하악 매복지치와 연관된 낭종 및 종양의 발생

Abstract

ABSTRACT Prevalence of odontogenic cysts and tumors associated with impacted mandibular third molars

By Seung-Min Shin Advisor : Prof. Seong-Yong Moon D.D.S. M.D.S Department of Oral and Maxillofacial Surgery, Graduate School of Chosun University

Purpose: The aim of this study was to determine the frequency and type of radiographically detectable lesion around impacted mandibular third molars in 16657 patients. Patients and Methods: A retrospective study of patients referred to the department of Oral and Maxillofacial Surgery for surgical removal of impacted mandibular molars. The analysis outcome measures were the patients’ age and gender, any radiographic lesions associated with the impacted mandibular third molars and complications after sugery. The radiographic lesions were recorded in relation to the impacted mandibular third molar. Results: 111 patients of 157 patients who had dentigerous cyst (70.7%) had impacted mandibular third molar. 18 patients of 157 patients who had radicular cyst (11.5%) had impacted mandibular third molar. 18 patients of 157 patients who had odontogenic keratocyst (11.5%) had impacted third molar. 8 patients of 157 patients who had ameloblastoma (5.0%) had impacted third molar. And 2 patients of 157 patients who had paradental cyst (1.3%) had impacted third molar. Conclusion: According to this result, we find an association between impacted third molars and lesions especially in dentigerous cyst, radicular cyst, odontogenic keratocyst, amleoblastoma and paradental cyst. The impacted third molar is needed to be extracted in preventional treatment.