Apexogenesis with MTA: Indications, Clinical Protocol, and Evidence-Based Technique

Apexogenesis is a vital pulp therapy aimed at maintaining pulp vitality to allow continued root development in immature permanent teeth. Mineral trioxide aggregate (MTA) has emerged as a gold-standard biomaterial due to its superior biocompatibility and sealing ability.

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Video 🔽 Apexogenesis: Step by step procedure ... Apexogenesis is performed on immature teeth with open apices that are affected by caries, trauma, or fractures with pulp exposure.

This article reviews indications, clinical technique, advantages, and limitations of apexogenesis with MTA, supported by current scientific evidence.

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✅ Introduction
Apexogenesis refers to the physiological continuation of root development and apical closure in immature permanent teeth with vital pulp tissue. The preservation of pulp vitality is essential for achieving adequate root length and dentinal wall thickness.
Historically, calcium hydroxide was widely used; however, MTA has gained preference due to improved outcomes, including enhanced dentin bridge formation and superior sealing properties.

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✅ Indications for Apexogenesis with MTA
Apexogenesis using MTA is indicated under the following clinical conditions:

▪️ Immature permanent teeth with open apices
▪️ Vital pulp tissue without signs of necrosis
▪️ Reversible pulpitis or minimal inflammation
▪️ Pulp exposure due to trauma or caries (recent exposure)
▪️ Absence of periapical pathology
These criteria are essential to ensure the success of vital pulp therapy and continued root maturation.

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✅ Biological Properties of MTA
MTA is widely used due to its favorable biological characteristics:

▪️ High biocompatibility
▪️ Ability to stimulate hard tissue (dentin bridge) formation
▪️ Excellent sealing capacity
▪️ Alkaline pH promoting antimicrobial activity
Additionally, MTA has been associated with reduced pulpal inflammation and improved healing outcomes compared to traditional materials.

✅ Clinical Technique (Step-by-Step Protocol)

1. Diagnosis and Case Selection
▪️ Clinical and radiographic evaluation
▪️ Confirmation of pulp vitality
▪️ Assessment of root development stage

2. Anesthesia and Isolation
▪️ Local anesthesia
▪️ Rubber dam isolation to ensure asepsis

3. Caries Removal and Access
▪️ Conservative removal of infected dentin
▪️ Exposure of pulp tissue under sterile conditions

4. Pulpotomy Procedure
▪️ Partial (Cvek) or full pulpotomy depending on inflammation
▪️ Hemostasis achieved using sterile saline or NaOCl

5. Placement of MTA
▪️ MTA is placed directly over the pulp tissue
▪️ A thickness of approximately 2–4 mm is recommended
▪️ Moist cotton pellet placed to allow proper setting

6. Temporary Restoration
▪️ Placement of a temporary restoration
▪️ Final restoration performed after MTA setting

7. Follow-Up
▪️ Clinical and radiographic monitoring at 3, 6, and 12 months
▪️ Evaluation of:
° Continued root development
° Apical closure
° Absence of pathology

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✅ Clinical Outcomes and Success Rates
Studies report high success rates (up to 96%) in posterior teeth treated with MTA apexogenesis.

Favorable outcomes include:
▪️ Continued root elongation
▪️ Thickening of dentinal walls
▪️ Apical closure
▪️ Absence of symptoms or pathology

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💬 Discussion
MTA has significantly improved the prognosis of apexogenesis compared to calcium hydroxide. Its ability to induce predictable dentin bridge formation and maintain pulp vitality makes it a preferred material in pediatric and adolescent patients.
However, limitations persist:
▪️ Long setting time
▪️ Potential tooth discoloration
▪️ Higher cost
▪️ Handling difficulties
Despite these drawbacks, current evidence suggests that MTA provides comparable or superior outcomes to other pulpotomy agents, although further high-quality randomized trials are needed.

✍️ Conclusion
Apexogenesis with MTA represents a reliable and evidence-based approach for managing immature permanent teeth with vital pulp. The procedure allows for continued root development, improved structural integrity, and long-term tooth preservation, making it a cornerstone in modern pediatric endodontics.

🎯 Recommendations
▪️ Perform early diagnosis and intervention to preserve pulp vitality
▪️ Use rubber dam isolation to ensure aseptic conditions
▪️ Prefer partial pulpotomy when feasible to preserve more pulp tissue
▪️ Ensure long-term follow-up to monitor root development
▪️ Consider alternative materials (e.g., biodentine) when esthetics are critical

📚 References

✔ Ageel, B. M., El Meligy, O. A., & Quqandi, S. M. (2023). Mineral trioxide aggregate apexogenesis: A systematic review. Journal of Pharmacy and Bioallied Sciences, 15(Suppl 1), S11–S17. https://doi.org/10.4103/jpbs.jpbs_530_22
✔ Mousivand, S., Sheikhnezami, M., Moradi, S., Koohestanian, N., & Jafarzadeh, H. (2022). Evaluation of the outcome of apexogenesis in traumatised anterior and carious posterior teeth using mineral trioxide aggregate: A 5-year retrospective study. Australian Endodontic Journal, 48(3). https://doi.org/10.1111/aej.12583
✔ Corbella, S., Ferrara, G., El Kabbaney, A., & Taschieri, S. (2014). Apexification, apexogenesis and regenerative endodontic procedures: A review of the literature. Minerva Stomatologica, 63(11–12), 375–389.
✔ Yahya, A. A., & Alkhatib, A. R. (2024). Treatment modalities of apexogenesis: An overview. Al-Rafidain Dental Journal, 24(2), 453–466.

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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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Apexogénesis con MTA. Ventajas, procedimiento y reporte de caso

La apexogénesis es un tratamiento que se realiza en piezas dentales cuya pulpa se encuentra comprometida por caries o por un trauma y no han terminado su desarrollo radicular y cierre apical.

Este procedimiento se realiza en dientes permanentes jóvenes y utiliza materiales dentales que fomentan el desarrollo de las raíces, con el objetivo de mantener el diente permanente en boca.

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Compartimos un artículo que nos explica cuales son los beneficios del uso del MTA en las apexogénesis, reportando el procedimiento paso a paso a propósito de un caso.

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Callejas Ospina A, Jaramillo Builes WA. Apexogénesis de un molar inferior permanente joven con mta. Revista Nacional de Odontología. 2013; 9(16): 93-97.

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Apexogenesis: Step by step procedure

Apexogenesis is a dental treatment that is performed on immature and vital permanent teeth. The objective of this treatment is to allow root growth and apical closure of the tooth.

Apexogenesis is performed on immature teeth with open apices that are affected by caries, trauma, or fractures with pulp exposure. Follow-up and clinical controls are recommended.

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We share a video that explains everything about apexogenesis: definition, indications, contraindications and the step-by-step procedure.

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What is the difference between apexogenesis and apexification?

It is known as an immature tooth, that tooth that has an open apex and is discovered by an X-ray. When this happens, conventional endodontic procedures are of no value.

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The apex opening is usually very large in an immature tooth, and the canal walls are very thin, so appropriate treatment must be performed.

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In the presence of an open apex, apexogenesis (apicoformation) or apexification can be used. Both treatments have differences that will be resolved with the video that we show below.

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