拔除下颌第三磨牙对下颌角区形态影响的CBCT研究  

Morphological Influence of the Mandibular Third Molar Extraction to the Angulusmandibulae Using Cone-Beam Computed Tomography

作　　者：邓蓉霞[1] 丁寅[1] 孙伯阳[1] 郭涛[1] 鱼敏[1] 

机构地区：[1]第四军医大学附属口腔医院正畸科,陕西西安710032

出　　处：《现代生物医学进展》2012年第11期2107-2110,共4页Progress in Modern Biomedicine

摘　　要：目的:探讨下颌第三磨牙的拔除会否造成下颌角区骨骼形态的变化以及这种变化对面型的影响。方法:30例因矫治需要拔除下颌第三磨牙的成人正畸患者,在拔牙前和拔牙后6个月拍摄CBCT片,采用三维测量软件mimics10.01测量下颌第三磨牙所在的下颌角区牙槽骨骨质的宽度、高度和长度,利用SPSS18.0统计软件分析前后数值有无差异。结果:下颌第三磨牙拔除前后下颌角区骨质宽度和高度减小,差异有统计学意义(P<0.05),下颌角区骨质前后向长度未见明显差异。结论:拔除下颌第三磨牙能从一定程度上减小下颌角区骨质高度和宽度,但是前后向长度度基本没有变化。Objective： To explore the influence of the mandibular third molar extraction on the morphological changes of gonia angle.Methods： 30 adult orthodontic patients whose mandibular third molars need to be extracted for treatment had taken CBCT imaging before the teeth extracted,then 6 months later all the patients received the second CBCT scanning.We measured the width,height and length of the alveolar bone of the mandibular third molar through Mimics 10.01 software and compared the data using SPSS18.0 statisti-cal software.Results： After the extraction of the mandibular third molar,the width and height of alveolar bone located in the gonial angle reduced,and the difference had statistical significance,while the length had no conspicuous change.Conclusion： Extraction of mandibular third molar can reduce the width and height of angulusmandibulae bone to some extent,but the saggital length has no significant changes.

关 键 词：下颌第三磨牙 CBCT 下颌角 

分 类 号：R782[医药卫生—口腔医学]