DOI: https://doi.org/10.36347/sjmcr.2025.v13i10.093

Pages: 2576-2582

Introduction: Dentigerous cysts (DC) are the most frequent bone lesions of the jaws in childhood. On imaging, they commonly appear as a unilocular radiolucency encircling the crown of an unerupted or impacted tooth. Several therapeutic approaches are available depending on the size of the cyst, its location, and the age of the patient. Conservative treatments, such as marsupialization and decompression, have proven effective, especially in younger patients, by allowing for tooth eruption and reducing the size of the cyst without significant damage to surrounding structures. For larger cysts or those that pose a risk of recurrence, enucleation may be necessary to completely excise the lesion. Case report: This report describes a large mandibular DC, in an 11-year-old female patient, associated with permanent right second premolar. The DC was treated successfully by marsupialization leading to spontaneous eruption of the impacted tooth and followed up for 10 years with no sign of recurrence. Discussion: In the literature, spontaneous eruption of the involved tooth and full resolution of the cyst treated with only marsupialization without second surgical intervention has been rarely reported. Radiological follow-up plays a crucial role in monitoring the healing process and ensuring the proper eruption of the tooth in question. Conclusion: Long-term follow-up remains essential to monitor eruption patterns and confirm complete resolution.