Accurate diagnosis of pulpitis in primary teeth is essential for selecting appropriate pulp therapy and preserving primary teeth until their normal exfoliation.
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The current approach emphasizes integrating clinical findings, symptoms, radiographic assessment, caries depth, restorability, and intraoperative pulp status rather than relying on a single diagnostic test.
The 2026–2027 American Academy of Pediatric Dentistry (AAPD) best practice recognizes vital pulp therapy for primary teeth with normal pulp or reversible pulpitis, while also acknowledging that complete pulpotomy may be considered in selected primary teeth diagnosed with irreversible pulpitis when clinical and radiographic infection is absent.
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| Feature | Reversible Pulpitis | Irreversible Pulpitis |
|---|---|---|
| Pain | Provoked, short-lasting | Spontaneous or persistent pain may occur |
| Thermal response | Brief | Prolonged or poorly localized |
| Pain after stimulus | Resolves rapidly | May persist after stimulus removal |
| Percussion | Usually negative | May become positive if apical tissues are involved |
| Radiographic findings | Usually no pathologic periapical changes | May show furcation or periapical pathology in advanced disease |
| Pulp status | Inflamed but potentially recoverable | Historically considered incapable of returning to normal |
| Primary treatment approach | Vital pulp therapy | Pulpectomy, or selected pulpotomy cases under contemporary protocols |
Diagnosis should begin with a structured assessment of:
▪️ Pain history: spontaneous pain, provoked pain, duration, frequency, and nocturnal symptoms.
▪️ Clinical examination: caries extent, restoration integrity, swelling, sinus tract, mobility, and tenderness to percussion or palpation.
▪️ Radiographic examination: furcation or periapical radiolucency, pathologic root resorption, and relationship between the carious lesion and pulp.
▪️ Pulp exposure: if treatment requires caries removal and pulp exposure, the appearance of the tissue and ability to achieve hemostasis provide important intraoperative information.
Sensibility tests should be interpreted cautiously in primary teeth because responses can be inconsistent and difficult to quantify.
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When the pulp is considered vital and reversibly inflamed, treatment should prioritize preservation of healthy pulp tissue.
Depending on lesion depth and the clinical situation, treatment options include:
▪️ Indirect pulp treatment (IPT)
▪️ Protective liner when indicated
▪️ Direct pulp capping in selected cases
▪️ Pulpotomy when indicated
The AAPD currently classifies these approaches as vital pulp therapies for primary teeth with normal pulp or reversible pulpitis.
A durable coronal seal is fundamental because persistent bacterial leakage can compromise pulp healing regardless of the pulp therapy selected.
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Traditionally, irreversible pulpitis in primary teeth has been managed with pulpectomy when the tooth is restorable and appropriate for retention. However, contemporary evidence is challenging the assumption that every primary tooth with clinical signs of irreversible pulpitis necessarily requires complete removal of the radicular pulp.
The 2026 AAPD guidance states that complete pulpotomy may be considered in selected primary teeth with signs of irreversible pulpitis when clinical and radiographic signs of infection are absent.
A 2026 systematic review and meta-analysis comparing pulpotomy and pulpectomy found no statistically significant difference in clinical or radiographic success at up to 12 months in selected primary teeth with irreversible pulpitis and without swelling or radiographic evidence of periapical infection. However, the authors emphasized that the certainty of evidence was very low, and heterogeneity between studies was substantial.
Therefore, pulpotomy should not be interpreted as a universal replacement for pulpectomy. Case selection remains critical.
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Dental Article 🔽 Management of Pulpal Infections in Primary Teeth: Evidence-Based Protocols ... The 2024 American Academy of Pediatric Dentistry (AAPD) guidelines emphasize accurate diagnosis, conservative pulp therapy, and the use of bioactive materials such as MTA and Biodentine for improved long-term success (AAPD, 2024).💬 Discussion
The traditional distinction between reversible and irreversible pulpitis is becoming more biologically nuanced. Histologic inflammation within the pulp is not necessarily uniform; portions of the tissue may remain capable of healing even when clinical symptoms suggest advanced inflammation.
Recent evidence specifically involving primary teeth supports a more conservative approach in selected cases. A 2024 systematic review reported weighted overall pulpotomy success rates of 97.2% at 6 months and 94.4% at 12 months in primary teeth diagnosed with irreversible pulpitis.
More recently, a 2026 narrative review reported clinical success of pulpotomy ranging from 95–100% and radiographic success from 90–100% at 6 months to 1 year in the available clinical studies. Nevertheless, the authors emphasized the need for revised diagnostic criteria and stronger long-term evidence.
Consequently, irreversible pulpitis should not be diagnosed solely from pain characteristics. The presence or absence of swelling, sinus tract, pathologic radiographic changes, restorability, and intraoperative findings should influence treatment selection.
🎯 Clinical Recommendations
1. Do not diagnose irreversible pulpitis from pain alone. Combine symptoms with clinical and radiographic findings.
2. In primary teeth with normal pulp or reversible pulpitis, prioritize tissue-preserving vital pulp therapy when clinically appropriate.
3. For selected teeth with suspected irreversible pulpitis but no swelling, sinus tract, or radiographic evidence of infection, consider whether pulpotomy is appropriate before automatically selecting pulpectomy.
4. Failure to achieve predictable hemostasis, evidence of necrotic tissue, or clinical/radiographic infection should shift management toward treatment appropriate for a nonvital pulp.
5. Always evaluate restorability, remaining tooth life, and the importance of maintaining the primary tooth before selecting pulp therapy.
✍️ Conclusion
The distinction between reversible and irreversible pulpitis in primary teeth remains clinically relevant, but contemporary evidence supports a more conservative interpretation of irreversible inflammation. Reversible pulpitis generally favors vital pulp therapy, whereas irreversible pulpitis traditionally indicates pulpectomy. However, complete pulpotomy may be a viable option in carefully selected primary teeth without clinical or radiographic evidence of infection.
Current evidence is promising but still limited. Treatment decisions should therefore be based on comprehensive diagnosis, intraoperative assessment, restorability, and the biological objective of preserving the primary tooth whenever predictable treatment is possible.
📚 References
✔ American Academy of Pediatric Dentistry. (2026). Pulp therapy for primary and immature permanent teeth: Indications and objectives. In The reference manual of pediatric dentistry, 2026–2027. American Academy of Pediatric Dentistry.
✔ Chawla, S., Singhal, R., Namdev, R., Kumar, A., Chhanna, K., & Kumari, C. (2026). Effectiveness of pulpotomy compared with pulpectomy for irreversible pulpitis in primary teeth: A systematic review and meta-analysis. Journal of Dentistry, 166, 106329. https://doi.org/10.1016/j.jdent.2026.106329
✔ Lin, G. S. S., Chin, Y. J., Choong, R. S., Tarek Wafa, S. W. W. S., Dziaruddin, N., Baharin, F., & Ismail, A. F. (2024). Treatment outcomes of pulpotomy in primary teeth with irreversible pulpitis: A systematic review and meta-analysis. Children, 11(5), 574. https://doi.org/10.3390/children11050574
✔ Philip, N., Duggal, M., & Nazzal, H. (2026). Pulpotomy for treating primary teeth with irreversible pulpitis: A call for action. European Archives of Paediatric Dentistry. Advance online publication. https://doi.org/10.1007/s40368-026-01199-7
✔ Yong, D., & Cathro, P. (2021). Conservative pulp therapy in the management of reversible and irreversible pulpitis. Australian Dental Journal, 66(Suppl. 1), S4–S14. https://doi.org/10.1111/adj.12841
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