooth vital pulp therapy.

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✅ Non-Vital Pulp Therapy in Primary Teeth
When a primary tooth presents with irreversible pulpitis or pulp necrosis, treatment generally requires removal of infected or necrotic tissue.

Pulpectomy
Pulpectomy involves removal of the pulp from the entire root canal system, followed by canal debridement, disinfection, and filling with a resorbable material.
Hand and rotary instrumentation can both be used. Evidence reviewed by the AAPD indicates that rotary instrumentation can substantially reduce instrumentation time without demonstrating a significant difference in filling quality or overall treatment success compared with manual instrumentation.
Irrigation is an essential component of canal disinfection. Sodium hypochlorite may be used at appropriate concentrations, but because of its tissue toxicity, extrusion beyond the root apex must be avoided. The final obturation material should be compatible with the physiologic resorption of primary roots.

Lesion Sterilization and Tissue Repair
Lesion sterilization and tissue repair (LSTR) is a non-instrumentation or minimally instrumented approach involving antimicrobial agents. It may have a role in selected primary teeth, particularly when conventional pulpectomy is unfavorable.
However, the evidence indicates that its application should be selective. LSTR may be advantageous in teeth with preoperative root resorption, whereas conventional pulpectomy performs better when roots remain intact. Close clinical and radiographic follow-up is therefore essential.

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✅ Vital Pulp Therapy in Immature Permanent Teeth
The management of immature permanent teeth differs fundamentally from that of primary teeth because preservation of vital pulp tissue can allow continued physiologic root development.

For permanent teeth with normal pulp or reversible pulpitis, contemporary options include:
▪️ Indirect pulp treatment
▪️ Direct pulp capping
▪️ Partial pulpotomy
▪️ Complete pulpotomy
The 2025 AAPD guideline indicates that selective caries removal is strongly recommended for deep caries in permanent teeth with normal pulp or reversible pulpitis. When pulp exposure occurs, calcium-silicate materials may be used for direct pulp capping, partial pulpotomy, or complete pulpotomy.

Partial Pulpotomy
Partial pulpotomy removes a limited portion of inflamed coronal pulp while preserving deeper healthy tissue. It is particularly relevant for traumatic exposures and selected carious exposures.
For traumatic exposures, the Cvek technique removes approximately 1–3 mm of superficial inflamed pulp, or more when necessary to reach healthy tissue. Hemostasis and a biologically compatible pulp-capping material are then required.

Complete Pulpotomy
Contemporary evidence has expanded the potential indications for complete pulpotomy in permanent teeth. In selected teeth with symptoms traditionally associated with irreversible pulpitis, complete pulpotomy may be considered when the pulp remains vital and adequate hemostasis can be achieved.
The 2025 AAPD guideline recommends calcium-silicate materials for vital pulp therapy and emphasizes appropriate hemostasis, with sodium hypochlorite recommended for pulp-hemostasis procedures.

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✅ Apexogenesis, Apexification, and Regenerative Endodontics
The primary biological objective in an immature permanent tooth with vital pulp is apexogenesis, allowing continued root development and thickening of the dentinal walls.
When the pulp is necrotic, conventional treatment may compromise further physiologic root development. Depending on the clinical situation, regenerative endodontic procedures or apexification may therefore be considered.
Regenerative approaches aim to promote continued root maturation and development of the apical region. Treatment selection should consider the stage of root development, infection control, restorability, and the long-term prognosis of the tooth. The current AAPD framework includes apexification and regenerative endodontics among the principal options for non-vital immature permanent teeth.

✅ Contemporary Materials and Techniques

Clinical Situation	Preferred Contemporary Approach	Key Consideration
Deep caries, vital primary tooth	Indirect pulp treatment	Selective caries removal and an effective coronal seal
Pulp exposure in a vital primary tooth	Calcium-silicate pulpotomy	MTA or another appropriate calcium-silicate cement
Necrotic primary tooth	Pulpectomy	Effective disinfection and resorbable obturation
Immature permanent tooth, vital pulp	Vital pulp therapy	Preserve vitality and promote apexogenesis
Traumatic pulp exposure	Partial pulpotomy	Remove inflamed superficial pulp and obtain hemostasis
Necrotic immature permanent tooth	Regenerative endodontics or apexification	Root maturity, infection control, and long-term prognosis

Table based on current AAPD recommendations and contemporary evidence.

✅ Technical Principles for Pediatric Endodontic Procedures
Successful pediatric endodontics depends not only on treatment selection but also on infection control, isolation, tissue preservation, and coronal sealing.

Isolation
Rubber dam isolation should be considered fundamental whenever endodontic treatment is performed. It improves moisture control, reduces microbial contamination, and protects the child from aspiration or ingestion of instruments and materials.

Magnification
Magnification can improve visualization of pulp tissue and facilitate assessment during vital pulp procedures. Its value is particularly relevant when determining the quality of the remaining pulp and controlling hemorrhage.

Hemostasis
In vital pulp therapy, controlled hemorrhage is an important clinical indicator. Persistent bleeding may indicate more extensive inflammation and influence the decision to remove additional pulp tissue or change the treatment approach.

Coronal Seal
A durable coronal restoration is essential because bacterial leakage can compromise otherwise successful pulp therapy. The definitive restoration should provide an effective seal and sufficient structural protection for the expected life of the tooth.

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💬 Discussion
The contemporary concept of pediatric endodontics is increasingly centered on biological preservation rather than routine removal of the entire pulp. This is particularly evident in the growing evidence supporting IPT and calcium-silicate pulpotomy in primary teeth and vital pulp therapy in immature permanent teeth.
The 2024 AAPD guideline found high-certainty evidence favoring IPT and calcium-silicate cement pulpotomy for deeply carious vital primary teeth. It also moved clinical practice further away from several traditional medicaments, including calcium hydroxide as a primary pulpotomy medicament and toward calcium-silicate materials.
At the same time, the 2025 AAPD guideline for permanent teeth reflects an important conceptual change: irreversible pulpitis does not automatically require complete pulpectomy or conventional root canal treatment when the pulp remains clinically viable and the tooth can be appropriately managed. Selected cases may benefit from partial or complete pulpotomy using calcium-silicate materials.
Nevertheless, evidence quality is not uniform across all pediatric endodontic interventions. Treatment decisions should therefore integrate the best available evidence with clinical diagnosis, tooth restorability, root development, infection status, patient cooperation, and long-term prognosis.

🎯 Clinical Recommendations
1. Prioritize biological diagnosis over symptoms alone. Combine history, clinical examination, radiographic findings, and pulp testing when appropriate.
2. Preserve vital pulp tissue whenever predictable healing is possible, particularly in immature permanent teeth where vitality supports continued root development.
3. Consider IPT as a first-line approach for appropriately selected deeply carious vital primary teeth, avoiding unnecessary pulp exposure.
4. When pulpotomy is indicated in a primary tooth, calcium-silicate cements such as MTA or Biodentine should be strongly considered based on current evidence.
5. For necrotic primary teeth, select pulpectomy or carefully indicated LSTR according to root resorption, infection, restorability, and prognosis.
6. In immature permanent teeth, consider partial or complete pulpotomy before conventional root canal treatment when the pulp remains potentially reparable and adequate hemostasis can be achieved.
7. Do not compromise apical development unnecessarily. Preservation of pulp vitality in immature permanent teeth should remain a major treatment objective.
8. Establish an effective coronal seal and schedule clinical and radiographic follow-up, because treatment success depends on both biological management and restoration quality.

✍️ Conclusion
Pediatric endodontics has evolved toward conservative, biologically oriented treatment. Current evidence supports indirect pulp treatment and calcium-silicate pulpotomy as important approaches for selected primary teeth, while vital pulp therapy has an increasingly important role in immature permanent teeth.
The fundamental principle is to match the intervention to the biological condition of the pulp rather than relying exclusively on historical treatment protocols. Accurate diagnosis, strict isolation, effective disinfection, appropriate biomaterials, durable coronal sealing, and systematic follow-up remain essential to achieving predictable outcomes.

📚 References

✔ American Academy of Pediatric Dentistry. (2026). Pulp therapy for primary and immature permanent teeth. In The Reference Manual of Pediatric Dentistry. American Academy of Pediatric Dentistry.
✔ Coll, J. A., Dhar, V., Chen, C.-Y., Crystal, Y. O., Guelmann, M., Marghalani, A. A., AlShamali, S., Xu, Z., Glickman, G. N., & Wedeward, R. (2024). Use of vital pulp therapies in primary teeth 2024. Pediatric Dentistry, 46(1), 13–26.
✔ Coll, J. A., Dhar, V., Chen, C.-Y., et al. (2023). Primary tooth vital pulp treatment interventions: Systematic review and meta-analyses. Pediatric Dentistry, 45(6), 474–546.
✔ Coll, J. A., Vargas, K., Marghalani, A. A., et al. (2020). Use of non-vital pulp therapies in primary teeth. Pediatric Dentistry, 42(5), 337–349.
✔ Coll, J. A., Dhar, V., Guelmann, M., Crystal, Y. O., Chen, C.-Y., Marghalani, A. A., Alshamali, S., Xu, Z., Ather, A., Sabeti, M., & Wedeward, R. (2025). Guideline for use of vital pulp therapy in permanent teeth. Pediatric Dentistry, 47(5), 299–311.
✔ Duggal, M., Gizani, S., Albadri, S., Krämer, N., Stratigaki, E., Tong, H. J., Seremidi, K., Kloukos, D., BaniHani, A., Santamaría, R. M., Hu, S., Maden, M., Amend, S., Boutsiouki, C., Bekes, K., Lygidakis, N., Frankenberger, R., Monteiro, J., Anttonen, V., ... Parekh, S. (2022). Best clinical practice guidance for treating deep carious lesions in primary teeth: An EAPD policy document. European Archives of Paediatric Dentistry, 23(5), 659–666. https://doi.org/10.1007/s40368-022-00718-6
✔ Da Silva, E. J. N. L., et al. (2024). Success of primary teeth pulpotomy using calcium silicate cements: A systematic review and meta-analysis of randomized clinical trials. Pediatric Dentistry, 46(6), 373–395.

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Advances in Pediatric Endodontics: Bioceramic Sealers for Primary Teeth

Bioceramic sealers are among the most important innovations in pediatric endodontics. They are designed to seal root canals more effectively while being highly compatible with the body's natural tissues.

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In primary (baby) teeth, these materials may improve treatment outcomes by reducing bacterial leakage and supporting healing around the roots.

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Although traditional materials such as zinc oxide-eugenol remain widely used, bioceramic sealers are gaining attention because of their excellent biological properties and sealing ability. However, their use in primary teeth should be based on scientific evidence and careful case selection.

✅ What Are Bioceramic Sealers?
Bioceramic sealers are calcium silicate-based materials developed to seal the root canal after cleaning and shaping. Unlike conventional sealers, they interact with body fluids and can form hydroxyapatite, a mineral naturally found in teeth and bone.

Their main characteristics include:
▪️ Excellent biocompatibility
▪️ Strong sealing ability
▪️ High antibacterial environment due to alkaline pH
▪️ Low shrinkage during setting
▪️ Ability to support tissue healing
These properties make them attractive for both permanent and primary teeth.

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✅ Why Are They Important in Primary Teeth?
Primary teeth have unique characteristics:
▪️ Thin dentin walls
▪️ Complex root canal anatomy
▪️ Physiological root resorption before tooth exfoliation
▪️ Close relationship with the developing permanent tooth

Because of these factors, the ideal filling material should:
▪️ Seal the canal effectively
▪️ Be gentle to surrounding tissues
▪️ Not interfere with normal root resorption
▪️ Reduce the risk of reinfection
Bioceramic sealers aim to meet many of these requirements.

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✅ Main Advantages

1. Excellent Biocompatibility
One of the greatest advantages is that bioceramic sealers are well tolerated by surrounding tissues, reducing inflammation if small amounts extend beyond the root.

2. Superior Sealing Ability
A tight seal prevents bacteria from re-entering the canal system.
A better seal increases the likelihood of long-term treatment success.

3. Antibacterial Properties
Their naturally high pH creates an unfavorable environment for many bacteria responsible for endodontic infections.
Although they do not replace proper canal cleaning, they provide an additional level of protection.

4. Bioactivity
Unlike conventional sealers, bioceramic materials actively interact with surrounding tissues.
They can stimulate mineral deposition and support natural healing.

5. Moisture-Friendly Setting
Primary teeth are often difficult to keep completely dry.
Many bioceramic sealers actually benefit from moisture during their setting reaction, making clinical handling easier.

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✅ Current Limitations
Despite their advantages, several limitations remain.

▪️ Higher cost than traditional materials.
▪️ Limited long-term clinical evidence in primary teeth compared with permanent teeth.
▪️ Some products may not resorb at the same rate as primary tooth roots, an important consideration before widespread use.
▪️ Clinical performance varies depending on the specific formulation.
Therefore, not every bioceramic sealer should automatically replace conventional pediatric materials.

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✅ Current Clinical Applications
Bioceramic sealers are being investigated for:

▪️ Pulpectomy in primary teeth
▪️ Management of infected root canals
▪️ Cases requiring excellent apical sealing
▪️ Teeth with periapical inflammation
Most specialists recommend using them when the clinical situation is appropriate and after considering current scientific evidence.

✅ How Do They Compare with Zinc Oxide-Eugenol?

Feature	Bioceramic Sealers	Zinc Oxide-Eugenol
Biocompatibility	Excellent	Good
Sealing Ability	Very High	Moderate
Bioactivity	Yes	No
Antibacterial Environment	High pH	Moderate
Clinical History	Emerging	Extensive
Cost	Higher	Lower
Long-Term Evidence in Primary Teeth	Growing	Extensive

✅ What Does Current Research Say?
Recent studies suggest that bioceramic sealers provide promising biological and sealing properties in pediatric endodontics. Laboratory and early clinical evidence indicates favorable tissue compatibility and reduced bacterial leakage.
However, researchers consistently emphasize that high-quality long-term clinical trials in primary teeth remain limited. Additional evidence is needed before these materials can be considered the universal first choice for every pulpectomy.

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💬 Discussion
The development of bioceramic sealers represents a significant step forward in pediatric endodontics. Their biological compatibility, sealing capacity, and bioactive behavior offer advantages over many traditional materials.
Nevertheless, primary teeth have unique biological characteristics, particularly physiological root resorption. For this reason, clinicians should evaluate whether a specific bioceramic product is suitable for each case rather than assuming that all formulations behave similarly. Current evidence supports their potential, but continued research is essential to define their long-term role.

🎯 Recommendations
▪️ Select bioceramic sealers according to the clinical indication and manufacturer recommendations.
▪️ Maintain thorough canal cleaning and disinfection, as no sealer can compensate for inadequate treatment.
▪️ Consider the expected root resorption pattern when treating primary teeth.
▪️ Stay updated with new clinical studies as evidence continues to evolve.
▪️ Explain treatment options and expected outcomes clearly to parents or caregivers.

✍️ Conclusion
Bioceramic sealers are an important advancement in pediatric endodontics, offering excellent biocompatibility, superior sealing ability, and bioactive properties that may improve the success of pulpectomy in primary teeth.
While early evidence is encouraging, long-term clinical research is still developing. At present, these materials should be viewed as a valuable option within evidence-based pediatric dentistry rather than a complete replacement for established filling materials.

📚 References

✔ Coll, J. A., Dhar, V., Vargas, K., Chen, C. Y., Crystal, Y. O., & Alvares, O. (2020). Use of non-vital pulp therapies in primary teeth. Pediatric Dentistry, 42(6), 337–349.
✔ Donnermeyer, D., Bürklein, S., Dammaschke, T., & Schäfer, E. (2019). Endodontic sealers based on calcium silicates: A systematic review. Odontology, 107(4), 421–436. https://doi.org/10.1007/s10266-018-0400-3
✔ European Society of Endodontology. (2021). European Society of Endodontology position statement: Management of deep caries and the exposed pulp. International Endodontic Journal, 54(7), 923–934.
✔ Moinzadeh, A. T., Zerbst, W., Boutsioukis, C., Shemesh, H., & Zaslansky, P. (2021). Outcome of bioceramic sealers in endodontic treatment: A review of current evidence. International Endodontic Journal, 54(11), 1977–1994.
✔ Nagendrababu, V., Duncan, H. F., Fouad, A. F., Kirkevang, L. L., Parashos, P., Priya, E., Jayaraman, J., Siqueira, J. F., Jr., & Dummer, P. M. H. (2023). PRILE 2021 guidelines for reporting laboratory studies in Endodontology: Explanation and elaboration. International Endodontic Journal, 56(Suppl. 2), 3–64.
✔ Taha, N. A., Abdulkhader, S. Z., & Al-Qudah, A. A. (2022). Calcium silicate–based root canal sealers: A review of biological and clinical properties. Journal of Clinical Medicine, 11(17), 5067. https://doi.org/10.3390/jcm11175067

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Direct Pulp Capping in Children: Indications and Technique

Direct pulp capping (DPC) is a vital pulp therapy procedure aimed at preserving pulp vitality after a small mechanical, traumatic, or carious pulp exposure. In pediatric dentistry, careful case selection and the use of bioactive materials are essential for achieving favorable clinical outcomes.

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✅ Introduction
Direct pulp capping in children is a conservative treatment designed to maintain the vitality and function of the dental pulp following a localized exposure. The procedure involves placing a biocompatible material directly over the exposed pulp tissue to promote healing and reparative dentin formation.
The success of direct pulp capping depends on several factors, including the cause and size of the exposure, pulpal status, bacterial control, and the sealing ability of the final restoration. Proper diagnosis remains critical, particularly in pediatric patients where preserving pulp vitality contributes to normal root development and long-term tooth retention.

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✅ Indications
Direct pulp capping may be indicated when the following criteria are met:

Primary Teeth
▪️ Small mechanical pulp exposure during cavity preparation.
▪️ Traumatic pulp exposure with minimal contamination.
▪️ Vital pulp without signs of irreversible inflammation.
▪️ Adequate hemorrhage control within a few minutes.

Young Permanent Teeth
▪️ Small carious or mechanical pulp exposure.
▪️ Vital pulp diagnosed as normal or reversibly inflamed.
▪️ Teeth with incomplete root formation requiring continued root development.
▪️ Absence of spontaneous pain or radiographic pathology.

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✅ Contraindications
Direct pulp capping should generally be avoided when:

▪️ Signs of irreversible pulpitis are present.
▪️ Spontaneous or persistent pain is reported.
▪️ Excessive or uncontrolled pulpal bleeding occurs.
▪️ Radiographic evidence of furcation or periapical pathology exists.
▪️ Presence of pulp necrosis or dental abscess.

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✅ Clinical Technique

Step 1: Diagnosis and Case Selection
A comprehensive clinical and radiographic evaluation should confirm pulp vitality and the absence of irreversible pulpal disease.

Step 2: Local Anesthesia and Isolation
Administer local anesthesia and place a rubber dam to ensure optimal isolation and bacterial control.

Step 3: Hemorrhage Control
Control pulpal bleeding using sterile saline solution or sodium hypochlorite (1–3%). Hemostasis should be achieved within several minutes.

Step 4: Placement of the Capping Material
Apply a biocompatible material directly over the exposed pulp tissue.
Preferred materials include:
▪️ Mineral Trioxide Aggregate (MTA)
▪️ Biodentine
▪️ Other calcium silicate-based biomaterials
These materials stimulate reparative dentin formation and demonstrate excellent sealing properties.

Step 5: Definitive Restoration
Place a well-sealed permanent restoration immediately or according to the manufacturer's recommendations to prevent bacterial microleakage.

Step 6: Follow-Up
Periodic clinical and radiographic evaluations are recommended to monitor:
▪️ Continued pulp vitality.
▪️ Absence of pain or infection.
▪️ Normal root development in immature permanent teeth.
▪️ Formation of a dentin bridge when applicable.

Advantages of Direct Pulp Capping

Advantage	Clinical Benefit
Vital pulp preservation	Maintains normal biological function and tooth vitality.
Minimally invasive approach	Conserves healthy tooth structure and reduces tissue removal.
Continued root development	Supports apexogenesis in immature permanent teeth.
Reduced treatment complexity	Less invasive than pulpotomy or pulpectomy procedures.
High success with modern materials	Improved long-term prognosis when using MTA or Biodentine.

💬 Discussion
Recent pediatric dentistry guidelines emphasize that successful direct pulp capping relies primarily on accurate diagnosis and strict control of bacterial contamination. Historically, calcium hydroxide was considered the gold standard; however, contemporary evidence indicates that calcium silicate-based materials such as MTA and Biodentine provide superior sealing ability, biocompatibility, and dentin bridge quality.
In primary teeth, the indication remains more selective due to concerns regarding underlying pulpal inflammation. In contrast, young permanent teeth with reversible pulpitis demonstrate favorable outcomes when treated with modern bioactive materials. The preservation of pulp vitality is particularly important because it supports apexogenesis and continued root maturation.

🎯 Recommendations
▪️ Perform meticulous pulpal diagnosis before treatment.
▪️ Use rubber dam isolation whenever possible.
▪️ Achieve complete hemorrhage control before placing the capping material.
▪️ Prefer MTA or Biodentine over traditional calcium hydroxide when available.
▪️ Ensure an effective coronal seal to minimize bacterial leakage.
▪️ Schedule periodic clinical and radiographic follow-up examinations.

✍️ Conclusion
Direct pulp capping in children is an effective vital pulp therapy procedure when appropriate case selection and modern bioactive materials are utilized. Current evidence supports the use of MTA and Biodentine as preferred materials due to their favorable biological and clinical performance. Accurate diagnosis, proper hemorrhage control, and a durable coronal seal remain the key determinants of long-term success.

📚 References

✔ American Academy of Pediatric Dentistry. (2024). Use of vital pulp therapies in primary teeth with deep caries lesions. The Reference Manual of Pediatric Dentistry. Chicago, IL: American Academy of Pediatric Dentistry.
✔ American Academy of Pediatric Dentistry. (2024). Pulp therapy for primary and immature permanent teeth. The Reference Manual of Pediatric Dentistry. Chicago, IL: American Academy of Pediatric Dentistry.
✔ Hilton, T. J., Ferracane, J. L., & Mancl, L. (2013). Comparison of CaOH with MTA for direct pulp capping: A PBRN randomized clinical trial. Journal of Dental Research, 92(7 Suppl), 16S–22S.
✔ Tziafas, D., Pantelidou, O., Alvanou, A., Belibasakis, G., & Papadimitriou, S. (2002). The dentinogenic effect of mineral trioxide aggregate in short-term capping experiments. International Endodontic Journal, 35(3), 245–254.
✔ Witherspoon, D. E. (2008). Vital pulp therapy with new materials: New directions and treatment perspectives—Permanent teeth. Journal of Endodontics, 34(7 Suppl), S25–S28.

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Obsolete Materials in Endodontics and Pulp Therapy: What Should No Longer Be Used?

Modern dentistry has evolved significantly due to advances in biomaterials, bioactive cements, and evidence-based protocols.

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Several materials historically used in endodontics and pulp therapy are now considered obsolete, unsafe, or less effective because of their toxicity, poor sealing ability, cytotoxic effects, or inferior long-term outcomes.
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This article reviews the main materials that should no longer be routinely used in endodontics and pediatric dentistry, including formocresol, paraformaldehyde, arsenical compounds, hydrogen peroxide, and amalgam retrofillings.

✅ Introduction
The evolution of endodontic and pulp therapy procedures has been strongly influenced by scientific research and biomaterial innovation. Historically, many dental materials were introduced before modern biocompatibility standards existed. While some provided short-term clinical success, long-term studies later demonstrated important disadvantages such as tissue toxicity, inflammatory reactions, leakage, and poor regenerative capacity.
Today, minimally invasive and biologically driven dentistry prioritizes materials capable of preserving pulp vitality, stimulating dentin formation, and promoting tissue repair. Consequently, numerous traditional substances have been abandoned or significantly restricted.
Understanding which materials are outdated is essential for both clinicians and dental students in order to avoid complications and improve treatment prognosis.

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✅ Why Some Dental Materials Become Obsolete
Several factors contribute to the discontinuation or restriction of materials in endodontics and pulp therapy:

▪️ Cytotoxicity to pulpal or periapical tissues.
▪️ Mutagenic or carcinogenic potential.
▪️ Poor sealing ability.
▪️ Tissue necrosis.
▪️ Chronic inflammatory reactions.
▪️ Inferior clinical outcomes compared with modern biomaterials.
▪️ Availability of safer and more bioactive alternatives.

Modern dentistry increasingly favors materials that are:
▪️ Bioactive.
▪️ Biocompatible.
▪️ Antibacterial.
▪️ Sealing.
▪️ Regenerative.
▪️ Stable over time.

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1. Formocresol in Pediatric Dentistry
Historical Use
Formocresol was widely used for decades in pulpotomy procedures of primary teeth because of its ability to fix and mummify pulpal tissue.

Why It Is No Longer Recommended
Current evidence has raised serious concerns regarding its biological safety.

Main Disadvantages
▪️ Contains formaldehyde.
▪️ Potential mutagenic and carcinogenic effects.
▪️ Systemic distribution after application.
▪️ Tissue fixation instead of true healing.
▪️ Chronic inflammatory response.

Current Alternatives
Modern pulpotomy protocols favor bioactive materials such as:
▪️ Mineral trioxide aggregate (MTA).
▪️ Biodentine.
▪️ Calcium silicate-based cements.
▪️ Bioceramic materials.
These materials stimulate dentin bridge formation and preserve healthier pulpal tissue.

2. Paraformaldehyde in Endodontics
Historical Use
Paraformaldehyde-containing pastes were used to devitalize inflamed pulps, especially in difficult anesthesia situations.

Why It Should Not Be Used
Paraformaldehyde is highly toxic and may diffuse beyond the root canal system.

Clinical Risks
▪️ Severe tissue necrosis.
▪️ Bone destruction.
▪️ Persistent pain.
▪️ Delayed healing.
▪️ Damage to periodontal structures.
▪️ Neurotoxicity in severe cases.
Because of these complications, modern endodontics strongly discourages its use.

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3. Arsenical Compounds
Historical Use
Arsenic compounds were historically employed to intentionally devitalize pulp tissue before root canal treatment.

Why They Are Obsolete
Arsenic is considered one of the most dangerous substances ever used in dentistry.

Serious Complications
▪️ Osteonecrosis.
▪️ Bone sequestration.
▪️ Gingival necrosis.
▪️ Periodontal destruction.
▪️ Severe inflammatory reactions.
▪️ Irreversible tissue damage.
Modern anesthesia and rotary instrumentation have completely eliminated the need for arsenical compounds.

4. Hydrogen Peroxide in Endodontics
Previous Use
Hydrogen peroxide was previously combined with sodium hypochlorite during root canal irrigation because of its bubbling effect.

Why It Is No Longer Recommended
Although it creates effervescence, hydrogen peroxide does not effectively dissolve organic tissue or calcium hydroxide remnants.

Main Problems
▪️ Oxygen bubble formation.
▪️ Risk of emphysema.
▪️ ▪️ Reduced effectiveness of sodium hypochlorite.
▪️ Limited antimicrobial effectiveness compared with modern irrigants.
▪️ Potential extrusion into periapical tissues.

Current Irrigation Protocols
Modern endodontics primarily uses:
▪️ Sodium hypochlorite (NaOCl).
▪️ EDTA 17%.
▪️ Chlorhexidine in selected situations.
▪️ Sonic or ultrasonic irrigation activation.

5. Zinc Oxide Eugenol Directly Over Permanent Pulp Tissue
Historical Use
Zinc oxide eugenol (ZOE) was commonly used as a sedative base and temporary restorative material.

Limitations in Vital Pulp Therapy
Although still useful in some restorative applications, direct contact with pulp tissue is no longer preferred.

Problems
▪️ Cytotoxic effect of eugenol.
▪️ Chronic pulpal irritation.
▪️ Inferior dentin bridge formation.
▪️ Reduced regenerative capacity.

Better Alternatives
▪️ MTA.
▪️ Biodentine.
▪️ Bioceramic liners.
These materials provide superior sealing and biological repair.

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💬 Discussion
The transition from traditional dental materials to modern bioactive biomaterials reflects the growing emphasis on biological preservation and minimally invasive dentistry. Contemporary evidence demonstrates that many older substances once considered acceptable can negatively affect pulp vitality, periapical healing, and long-term treatment success.
Among all obsolete materials, arsenical compounds and paraformaldehyde represent the most hazardous due to their destructive potential. Likewise, formocresol remains controversial because of its formaldehyde content and systemic concerns.
Modern bioactive materials such as MTA and Biodentine have significantly improved outcomes in both adult and pediatric dentistry by promoting tissue regeneration rather than tissue fixation or necrosis.

🎯 Clinical Recommendations
▪️ Avoid outdated devitalizing agents.
▪️ Use bioactive materials whenever possible.
▪️ Prioritize minimally invasive pulp therapy.
▪️ Follow evidence-based irrigation protocols.
▪️ Use sodium hypochlorite and EDTA instead of hydrogen peroxide.
▪️ Select bioceramic materials for pulp capping and apical surgery.
▪️ Continuously update clinical protocols according to current literature.

✍️ Conclusion
Several materials historically used in endodontics and pulp therapy are now considered obsolete because of their toxicity, poor biological behavior, and inferior clinical outcomes. Modern dentistry favors biocompatible and regenerative materials capable of preserving pulp vitality and improving long-term success.
Clinicians should avoid the routine use of substances such as formocresol, paraformaldehyde, arsenic compounds, and hydrogen peroxide in endodontic procedures. Instead, evidence-based biomaterials like MTA, Biodentine, and calcium silicate cements should be prioritized to ensure safer and more predictable treatments.

📚 References

✔ Torabinejad M, Parirokh M. Mineral trioxide aggregate: a comprehensive literature review. Part II: Leakage and biocompatibility investigations. Journal of Endodontics. 2010;36(2):190-202.
✔ American Academy of Pediatric Dentistry. Pulp therapy for primary and immature permanent teeth. Pediatric Dentistry. 2024;46(6):399-407. Siqueira JF, Rôças IN. Clinical implications and microbiology of bacterial persistence after treatment procedures. Journal of Endodontics. 2008;34(11):1291-1301.
✔ Estrela C, Estrela CRA, Decurcio DA, Hollanda ACB, Silva JA. Antimicrobial efficacy of ozonated water, gaseous ozone, sodium hypochlorite and chlorhexidine in infected human root canals. International Endodontic Journal. 2007;40(2):85-93.
✔ Parirokh M, Torabinejad M. Mineral trioxide aggregate: a comprehensive literature review. Part I: Chemical, physical, and antibacterial properties. Journal of Endodontics. 2010;36(1):16-27.
✔ Fuks AB. Current concepts in vital primary pulp therapy. European Journal of Paediatric Dentistry. 2002;3(3):115-120.
✔ Haapasalo M, Shen Y, Wang Z, Gao Y. Irrigation in endodontics. British Dental Journal. 2014;216(6):299-303.

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CTZ Paste in Pediatric Dentistry: Indications, Composition, and Success Rates

CTZ paste is a medicament used in pediatric dentistry for the treatment of infected primary teeth, particularly in cases of extensive caries associated with irreversible pulp inflammation or necrosis. The acronym CTZ refers to its three active components: chloramphenicol, tetracycline, and zinc oxide-eugenol.

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This article reviews the composition, indications, contraindications, clinical protocol, and success rates of CTZ paste based on current scientific evidence.

✅ Introduction
Management of deep carious lesions in primary teeth remains a significant challenge in pediatric dentistry. Conventional pulpectomy requires mechanical instrumentation and multiple appointments, which may be difficult in preschool children with limited cooperation.
To address these limitations, CTZ paste was introduced by Soller and Cappiello in Latin America as an alternative root canal filling material that allows disinfection of the root canal system without mechanical instrumentation. The antimicrobial properties of chloramphenicol and tetracycline, combined with the sealing ability of zinc oxide-eugenol, provide a minimally invasive treatment option for primary molars with pulp pathology.

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✅ What Is CTZ Paste?
CTZ paste is an intracanal medicament composed of two broad-spectrum antibiotics and zinc oxide-eugenol. It is designed to sterilize infected root canals in primary teeth while avoiding extensive instrumentation.

✅ Composition of CTZ Paste

Component	Function
Chloramphenicol	Broad-spectrum antibiotic effective against aerobic and anaerobic bacteria.
Tetracycline	Antibiotic active against gram-positive and gram-negative microorganisms.
Zinc Oxide-Eugenol	Provides sealing properties, antibacterial action, and paste consistency.

Common Formulation
The original formulation includes:
▪️ 500 mg chloramphenicol
▪️ 500 mg tetracycline
▪️ Zinc oxide powder mixed with one drop of eugenol until a thick consistency is obtained
The proportions may vary slightly depending on institutional protocols.

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✅ Mechanism of Action
The success of CTZ paste is based on:

1. Broad-spectrum antimicrobial activity
2. Diffusion through dentinal tubules and accessory canals
3. Suppression of residual microorganisms
4. Sealing of the pulp chamber and canal orifices
This allows clinical resolution of infection even when root canals are not mechanically instrumented.

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✅ Indications for CTZ Paste
CTZ paste is indicated primarily for primary molars presenting with:

▪️ Extensive caries with pulp exposure
▪️ Irreversible pulpitis
▪️ Pulp necrosis
▪️ Furcation radiolucency of endodontic origin
▪️ Presence of fistula or abscess without excessive pathological root resorption
▪️ Patients with limited cooperation
▪️ Situations requiring short treatment times

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✅ Contraindications
CTZ paste should not be used when:

▪️ The tooth is non-restorable
▪️ Physiologic or pathologic root resorption exceeds one-third of root length
▪️ Advanced mobility is present
▪️ There is severe destruction of the supporting bone
▪️ The patient has a known allergy to tetracycline or chloramphenicol
▪️ Permanent successor eruption is imminent

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✅ Clinical Procedure

Step-by-Step Technique
1. Administer local anesthesia and isolate the tooth.
2. Remove caries and gain access to the pulp chamber.
3. Remove necrotic coronal pulp tissue.
4. Irrigate with saline solution.
5. Dry the pulp chamber.
6. Place CTZ paste over the canal entrances.
7. Cover with zinc oxide-eugenol or glass ionomer cement.
8. Restore the tooth definitively, preferably with a stainless steel crown.

✅ Success Rates of CTZ Paste
Several studies have reported favorable clinical and radiographic outcomes.

Reported Outcomes

Study	Follow-up	Clinical Success	Radiographic Success
Doneria et al., 2017	12 months	100%	86.7%
Nakornchai et al., 2010	24 months	96%	84%
Barcelos et al., 2015	12 months	93–100%	80–95%
Recent Systematic Reviews	12–24 months	>90%	75–95%

These findings suggest that CTZ paste is a reliable option in selected cases, especially where conventional pulpectomy is impractical.

✅ Advantages of CTZ Paste

▪️ No mechanical instrumentation required
▪️ Significantly reduced treatment time
▪️ Lower technical complexity
▪️ Good antimicrobial effectiveness
▪️ High clinical success rates
▪️ Suitable for very young or anxious children

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✅ Limitations and Concerns
Despite promising results, several concerns remain:

Antibiotic-Related Issues
▪️ Use of chloramphenicol raises concerns because of rare but serious systemic adverse effects, such as aplastic anemia.
▪️ Potential contribution to antimicrobial resistance.
▪️ Limited acceptance in some countries due to regulatory restrictions.

Tooth Discoloration
Tetracycline may cause intrinsic staining if inadvertently incorporated into surrounding structures.

Lack of Standardization
Differences in formulation and application protocols may affect treatment outcomes.

✅ Comparison with Other Pulpectomy Materials

Material	Clinical Success	Main Advantages	Limitations
CTZ Paste	90–100%	Fast, simple, and does not require canal instrumentation.	Contains antibiotics with potential regulatory and safety concerns.
Zinc Oxide-Eugenol (ZOE)	80–95%	Widely available and extensively studied.	May resorb more slowly than primary tooth roots.
Vitapex® (Calcium Hydroxide + Iodoform)	85–100%	Highly resorbable, biocompatible, and easy to apply.	Higher cost and possible intracanal voids.
Metapex®	85–98%	Good antimicrobial activity and favorable resorption profile.	Can resorb faster than the physiologic root resorption process.
Endoflas FS	90–98%	Excellent antimicrobial properties and resorbs when extruded.	May cause mild postoperative irritation in some cases.

💬 Discussion
Current evidence indicates that CTZ paste is an effective alternative for treating infected primary molars, especially when cooperation is limited and rapid intervention is necessary. Clinical success is consistently high, and radiographic outcomes are generally favorable.
However, the presence of chloramphenicol remains controversial due to safety concerns and regulatory limitations in several countries. For this reason, clinicians should consider local guidelines, antibiotic stewardship principles, and parental informed consent before selecting this material.
Although randomized clinical trials and systematic reviews support CTZ paste, long-term evidence and standardized protocols are still needed.

🎯 Clinical Recommendations
1. Reserve CTZ paste for restorable primary molars with adequate root structure.
2. Use stainless steel crowns for definitive restoration to improve longevity.
3. Obtain informed consent when using antibiotic-containing materials.
4. Monitor clinically and radiographically every 6–12 months.
5. Consider alternative materials if local regulations restrict chloramphenicol use.

✍️ Conclusion
CTZ paste is a practical and evidence-based option for non-instrumentation endodontic treatment in primary teeth. Its simplified technique and high success rates make it particularly valuable in pediatric patients with behavioral limitations. Nevertheless, concerns regarding chloramphenicol and antimicrobial stewardship require careful case selection and adherence to current regulations. When used appropriately and followed by durable coronal restoration, CTZ paste can provide predictable outcomes until normal exfoliation of the primary tooth.

📚 References

✔ Barcelos, R., Santos, M. P. A., Primo, L. G., Luiz, R. R., & Maia, L. C. (2015). ZOE paste pulpectomies outcome in primary teeth: A systematic review. Journal of Clinical Pediatric Dentistry, 39(3), 241–248. https://doi.org/10.17796/1053-4628-39.3.241
✔ Doneria, D., Thakur, S., Singhal, P., Chauhan, D., Jayam, C., & Uppal, N. (2017). Comparative evaluation of clinical and radiographic success of three pulpotomy agents in primary molars. Journal of Clinical and Diagnostic Research, 11(8), ZC09–ZC12. https://doi.org/10.7860/JCDR/2017/25835.10362
✔ Nakornchai, S., Banditsing, P., & Visetratana, N. (2010). Clinical evaluation of 3Mix and Vitapex as treatment options for pulpally involved primary molars. International Journal of Paediatric Dentistry, 20(3), 214–221. https://doi.org/10.1111/j.1365-263X.2010.01044.x
✔ Rosenblatt, A., Stamford, T. C. M., & Niederman, R. (2009). Silver diamine fluoride: A caries “silver-fluoride bullet.” Journal of Dental Research, 88(2), 116–125. https://doi.org/10.1177/0022034508329406
✔ Trairatvorakul, C., & Chunlasikaiwan, S. (2008). Success of pulpectomy with zinc oxide-eugenol vs calcium hydroxide/iodoform paste in primary molars. International Journal of Paediatric Dentistry, 18(4), 303–308. https://doi.org/10.1111/j.1365-263X.2008.00921.x

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Formocresol vs Modern Pulpotomy Agents: Safety & Outcomes

Pulpotomy in primary teeth has evolved significantly, transitioning from traditional medicaments like formocresol (FC) to biocompatible materials such as mineral trioxide aggregate (MTA), Biodentine, and ferric sulfate.

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This article critically evaluates safety concerns, clinical outcomes, and current evidence-based recommendations, highlighting why modern agents are increasingly preferred in pediatric dentistry.

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✅ Introduction
For decades, formocresol pulpotomy was considered the gold standard due to its ease of use and high clinical success rates. However, concerns regarding toxicity, systemic distribution, and potential carcinogenicity have prompted a shift toward bioactive and regenerative materials.
Today, clinicians must balance clinical success, biological compatibility, and long-term safety when selecting pulpotomy agents.

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✅ Current Pulpotomy Agents: An Overview

1. Formocresol (FC)
▪️ Fixative agent causing partial devitalization of pulp tissue
▪️ Antibacterial effect
▪️ Historically high success rates
▪️ Concerns: cytotoxicity and systemic exposure to formaldehyde

2. Mineral Trioxide Aggregate (MTA)
▪️ Bioactive material promoting dentin bridge formation
▪️ Excellent sealing ability
▪️ High biocompatibility

3. Biodentine
▪️ Calcium silicate-based material
▪️ Faster setting than MTA
▪️ Stimulates pulp regeneration

4. Ferric Sulfate
▪️ Hemostatic agent
▪️ Comparable outcomes to FC in some studies

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✅ Clinical Outcomes: Evidence-Based Comparison

Success Rates
▪️ Multiple systematic reviews demonstrate that MTA shows superior clinical and radiographic success compared to formocresol
▪️ Long-term data indicate:
- MTA success ≈ 95%
- Formocresol success ≈ 80%
▪️ Meta-analyses confirm statistically significant better outcomes with MTA in primary molars

Radiographic Findings
▪️ FC associated with:
- Internal root resorption
- Pulp canal obliteration
▪️ MTA shows:
- More favorable healing patterns
- Less pathological resorption

Newer Materials
▪️ Recent randomized trials (2024) show NeoMTA and calcium silicate materials outperform FC in both clinical and radiographic success

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✅ Safety Profile: A Critical Issue

Formocresol
▪️ Contains formaldehyde, classified as a potential carcinogen
▪️ Demonstrates:
- Cytotoxicity to pulp and periapical tissues
- Systemic distribution after application
▪️ Safety concerns remain controversial but significant in modern practice

Modern Agents (MTA, Biodentine)
▪️ Highly biocompatible
▪️ Promote tissue regeneration rather than fixation
▪️ Minimal systemic risk

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💬 Discussion
The shift from formocresol to bioactive materials reflects a broader movement toward minimally invasive and biologically driven dentistry.
While FC still demonstrates acceptable short-term outcomes, its mechanism (tissue fixation and devitalization) contradicts current principles of vital pulp therapy, which emphasize preservation and regeneration.
Modern materials such as MTA and Biodentine not only achieve higher success rates but also align with biological healing processes, making them superior choices.

However, barriers remain:
▪️ Higher cost (especially MTA)
▪️ Technique sensitivity
▪️ Availability in low-resource settings

✍️ Conclusion
Formocresol is no longer the ideal pulpotomy agent in contemporary dentistry. Although it provides acceptable clinical outcomes, modern materials outperform it in both safety and long-term success.
MTA and other calcium silicate materials are currently the gold standard due to their:
▪️ Superior biocompatibility
▪️ Higher success rates
▪️ Regenerative potential

🎯 Clinical Recommendations
▪️ Prefer MTA or Biodentine for pulpotomy in primary teeth
▪️ Avoid routine use of formocresol, especially in pediatric patients
▪️ Consider ferric sulfate as an alternative where cost is a concern
▪️ Follow evidence-based guidelines (AAPD) for vital pulp therapy
▪️ Ensure proper case selection and coronal seal

📚 References

✔ Marghalani, A. A., Omar, S., & Chen, J. W. (2014). Clinical and radiographic success of mineral trioxide aggregate compared with formocresol as a pulpotomy treatment in primary molars: A systematic review and meta-analysis. Journal of the American Dental Association, 145(7), 714–721. https://doi.org/10.14219/jada.2014.36
✔ Ghajari, M. F., Mirkarimi, M., Vatanpour, M., & Kharrazi Fard, M. J. (2008). Comparison of pulpotomy with formocresol and MTA in primary molars: A systematic review and meta-analysis. Iranian Endodontic Journal, 3(3), 45–49.
✔ Wang, Y., Luo, S., Tang, W., Yang, L., Liao, Y., & Liu, F. (2022). Efficacy and safety of mineral trioxide aggregate pulpotomy for caries-exposed permanent teeth in children: A systematic review and meta-analysis. Translational Pediatrics, 11(4), 537–546. https://doi.org/10.21037/tp-22-68
✔ Gisour, E. F., Jahanimoghadam, F., & Karimipour, P. (2024). Clinical and radiographic comparison of primary molar pulpotomy using formocresol, Portland cement, and NeoMTA plus: A randomized controlled clinical trial. Scientific Reports, 14, 29690. https://doi.org/10.1038/s41598-024-81180-w
✔ Holan, G., & Fuks, A. B. (2013). A comparison of pulpotomy using formocresol and ferric sulfate. Pediatric Dentistry. (Referenced in systematic reviews)

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Iodoform-Calcium Hydroxide Pastes vs CTZ in Pediatric Dentistry

Iodoform-calcium hydroxide pastes have gained attention as a potential alternative to CTZ paste in pediatric endodontics. While CTZ (chloramphenicol, tetracycline, zinc oxide-eugenol) has demonstrated clinical success, concerns regarding antibiotic resistance, cytotoxicity, and regulatory restrictions have prompted the search for safer substitutes.

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This article critically evaluates the benefits, risks, and clinical performance of iodoform-calcium hydroxide formulations compared to CTZ.

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✅ Introduction
The management of infected primary teeth often relies on obturation materials with antimicrobial properties and biocompatibility. CTZ paste has been widely used due to its broad-spectrum antibacterial action, but its composition—particularly chloramphenicol—raises safety concerns.
In contrast, iodoform-calcium hydroxide pastes (e.g., Vitapex®, Metapex®) have emerged as promising alternatives due to their resorbability and favorable biological profile. This article explores whether these materials can effectively replace CTZ in clinical practice.

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✅ Material Composition and Mechanism of Action

CTZ Paste
▪️ Components: Chloramphenicol, tetracycline, zinc oxide-eugenol
▪️ Mechanism: Broad-spectrum antibacterial effect via protein synthesis inhibition
▪️ Limitation: Potential systemic toxicity and antibiotic resistance

Iodoform-Calcium Hydroxide Pastes
▪️ Components: Calcium hydroxide, iodoform, silicone oil (vehicle)
▪️ Mechanism:
₀ High pH (≈12.5) → antimicrobial activity
₀ Iodoform → sustained antiseptic effect
▪️ Advantage: Promotes periapical healing and physiological root resorption

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✅ Clinical Indications and Applications

Iodoform-calcium hydroxide pastes are indicated for:
▪️ Pulpectomy in primary teeth
▪️ Teeth with periapical lesions
▪️ Cases requiring resorbable obturation materials

CTZ is typically used in:
▪️ Non-instrumentation endodontic techniques
▪️ Situations with limited clinical time or patient cooperation

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✅ Benefits of Iodoform-Calcium Hydroxide Pastes
▪️ Superior biocompatibility compared to antibiotic-based pastes
▪️ Resorbability synchronized with primary root resorption
▪️ Reduced risk of systemic adverse effects
▪️ Lower contribution to antimicrobial resistance
▪️ Radiopacity and ease of placement

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✅ Risks and Limitations
▪️ Potential over-resorption before complete root resorption
▪️ Lower immediate antibacterial potency compared to CTZ
▪️ Risk of extrusion beyond apex, although generally well tolerated
▪️ Possible discoloration due to iodoform content

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Dental Article 🔽 Pulpotomy vs. Pulpectomy in Primary Teeth: A Contemporary Clinical Guide ... Understanding the clinical indications, long-term outcomes, advantages, and limitations of each technique is essential for optimizing patient care and maintaining primary teeth until exfoliation.

💬 Discussion
The replacement of CTZ with iodoform-calcium hydroxide pastes reflects a broader shift toward biologically acceptable and antibiotic-free materials. Although CTZ demonstrates strong antimicrobial efficacy, its reliance on broad-spectrum antibiotics is increasingly problematic in modern clinical practice.
Evidence suggests that calcium hydroxide-based pastes provide adequate disinfection while supporting tissue repair and regeneration. However, their clinical success depends on proper case selection and technique, especially in teeth with extensive infection.
Furthermore, the resorbable nature of iodoform-calcium hydroxide pastes aligns well with the physiology of primary dentition, reducing the risk of interference with permanent tooth eruption.

✍️ Conclusion
Iodoform-calcium hydroxide pastes represent a viable and safer alternative to CTZ, particularly in pediatric patients. Although they may exhibit slightly reduced immediate antibacterial activity, their superior biocompatibility, physiological resorbability, and lower systemic risk profile support their preference in most clinical scenarios.

🎯 Clinical Recommendations
▪️ Prefer iodoform-calcium hydroxide pastes in routine pulpectomies
▪️ Reserve CTZ for specific cases where rapid disinfection is critical
▪️ Avoid CTZ in patients with antibiotic sensitivity or systemic risk factors
▪️ Ensure accurate obturation technique to prevent extrusion
▪️ Monitor treated teeth radiographically for resorption patterns

Parameter	Iodoform-Calcium Hydroxide Pastes	CTZ Paste
Composition	Calcium hydroxide + iodoform	Chloramphenicol + tetracycline + ZOE
Antimicrobial Action	High pH + antiseptic effect	Broad-spectrum antibiotic effect
Biocompatibility	High	Moderate to low
Resorbability	Physiological, synchronized with roots	Limited or unpredictable
Systemic Risk	Low	Higher (antibiotic-related)
Clinical Indication	Pulpectomy in primary teeth	Non-instrumentation techniques

📚 References

✔ American Academy of Pediatric Dentistry. (2023). Guideline on pulp therapy for primary and immature permanent teeth. Pediatric Dentistry, 45(6), 384–392.
✔ Coll, J. A., Vargas, K., Marghalani, A. A., Chen, C. Y., & AlShamali, S. (2020). A systematic review and meta-analysis of nonvital pulp therapy for primary teeth. Pediatric Dentistry, 42(4), 256–261.
✔ Siqueira, J. F., & Rôças, I. N. (2019). Present status and future directions in endodontic microbiology. Endodontic Topics, 38(1), 3–23. https://doi.org/10.1111/etp.12264
✔ Subramaniam, P., Konde, S., Mandanna, D. K. (2011). Clinical and radiographic evaluation of metapex in pulpectomy of primary teeth. Journal of Indian Society of Pedodontics and Preventive Dentistry, 29(3), 233–238. https://doi.org/10.4103/0970-4388.85818
✔ Trairatvorakul, C., & Chunlasikaiwan, S. (2008). Success of pulpectomy with zinc oxide-eugenol vs iodoform paste in primary molars: A clinical study. International Journal of Paediatric Dentistry, 18(3), 169–177. https://doi.org/10.1111/j.1365-263X.2007.00914.x

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