Discovery of an extra tooth in the right lower third molar area
发现右下第三磨牙区多生牙一例

摘要

目的 探讨右下第三磨牙（智齿）区埋伏多生牙的临床特点、诊断方法及治疗方案。方法 回顾性分析2025年12月收治的1例右下第三磨牙区多生牙患者的临床资料，包括病史、影像学检查（曲面断层片及锥形束CT）及手术过程，总结其诊断与治疗要点。结果 通过临床及影像学检查明确诊断为“48牙远中埋伏多生牙”，在锥形束CT三维重建引导下，行“48牙拔除术+多生牙摘除术”，手术顺利，术后恢复良好，无下唇麻木、邻牙损伤等并发症。结论 对于第三磨牙区埋伏多生牙，完善的影像学评估[尤其是锥形束CT（CBCT）]是明确诊断、评估风险及规划手术路径的关键。精准的微创外科手术可有效移除病变，保护重要解剖结构，临床效果满意。

Abstract

Objective To explore the clinical characteristics, diagnostic methods, and treatment plans for impacted supernumerary teeth in the right lower third molar region.
Methods The clinical data of a patient with supernumerary teeth in the right lower third molar region admitted in December 2025 were retrospectively analyzed, including medical history, imaging examinations (occlusal tomography and cone-beam CT), and surgical process. The key points of diagnosis and treatment were summarized.
Results Through clinical and imaging examinations, it was confirmed as “an impacted distal supernumerary tooth of the 48th tooth”. Under the guidance of cone-beam CT three-dimensional reconstruction, “the 48th tooth extraction + supernumerary tooth removal” was performed. The surgery was successful, and the postoperative recovery was good. There were no complications such as numbness of the lower lip or damage to adjacent teeth.
Conclusion   For impacted supernumerary teeth in the third molar region, comprehensive imaging assessment [especially Cone-Beam Computed Tomography (CBCT)] is crucial for a clear diagnosis, risk assessment, and planning of the surgical path. Precise minimally invasive surgical procedures can effectively remove the lesion and protect important anatomical structures, with satisfactory clinical outcomes.