CBCT 观察下颌第三磨牙与下颌管的位置关系中的价值

CBCT 观察下颌第三磨牙与下颌管的位置关系中的价值

李泽奎¹,王丽君²,李辉¹

1. 天津医科大学口腔医院
2. 医大口腔医院放射科

收稿日期:2012-07-05 修回日期:2012-09-19 出版日期:2013-04-15 发布日期:2013-04-15
通讯作者: 李泽奎

CBCT in Assessing the positional Relationship bewteen Mandibular Third Molar and Mandibular Canal

Received:2012-07-05 Revised:2012-09-19 Published:2013-04-15 Online:2013-04-15
Contact: LI ZE KUI

李泽奎1 ,王丽君2 ,李辉1 . CBCT 观察下颌第三磨牙与下颌管的位置关系中的价值[J]. .

摘要/Abstract

摘要： 【摘要】目的：分析评价CBCT(cone beam computed tomography,CBCT)在观察下颌第三磨牙( mandibular thaid molar,MTM)与下颌管(mandibular canal,MC)的位置关系中的价值。方法：对我院2012年1月至2012年5月期间行CBCT检查的存在下颌第三磨牙的104名成年患者（191颗牙）的下颌第三磨牙与下颌管关系进行分类比较，利用CT自带图像处理软件（examvision）对图像测量分析。通过SPSS软件对所得数据进行统计学处理。结果： 191颗牙中，共有85颗MTM与MC有接触，在下颌第三磨牙和下颌管的位置关系以及接触的概率均与性别无关（P＞0.05），而是与二者的位置关系有关，MC位于MTM 舌侧和根间时，二者接触的几率最大。结论：颌骨CBCT可以完整准确的反映下颌管与下颌第三磨牙的位置关系。

关键词: CBCT, 下颌第三磨牙, 下颌管

Abstract: 【Abstract】 Objective:To assess the value of CBCT in observing the positional relationship bewteen mandibular third molar and mandibular canal. Methods:Totally 104 aduted patients (Stomatological Hospital of Tianjin Medical University, from 2012.1 to 2012.5) with 191 mandibular third molars were assessed with CBCT. All the images were classed and measured by CBCT Image processing software (Examvision).The results were processed statistically with SPSS software package.Results:There were 85 mandibular third molars contacting with mandibular canals.The positional relationship bewteen mandibular third molar and mandibular canal and the probability of mandibular third molar contacted with mandibular canal were independent of gender（P＞0.05）.The Correlation existed between their positional relationship and the probability of mandibular third molar contacted with mandibular canal.And when mandibular canal locates at the lingual side of mandibular third molar or between the roots of mandibular third molar, it has the largest probability of contacting with mandibular third molar. Conclusion:CBCT can predict exactly the positional relationship bewteen mandibular third molar and mandibular canal.

Key words: CBCT, mandibular third molar, mandibular canal.