Modern Alternatives to Calcium Hydroxide Apexification

Management of immature permanent teeth with necrotic pulp has historically relied on calcium hydroxide apexification. However, advances in biomaterials and regenerative biology have significantly changed clinical decision-making.

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Today, regenerative endodontic procedures (REPs) and mineral trioxide aggregate (MTA) apical barriers are increasingly preferred due to their predictable outcomes, reduced treatment time, and superior biological response.

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✅ Traditional Calcium Hydroxide Apexification: Limitations
Calcium hydroxide apexification aims to induce the formation of a calcified apical barrier over several months. Despite its historical importance, multiple disadvantages have been documented:

▪️ Prolonged treatment time, often exceeding 6–18 months
▪️ Increased risk of root fracture due to long-term dentin exposure
▪️ Multiple patient visits, compromising compliance
▪️ Unpredictable apical closure morphology
Long-term calcium hydroxide use weakens radicular dentin, increasing susceptibility to cervical fractures.

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✅ MTA Apical Barriers: A More Predictable Alternative
The introduction of MTA revolutionized apexification by allowing immediate apical barrier formation in one or two visits.

Key advantages include:
▪️ Excellent biocompatibility and bioactivity
▪️ Superior sealing ability
▪️ Reduced treatment duration
▪️ High clinical success rates
MTA apical barriers provide a reliable artificial stop, enabling effective obturation without prolonged intracanal medication.

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✅ Regenerative Endodontics: A Paradigm Shift
Regenerative endodontic procedures aim to restore pulp vitality and promote continued root development, rather than simply closing the apex.

Clinical benefits include:
▪️ Increase in root length and dentin thickness
▪️ Improved fracture resistance
▪️ Potential revascularization of the pulp space
Regenerative endodontics aligns with modern minimally invasive and biologically driven dentistry, especially in young patients.

📊 Comparative Table: Properties of Mineral Trioxide Aggregate (MTA)

Aspect	Advantages	Limitations
Biocompatibility	Excellent tissue tolerance and minimal inflammatory response	May cause mild initial inflammation during setting
Sealing ability	Superior marginal seal even in moist environments	Technique-sensitive placement
Bioactivity	Stimulates hard tissue formation and cementogenesis	Long setting time compared to newer bioceramics
Clinical longevity	High long-term success rates in apexification and perforation repair	Higher cost than traditional materials

💬 Discussion
While calcium hydroxide apexification remains a viable option in selected cases, current evidence strongly favors MTA apical barriers and regenerative techniques. MTA provides predictable outcomes when root development cannot be restored, whereas regenerative endodontics offers true tissue healing and maturation when biological conditions allow.
Case selection, clinician expertise, and patient age play critical roles in choosing the appropriate modality.

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✍️ Conclusion
Traditional calcium hydroxide apexification is being replaced due to its biological limitations and mechanical risks. MTA apical barriers and regenerative endodontics represent evidence-based, modern alternatives that improve clinical outcomes, reduce treatment time, and preserve tooth structure.

🎯 Clinical Recommendations
▪️ Prefer regenerative endodontics in immature teeth with favorable apical anatomy
▪️ Use MTA apical barriers when regeneration is not feasible
▪️ Limit long-term calcium hydroxide use due to fracture risk
▪️ Base treatment decisions on radiographic findings, patient age, and compliance

📚 References

✔ American Association of Endodontists. (2016). Clinical considerations for a regenerative procedure. Journal of Endodontics, 42(3), 505–513. https://doi.org/10.1016/j.joen.2016.01.017
✔ Banchs, F., & Trope, M. (2004). Revascularization of immature permanent teeth with apical periodontitis. Journal of Endodontics, 30(4), 196–200. https://doi.org/10.1097/00004770-200404000-00003
✔ Torabinejad, M., & Parirokh, M. (2010). Mineral trioxide aggregate: A comprehensive literature review—Part II. Journal of Endodontics, 36(2), 190–202. https://doi.org/10.1016/j.joen.2009.09.010
✔ Andreasen, J. O., Farik, B., & Munksgaard, E. C. (2002). Long-term calcium hydroxide as a root canal dressing may increase risk of root fracture. Dental Traumatology, 18(3), 134–137. https://doi.org/10.1034/j.1600-9657.2002.00097.x

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Open Apex Management in Traumatized Teeth: Latest Evidence-Based Recommendations

Dental trauma frequently affects immature permanent teeth, particularly in children and adolescents. When trauma occurs before complete root development, it often results in teeth with open apices, posing significant clinical challenges.

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Open apex management in traumatized teeth aims to control infection, preserve tooth structure, and promote continued root development or apical closure using evidence-based techniques.

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✅ Understanding Open Apex in Traumatized Teeth
An open apex is characterized by:

▪️ Incomplete root formation
▪️ Thin dentinal walls
▪️ Wide apical foramen

Traumatic injuries such as luxation, avulsion, or complicated crown fractures may compromise pulpal vitality, interrupting root development and increasing the risk of infection and fracture.
Early and accurate diagnosis is critical to determine prognosis and select the most appropriate therapeutic approach.

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✅ Diagnostic Considerations
Key diagnostic factors include:

▪️ Type and severity of trauma
▪️ Pulp vitality status
▪️ Stage of root development
▪️ Presence of infection or apical pathology

Radiographic evaluation (periapical radiographs or CBCT when indicated) is essential to assess root length, apical diameter, and periapical status.

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✅ Evidence-Based Treatment Options

➤ Apexification
Apexification is indicated for non-vital immature teeth and aims to create an apical barrier to allow obturation.
Calcium hydroxide (traditional method)
Mineral trioxide aggregate (MTA) or bioceramic materials (modern approach)
Bioceramic apexification has largely replaced long-term calcium hydroxide due to improved outcomes and reduced treatment time.

➤ Regenerative Endodontic Procedures (REPs)
Regenerative endodontics is currently the preferred approach for many immature teeth with necrotic pulps. Benefits include:
▪️ Continued root maturation
▪️ Increased dentinal wall thickness
▪️ Improved fracture resistance
This approach is supported by AAPD and IADT guidelines, particularly in young patients.

➤ Vital Pulp Therapy in Traumatized Teeth
In cases of reversible pulp damage, procedures such as:
▪️ Partial pulpotomy (Cvek pulpotomy)
▪️ Direct pulp capping
may allow continued root development (apexogenesis) when performed promptly.

📊 Comparative Table: Evidence-Based Management Options for Open Apex Teeth

Aspect	Advantages	Limitations
Calcium Hydroxide Apexification	Long history of use, induces apical hard tissue barrier	Long treatment time, increased fracture risk, multiple visits
MTA / Bioceramic Apexification	Shorter treatment time, predictable apical seal, biocompatible	No continued root development, higher material cost
Regenerative Endodontic Procedures	Promotes root maturation and dentinal thickening	Technique-sensitive, variable outcomes
Vital Pulp Therapy	Preserves pulp vitality and allows apexogenesis	Limited to cases with minimal pulpal inflammation

💬 Discussion
Recent evidence supports a paradigm shift toward biologically based therapies, particularly regenerative endodontics, for immature teeth with necrotic pulps. While apexification remains a valid option, it does not promote continued root development, which is critical for long-term tooth survival.
Case selection, patient compliance, and clinician expertise remain decisive factors in treatment success.

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🎯 Clinical Recommendations
▪️ Prioritize pulp vitality preservation whenever possible
▪️ Consider regenerative endodontic procedures as first-line therapy for necrotic immature teeth
▪️ Use bioceramic materials for apexification when regeneration is not feasible
▪️ Ensure long-term follow-up to monitor root development and periapical healing
▪️ Follow IADT and AAPD trauma guidelines strictly

✍️ Conclusion
Management of traumatized teeth with open apices requires an evidence-based, individualized approach. Advances in regenerative endodontics and bioceramic materials have significantly improved clinical outcomes. Early intervention, accurate diagnosis, and adherence to current guidelines are essential to ensure functional and long-lasting results.

📚 References

✔ American Academy of Pediatric Dentistry. (2023). Pulp therapy for primary and immature permanent teeth. The Reference Manual of Pediatric Dentistry.
✔ Diogenes, A., Henry, M. A., Teixeira, F. B., & Hargreaves, K. M. (2013). An update on clinical regenerative endodontics. Endodontic Topics, 28(1), 2–23.
✔ Fouad, A. F., Abbott, P. V., Tsilingaridis, G., et al. (2020). International Association of Dental Traumatology guidelines for the management of traumatic dental injuries. Dental Traumatology, 36(4), 314–330.
✔ Torabinejad, M., & Parirokh, M. (2010). Mineral trioxide aggregate: A comprehensive literature review. Journal of Endodontics, 36(1), 16–27.
✔ American Association of Endodontists. (2021). Clinical considerations for regenerative procedures.

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Complete Guide to Pulp Therapy in Primary Teeth: Materials, Techniques, and Success Rates

Pulp therapy in primary teeth is a cornerstone of pediatric dentistry, aiming to maintain tooth vitality, prevent infection, and preserve arch space until natural exfoliation.

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Advances in biomaterials such as MTA, Biodentine, and improved clinical protocols have significantly increased success rates. Understanding the differences between pulpotomy, pulpectomy, indirect pulp treatment (IPT), and apexification is essential for evidence-based care.

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✅ Pulp Therapy Techniques

➤ Indirect Pulp Treatment (IPT)
IPT is indicated when deep caries is present but the tooth remains vital and asymptomatic. Selective caries removal minimizes pulp exposure and promotes remineralization. High-fluoride glass ionomer and resin-modified glass ionomer (RMGI) are widely used as liners.

➤ Direct Pulp Cap (DPC)
Used when a small mechanical pulp exposure occurs. Bioceramics like MTA and Biodentine create a durable dentin bridge and exhibit excellent biocompatibility.

➤ Pulpotomy
Indicated in cases of carious pulp exposure with preserved radicular pulp vitality. Popular medicaments include MTA, Biodentine, and historically formocresol, although the latter is no longer recommended due to toxicity concerns.

➤ Pulpectomy
Indicated for irreversible pulpitis or necrosis. It consists of removing necrotic tissue and obturating canals with resorbable materials such as iodoform-based pastes (Vitapex, Metapex) or zinc oxide–eugenol.

➤ Apexogenesis & Apexification in Young Permanent Teeth
Although not used in primary teeth, they are fundamental when treating immature permanent teeth with open apices.

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✅ Materials Used in Pulp Therapy

➤ Mineral Trioxide Aggregate (MTA)
Known for high biocompatibility, antibacterial properties, and superior long-term sealing.

➤ Biodentine
A bioactive dentin substitute with faster setting time and strong pulpal healing potential.

➤ Zinc Oxide–Eugenol (ZOE)
Traditional obturation material for primary teeth, but less favorable in cases requiring complete resorption.

➤ Iodoform-based Pastes (Vitapex/Metapex)
Preferred for pulpectomy due to their resorbability and antimicrobial action.

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✅ Success Rates

▪️ IPT: 90–97% (AAPD, 2021)
▪️ Pulpotomy with MTA: 90–95%
▪️ Pulpotomy with Biodentine: 88–94%
▪️ Pulpectomy: 70–85%, depending on canal anatomy and material used

📊 Comparative Table: Differences Between Pulp Therapy Techniques

Aspect	Advantages	Limitations
Indirect Pulp Treatment (IPT)	High success rates; preserves vitality; minimally invasive	Requires excellent diagnosis; risk of residual caries
Direct Pulp Cap (DPC)	Promotes dentin bridge formation; effective with bioceramics	Not suitable for carious exposures; requires ideal isolation
Pulpotomy	High success with MTA/Biodentine; preserves radicular pulp vitality	Failure if radicular pulp is inflamed or infected
Pulpectomy	Indicated for necrotic teeth; removes infection; allows tooth preservation	Technique sensitive; lower success rates; requires resorbable obturants
Apexogenesis	Allows continued root development	Not applicable to primary teeth
Apexification	Induces apical closure in young permanent teeth	Long treatment time; not used in primary teeth

💬 Discussion
The choice of pulp therapy depends on diagnosis, degree of inflammation, tooth restorability, and patient behavior. Vital pulp therapies (IPT, DPC, pulpotomy) consistently show higher long-term success than pulpectomy. Modern biomaterials like MTA and Biodentine have replaced older agents due to improved healing outcomes and safety profiles.

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🔎 Recommendations
▪️ Prioritize vital pulp therapies when pulp vitality is preserved.
▪️ Use bioceramics (MTA, Biodentine) as first-line agents.
▪️ Perform pulpectomy only when irreversible pulpitis or necrosis is confirmed.
▪️ Seal treated teeth with stainless steel crowns for long-term success.
▪️ Follow AAPD guidelines for diagnostic criteria and material selection.

✍️ Conclusion
Pulp therapy in primary teeth is highly successful when clinicians use accurate diagnostic criteria and evidence-based materials. Modern biomaterials have improved outcomes and reduced complications, making pulp conservation the preferred approach whenever possible. A clear understanding of each technique ensures predictable and biologically sound results.

📚 References

✔ American Academy of Pediatric Dentistry. (2021). Pulp therapy for primary and immature permanent teeth. AAPD Clinical Guidelines. https://www.aapd.org
✔ Hegde, S., & Bhat, S. S. (2019). Clinical evaluation of MTA and Biodentine as pulpotomy agents in primary teeth. Journal of Indian Society of Pedodontics and Preventive Dentistry, 37(3), 307–315. https://doi.org/10.4103/JISPPD.JISPPD_217_18
✔ Jeon, H. J., Kim, J., & Kim, Y. (2020). Outcomes of vital pulp therapy using bioceramic materials. Restorative Dentistry & Endodontics, 45(3), e32. https://doi.org/10.5395/rde.2020.45.e32
✔ Nowicka, A., Lipski, M., Parafiniuk, M., et al. (2013). Biodentine vs. MTA in direct pulp capping. Journal of Endodontics, 39(6), 743–747. https://doi.org/10.1016/j.joen.2013.01.005

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