CBCT测量下颌正中舌孔发生率位置及临床意义  

Measurement of the incidence,location and clinical significance of mandibular median lingual foramen by conebeam computed tomography examination

作　　者：苏润青 刘亚昆[1,2] 赵彬[1,2] SU Run-qing;LIU Ya-kun;ZHAO Bin(Department of Imaging,Stomatological Hospital,Shanxi Medical University,Taiyuan 030000,China;Key Laboratory of Oral Disease Prevention and New Materials,Shanxi Province,Taiyuan 030000,China)

机构地区：[1]山西医科大学口腔医院影像科,太原030000 [2]山西医科大学口腔疾病防治与新材料山西省重点实验室,太原030000

出　　处：《口腔颌面修复学杂志》2021年第6期435-440,共6页Chinese Journal of Prosthodontics

基　　金：山西省重点研发计划项目(项目编号:201803D12041)。

摘　　要：目的:通过对锥形束CT(CBCT)影像中下颌正中舌孔(medial lingual foramina,MLF)和下颌正中舌管(medial lingual canal,MLC)进行回顾性研究,总结发生和位置情况,为下颌中切牙种植,颏部取骨和颏成形术提供参考。方法:选取2021年4-6月在山西医科大学口腔医院就诊的286例患者的CBCT资料,按年龄分为3组,观测正中联合区舌孔分布位置、数量、组合型频率,舌孔与下颌各标志点距离,正中舌管、方向,统计以上各项与年龄性别的关系。结果:观测的286例中,均检出正中舌孔,共488个,平均每人(1.69±0.64)个;舌管的平均长度为(6.79±1.43)mm;舌管与舌侧牙槽嵴顶平均角度为(82.85±24.42)°;正中舌孔距离舌侧牙槽嵴顶(23.18±5.26)mm;距下颌下缘(10.59±4.56)mm;距颊侧皮质骨(5.34±1.29)mm。正中舌孔数目与年龄相关;与标志点距离性别相关,增龄变化明显。结论:下颌正中联合均检出舌孔、舌管,CBCT能较为准确地确定其位置,种植手术、颏部自体骨移植、颏成形术应注意避让这些结构。Objective:The occurrence and location of the mandibular median lingual foramina(MLF)and the mandibular median lingual canal(MLC)in cone beam CT(CBCT)images were studied retrospectively,to provide reference for the mandibular central incisor implantation,chin bone extraction and genioplasty.Methods:We selected 286 patients􀆳CBCT data between April to June 2021 in the stomatological hospital of Shanxi Medical University and divided into three groups according to age.The number,combination type frequency and distribution of lingual foramen in mandibular symphysis area,the distance from MLF to mandibular landmarks,the length and direction of midline lingual canal were measured,their relationships with age and gender were also calculated.Results:In the 286 cases,488 lingual foramina were observed,(1.69±0.64)per person on average;the average length of lingual canal is(6.79±1.43)mm;the average angle of lingual canal and lingual alveolar crest is(82.85±24.42)°;the distance from MLF to lingual alveolar crest and to inferior margin of mandibleis(23.18±5.26)mm and(10.59±4.56)mm respectively.The distance between the end of MLCs to the buccal cortical bone is(5.34±1.29)mm.The number of MLF was age-related,the distance between MLF to the mandibular markers was related to gender,and changed significantly with age.Conclusion:The midline lingual foramen and lingual canal were detected in the midline mandibular syndesmosis,CBCT image can accurately determine its position.These structures should be avoided in implant surgery,chin autogenous bone transplantation and genioplasty.

关 键 词：锥形束CT 下颌正中联合 正中舌孔 正中舌管 颏部骨移植 颏成形术 

分 类 号：R782.051[医药卫生—口腔医学]