✅ Abstract
The evolution of pulp therapy in pediatric dentistry has shifted from traditional medicaments to bioactive biomaterials that promote regeneration and tissue healing. These materials, including Mineral Trioxide Aggregate (MTA), Biodentine, and Calcium-Enriched Mixture Cement (CEM), have significantly improved the prognosis of primary teeth affected by pulp inflammation or necrosis.
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✅ Introduction
In pediatric endodontics, maintaining pulp vitality or restoring periapical health after necrosis is essential for preserving the primary dentition until exfoliation. Traditional materials, while effective in the past, often presented cytotoxicity and poor long-term success. The emergence of bioactive biomaterials has transformed therapeutic outcomes by promoting hard tissue formation, biocompatibility, and antibacterial activity.
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Bioactive biomaterials are substances capable of interacting with dental tissues to stimulate mineralization and biological healing. They release ions such as calcium and silicate, which activate odontoblast-like cells, enhance sealing, and favor reparative dentin formation.
Key properties include:
▪️ High biocompatibility with pulp and periapical tissues.
▪️ Sealing ability preventing bacterial infiltration.
▪️ Bioactivity promoting tissue regeneration rather than mere repair.
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Dental Article 🔽 Mineral Trioxide Aggregate (MTA) in Pediatric Dentistry: Uses, Benefits, and Clinical Evidence ... Preserving primary teeth until their natural exfoliation is a key goal in pediatric dentistry. Advances in bioactive materials have made this more predictable.✅ Procedures and Techniques in Pulp Therapy
1. Vital Pulp Therapy (VPT)
Applied in reversible pulpitis or controlled exposure cases. Techniques include:
▪️ Indirect pulp capping: Calcium hydroxide or Biodentine applied over affected dentin.
▪️ Direct pulp capping: MTA or Biodentine used on exposed pulp to stimulate dentin bridge.
▪️ Partial pulpotomy: Removal of 1–3 mm of coronal pulp followed by calcium silicate cement coverage
2. Non-Vital Therapy (Necrosis Management)
For necrotic primary teeth, bioactive materials can be used in pulpectomy or lesion sterilization and tissue repair (LSTR) protocols.
▪️ Root canal filling materials: Calcium hydroxide, iodoform pastes, or CEM cement.
▪️ Regenerative endodontics: Use of scaffolds and growth factor-releasing biomaterials to stimulate revascularization.
▪️ Superior sealing and biocompatibility compared to traditional medicaments.
▪️ Reduced inflammation and resorption in primary teeth.
▪️ High success rates (>90%) in pulpotomy and apexification cases.
▪️ Simplified handling and improved mechanical strength.
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▪️ High cost and limited availability in certain regions.
▪️ Technique sensitivity and strict moisture control requirements.
▪️ Some materials (e.g., MTA) may cause tooth discoloration.
📊 Comparative Table: Traditional vs. Modern Bioactive Materials in Pediatric Pulp Therapy
| Aspect | Traditional Materials | Bioactive Materials |
|---|---|---|
| Composition | Formocresol, Zinc Oxide-Eugenol, Calcium Hydroxide | MTA, Biodentine, CEM Cement, TheraCal LC |
| Mechanism of Action | Fixative or bactericidal effect; limited tissue regeneration | Ion release induces dentinogenesis and biological healing |
| Clinical Success Rate | 60–80% (variable over time) | 90–98% in long-term studies |
| Biocompatibility | Cytotoxic; potential for inflammatory response | Excellent; promotes cell differentiation and healing |
| Limitations | Discoloration, cytotoxicity, limited regeneration | Cost, handling sensitivity, setting time variability |
✍️ Conclusion
The use of bioactive biomaterials has revolutionized pediatric pulp therapy and necrosis management, providing biologically driven, long-lasting outcomes. Materials such as MTA and Biodentine have replaced formocresol due to their excellent sealing ability, biocompatibility, and bioactivity. Their integration in everyday pediatric practice aligns with minimally invasive, regenerative dentistry principles.
✅ Clinical Recommendations
▪️ Prefer bioactive materials (MTA, Biodentine) over formocresol in vital pulp therapy.
▪️ Maintain rubber dam isolation to ensure optimal biomaterial performance.
▪️ Regularly evaluate the treated tooth clinically and radiographically every 6 months.
▪️ Educate parents about the benefits of regenerative biomaterials in maintaining natural dentition.
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✔ Coll, J. A., Dhar, V., Vargas, K., Chen, C. Y., & American Academy of Pediatric Dentistry. (2023). Use of vital pulp therapies in primary teeth with deep caries lesions. Pediatric Dentistry, 45(5), 349–371. https://www.aapd.org/media/Policies_Guidelines/E_VPT.pdf
✔ Elshazly, T. M., Saber, S. E. D. M., & El-Khodary, M. M. (2024). Clinical performance of calcium silicate-based biomaterials in pulpotomy of primary molars: A systematic review and meta-analysis. International Journal of Paediatric Dentistry, 34(2), 155–169. https://doi.org/10.1111/ipd.13329
✔ Zhou, H., Du, Q., & Wu, Q. (2023). Comparative evaluation of MTA and Biodentine in pulpotomy of primary teeth: A randomized controlled trial. Clinical Oral Investigations, 27(4), 1783–1791. https://doi.org/10.1007/s00784-022-04765-8
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