成人骨性Ⅲ类患者不同垂直骨面型下颌联合形态的CBCT研究  

A CBCT study of mandibular symphysis morphology of Class Ⅲ malocclusion patients with different facial vertical skeletal patterns

作　　者：王岩[1] 边慧慧[1] 郑颖[1] 刘奕[1] WANG Yan BIAN Huihui ZHENG Ying LIU Yi.(Fengtian Dental Clinic, School of Stomatology, China Medical University, Shenyang 110013, China)

机构地区：[1]中国医科大学附属口腔医院奉天门诊,辽宁沈阳110013

出　　处：《口腔医学》2016年第10期917-919,共3页Stomatology

基　　金：辽宁省教育厅科学研究资助项目(L2015584)

摘　　要：目的比较不同的垂直骨面型的成人骨性安氏Ⅲ类患者下颌联合形态差异。方法成人Ⅲ类患者69例作为实验组,成人Ⅰ类患者25例作为对照组。在CBCT上测量下中切牙-下颌平面角(IMPA)以及下颌联合高度(LH)和下切牙根尖处牙槽骨厚度(LA、LP),比较不同垂直骨面型Ⅲ类患者的下颌联合形态的差异。结果在骨性安氏Ⅲ错牙合中,下颌联合高度(LH)与下颌平面角呈正相关,下中切牙-下颌平面角(IMPA)与下颌平面角呈负相关、与下切牙根尖处颊侧牙槽骨厚度呈正相关。结论高角型的骨性安氏Ⅲ患者下颌联合形态趋于菲薄狭长,下前牙代偿性舌倾随着长面型的趋势加重,同时伴随其颊侧牙槽骨厚度减小。Objective To compare mandibular symphysis morphology of Class Ⅲ malocclusion patients with different facial vertical skeletal patterns. Methods 69 Class Ⅲmalocclusion adult patients were divided into the experimental group and 25 Class I adult patients were in the control group. Incisor mandibular plane angle （ IMPA） , symphysis height （ LH） and the thickness of alveolar bone in mandibular incisor area of adult patients were measured by CBCT. Results Variations in the mandibular plane had a negative correlation with IMPA and a positive correlation with LH, and IMPA had a positive correlation with the thickness of the buccal alveolar bone. Conclusion An increased trend of long and narrow mandibular symphsis morphology in ClassⅢmalocclusion leads to variablelength of symphysis height, more lingual inclination of mandibular incisor, and decreasing thickness of the buccal alveolar bone.

关 键 词：骨性Ⅲ类 下颌联合形态 下中切牙-下颌平面角 CBCT 

分 类 号：R783.5[医药卫生—口腔医学]