下颌管二维位置特点的研究  

The study of two-dimensional position characteristics of mandibular canal

作　　者：李红玖[1] 姚志文[1] 杨安[1] 

机构地区：[1]广州医学院附属深圳沙井医院口腔科,广东深圳518104

出　　处：《蚌埠医学院学报》2013年第7期824-826,共3页Journal of Bengbu Medical College

摘　　要：目的:观察正常人下颌管距下颌骨下缘(管缘)、牙齿牙根(管根)及牙槽嵴顶(管嵴)的距离。方法:对100例18～40岁无牙周病变的正常人群摄下颌骨全景片,分别测量管缘距离、管根距离、管嵴距离。结果:管缘距离为5～12 cm,管根距离为1.5～10 cm,管嵴距离14.5～23 cm,5、6、7牙位根尖点连线大致呈以鼻骨根部为圆心的圆弧线,同下颌骨下缘连线,牙槽嵴顶的连线大致呈以鼻骨根部为圆心的同心圆关系,男女间差异均无统计学意义(P>0.05)。结论:采用全景片研究下颌骨的二维位置特点,即垂直向位置特点是可行的,可以为临床上如下颌骨骨折坚强内固定、拔牙、根管治疗、种植牙等提供依据。Objective：To measure the distance of mandibular canal to the lower edge of mandible and tooth root to the alveolar crest. Methods：The panoramic tooth slice of 100 heathy 18 to 40 years old humans without periodontal disease were detected, and which were divided into man and woman group. The distance of tube edge, tube root and tube crest of all people were measured. Results：The distance of tube edge,tube root and tube crest were 5 to 12 cm,1.5 to 10 cm and 14.5 to 23 cm,respectively. The root tip point ligature of tooth 5,6 and 7 was circular arc line with the center of nasal bone root. The mandible lower edge and alveolar ridge top ligature were concentric relationship with the center of nasal bone root. There were not significant differences between man and woman group （P 〉 0.05 ）. Conclusions ： According to the two-dimensional position characteristics of the mandible, the vertical position characteristics are feasible, it can provide a theoretical basis for mandibular fracture rigid internal fixation, tooth extraction, root canal treatment.

关 键 词：下颌管 下颌骨 X线片 

分 类 号：R322.41[医药卫生—人体解剖和组织胚胎学]