Pediatric oncology dental management requires close coordination between the pediatric dentist, oncology team, child, and caregivers. Chemotherapy, hematopoietic cell transplantation (HCT), radiotherapy, and newer antineoplastic therapies can produce significant oral complications, while pre-existing caries, periodontal inflammation, or odontogenic infection may become clinically important during periods of immunosuppression.
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Current evidence also demonstrates that childhood cancer therapy may be associated with enamel defects, microdontia, tooth agenesis, altered root development, caries, and salivary dysfunction.
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Whenever clinically feasible, a comprehensive dental examination should be completed before initiation of chemotherapy, HCT, or radiotherapy. The assessment should include:
▪️ Medical and oncology history, including diagnosis and planned treatment. ▪️ Clinical examination of teeth, periodontium, mucosa, and oral hygiene. ▪️ Identification of active caries and odontogenic infection. ▪️ Assessment of teeth with poor prognosis or significant periapical/periodontal pathology. ▪️ Appropriate radiographs when they will influence treatment decisions. ▪️ Evaluation of oral habits, diet, fluoride exposure, and the child's ability to maintain oral hygiene.
The principal objective is to stabilize oral disease before immunosuppression whenever the oncology schedule permits. Contemporary MASCC/ISOO guidance emphasizes comprehensive dental assessment and treatment before cancer therapy to reduce oral infection, pain, trauma, and potential systemic complications.
2. Dental Priorities During Oncology Treatment
Once antineoplastic treatment has begun, dental care should be individualized according to the child's hematologic status, treatment phase, oral findings, and oncology protocol.
📊 Dental Priorities During Oncology Treatment
| Clinical Situation | Dental Approach |
|---|---|
| No acute oral disease | Maintain preventive care, oral hygiene, fluoride measures, and regular monitoring. |
| Active oral mucositis | Maintain gentle oral care, minimize mucosal trauma, and coordinate appropriate symptom and pain management. |
| Dental or odontogenic infection | Promptly assess the source of infection and coordinate treatment with the pediatric oncology team. |
| Neutropenia or thrombocytopenia | Review current hematologic status and consult the oncology team before invasive dental procedures. |
| Severe oral pain or inability to eat | Perform prompt evaluation and coordinate pain control and supportive management with the medical team. |
| Xerostomia or hyposalivation | Intensify caries prevention, encourage appropriate hydration, and address salivary dysfunction when clinically indicated. |
| Hematopoietic stem cell transplantation preparation | Complete necessary dental treatment before significant immunosuppression whenever the medical timeline permits; defer elective care during immunologic recovery. |
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Oral mucositis is one of the most clinically relevant acute complications of cancer therapy. Pediatric studies report substantial variability in incidence, and chemotherapy intensity is an important risk factor.
A basic oral-care protocol should include:
▪️ Gentle toothbrushing with a soft toothbrush, as tolerated.
▪️ Regular oral assessment.
▪️ Maintenance of adequate oral cleanliness.
▪️ Bland rinses when appropriate and tolerated.
▪️ Avoidance of alcohol-containing or irritating oral products.
▪️ Adequate pain management coordinated with the medical team.
▪️ Maintenance of hydration and oral function.
Evidence specifically addressing pediatric oncology patients remains limited. A MASCC/ISOO pediatric analysis found insufficient or conflicting evidence for many individual interventions and therefore supports implementation of basic oral care as a fundamental component of management. Chewing gum did not demonstrate preventive efficacy for oral mucositis in the pediatric studies reviewed.
4. Management of Dental Infection
Odontogenic infection during immunosuppressive therapy requires prompt multidisciplinary assessment.
The dentist should determine whether the condition represents:
▪️ Localized caries without infection.
▪️ Pulpal or periapical disease.
▪️ Periodontal infection.
▪️ Facial swelling or cellulitis.
▪️ A potentially spreading odontogenic infection.
Treatment should be coordinated with pediatric oncology, particularly when neutropenia, thrombocytopenia, fever, or severe systemic illness is present.
Antibiotics should not be prescribed solely because a child has cancer. Their indication depends on the clinical diagnosis, systemic involvement, immune status, and oncology team's assessment. Similarly, invasive dental treatment should be performed only after evaluating hematologic and medical risks.
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Cancer treatment may increase susceptibility to dental caries and deterioration of oral health, particularly when oral hygiene is compromised, salivary flow is reduced, dietary patterns change, or frequent medications and nutritional supplements are used.
Preventive management should emphasize:
▪️ Fluoride toothpaste appropriate for the child's age and caries risk.
▪️ Twice-daily toothbrushing when clinically tolerated.
▪️ Caregiver-assisted brushing when necessary.
▪️ Reduction of frequent exposure to fermentable carbohydrates.
▪️ Professional fluoride therapy when indicated.
▪️ Regular dental surveillance.
▪️ Management of xerostomia or hyposalivation.
The preventive strategy should continue after completion of active cancer treatment because some oral effects may persist for years.
6. Long-Term Dental Follow-Up
Survivors of childhood cancer require long-term dental monitoring, particularly when treatment occurred during periods of tooth development.
Reported late effects include:
▪️ Enamel defects
▪️ Microdontia
▪️ Tooth agenesis
▪️ Root-development abnormalities
▪️ Taurodontism
▪️ Increased caries experience
▪️ Hyposalivation
▪️ Periodontal changes
▪️ Malocclusion and altered craniofacial development
Recent systematic reviews continue to document these associations, although the magnitude of risk varies according to age at treatment, cancer type, therapeutic agents, radiotherapy exposure, and other treatment characteristics.
Radiographic evaluation should therefore be considered when clinically justified to monitor tooth development, root morphology, eruption, and other treatment-related abnormalities.
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The dental management of pediatric oncology patients is fundamentally preventive and multidisciplinary. The timing of dental treatment is often as important as the treatment itself. Pre-treatment stabilization of oral disease can reduce avoidable infectious and traumatic complications, while conservative oral care during active therapy helps preserve mucosal integrity and oral function.
However, clinical decisions cannot be based on a single laboratory value or a universal dental protocol. Hematologic parameters, cancer diagnosis, treatment intensity, HCT status, medications, mucosal condition, and the urgency of the dental problem must be considered together.
The evidence base also has important limitations. Pediatric-specific studies of mucositis interventions remain relatively scarce, and several recommendations continue to rely on extrapolation from adult oncology populations or expert consensus.
🎯 Clinical Recommendations
Because this topic is primarily management-oriented, Clinical Recommendations provide greater practical value than Clinical Pearls.
1. Complete a dental assessment before cancer therapy whenever the clinical timeline permits.
2. Prioritize elimination or stabilization of significant oral infectious foci before periods of profound immunosuppression.
3. Obtain current medical information and coordinate invasive treatment with the oncology team.
4. Maintain basic oral hygiene throughout cancer treatment, adapting the approach to mucosal tolerance.
5. Treat oral pain, mucositis, infection, and xerostomia promptly rather than waiting for routine dental appointments.
6. Continue dental surveillance after cancer therapy to detect developmental dental abnormalities and long-term oral complications.
7. Individualize treatment according to the child's oncology protocol rather than applying fixed dental thresholds or schedules.
✍️ Conclusion
Pediatric oncology dental management should integrate prevention, infection control, symptom management, and long-term surveillance. The pediatric dentist has an important role before, during, and after cancer therapy, particularly in identifying oral disease before immunosuppression and maintaining oral health throughout treatment.
Current evidence supports a multidisciplinary, individualized approach, while recognizing that pediatric-specific evidence remains limited for several interventions. Long-term follow-up is essential because dental and oral sequelae may become evident years after completion of cancer therapy.
📚 References
✔ American Academy of Pediatric Dentistry. (2016). Guideline on dental management of pediatric patients receiving chemotherapy, hematopoietic cell transplantation, and/or radiation therapy. Pediatric Dentistry, 38(6), 334–342.
✔ Elad, S., Cheng, K. K. F., Lalla, R. V., Yarom, N., Hong, C., Logan, R. M., Bowen, J., Gibson, R., Saunders, D. P., Zadik, Y., Ariyawardana, A., Correa, M. E., Ranna, V., & Bossi, P. (2020). MASCC/ISOO clinical practice guidelines for the management of mucositis secondary to cancer therapy. Cancer, 126(19), 4423–4431. https://doi.org/10.1002/cncr.33100
✔ Miranda-Silva, W., Gomes-Silva, W., Zadik, Y., Yarom, N., Al-Azri, A. R., Hong, C. H. L., Ariyawardana, A., Saunders, D. P., Correa, M. E., Arany, P., Bowen, J., Cheng, K. K. F., Tissing, W. J. E., Bossi, P., & Elad, S. (2021). MASCC/ISOO clinical practice guidelines for the management of mucositis: Sub-analysis of current interventions for the management of oral mucositis in pediatric cancer patients. Supportive Care in Cancer, 29(7), 3539–3562. https://doi.org/10.1007/s00520-020-05803-4
✔ Busenhart, D. M., Erb, J., Rigakos, G., Eliades, T., & Papageorgiou, S. N. (2018). Adverse effects of chemotherapy on the teeth and surrounding tissues of children with cancer: A systematic review with meta-analysis. Oral Oncology, 83, 64–72. https://doi.org/10.1016/j.oraloncology.2018.06.001
✔ Mishra, R., Kapur, A., Mathur, V. P., & Sardana, D. (2024). Late oral adverse effects of chemotherapy for hematological malignancies in children: A systematic review and meta-analysis of case-control studies. Oral Oncology, 159, 107103. https://doi.org/10.1016/j.oraloncology.2024.107103
✔ Torrecillas-Quiles, L., Gómez-Ríos, I., Jiménez-García, I., Serrano-Belmonte, I., Ortiz-Ruiz, A. J., & Serna-Muñoz, C. (2025). Oral and dental sequelae after oncological treatment in children: A systematic review. Journal of Clinical Medicine, 14(15), 5479. https://doi.org/10.3390/jcm14155479
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