下颌尖牙迁徙的流行病学、影像学和临床特征分析

doi:10.13591/j.cnki.kqyx.2025.02.003

摘要/Abstract

摘要：

目的应用CBCT分析下颌尖牙迁徙的流行病学、影像学和临床特征,为临床治疗决策提供辅助。方法回顾性分析2012年6月—2018年12月在南京医科大学附属口腔医院就诊拍摄CBCT发现诊断的下颌尖牙迁徙病例,评价其迁徙的部位、分类、对邻近结构的影响以及相关并发症。结果共计纳入82例病例,85颗下颌尖牙,下颌尖牙迁徙发生率为0.11%(82/75 021)。其中单侧迁徙79例,双侧3例;男39例,女43例;年龄10~58岁。迁徙类型主要为Ⅰ类(42,49.41%),其次为Ⅱ类(19,22.35%)和Ⅲ类(15,17.65%)。53(62.35%)颗患牙牙冠位于唇侧,常伴发牙瘤、囊肿及多生牙。70例患牙通过手术拔除,2例试行正畸牵引后拔除,10例临床观察随访。结论下颌尖牙迁徙是口腔临床罕见病例,具有一定临床影像学特征可以辅助临床诊疗。

关键词: 下颌尖牙, 迁徙, CBCT

Abstract:

Objective To characterize the epidemiological, radiographic and clinical features of transmigrated mandibular canines by cone-beam CT (CBCT), in order to provide assistance for treatment planning. Methods Patients treated at our institution diagnosed with mandibular canines transmigration were retrospectively screened using CBCT images from June 2012 to December 2018. Clinical and radiographic parameters including location, classification, neighbouring structures, and associated anomalies were evaluated. Results Eighty-two patients with 85 transmigrated mandibular canines were enrolled, establishing a prevalence of 0.11% (82/75 021). Among these cases, 79 patients had unilateral transmigration of mandibular canines; the other 3 had bilateral transmigrations. Thirty-nine cases were male and 43 were female, with age ranging from 10 to 58. According to the Mupparapu classification, type Ⅰ (42, 49.41%) was the most prevalent followed by type Ⅱ (19, 22.35%) and type Ⅲ (15, 17.65%). Fifty-three (62.35%) crowns were located labially, and often associated with odontoma, cyst and supernumerary tooth. Seventy transmigrated canines were surgically removed while 2 cases were tried to orthodontically aligned, failed and finally extracted. Ten cases received routine monitoring. Conclusion The transmigration of mandibular canines is rarely occurring abnormality with certain clinical imaging features which can assist in clinical diagnosis and treatment planning.

Key words: mandibular canines, transmigration, CBCT

中图分类号:

R782.1

张驰, 刁鹏飞, 吴亚平, 李晋, 刘学, 王东苗. 下颌尖牙迁徙的流行病学、影像学和临床特征分析[J]. 口腔医学, 2025, 45(2): 95-99.

ZHANG Chi, DIAO Pengfei, WU Yaping, LI Jin, LIU Xue, WANG Dongmiao. Analysis of epidemiological, radiological and clinical features associated with transmigrated mandibular canines[J]. Stomatology, 2025, 45(2): 95-99.

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