Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Clinical Stomatology》 2018-09
Add to Favorite Get Latest Update

Relationship between the angulation of the third molar and the retromolar space and the occurrence of skeletal class Ⅲ malocclusion

TIAN Ling;ZHOU Nuo;SONG Shao-hua;Department of Oral and Maxillofacial Surgery,College of Stomatology,Guangxi Medical University;  
Objective: To analyze the relationship between the angulation and the retromolar space of the third molar and skeletal class Ⅲ malocclusion. Methods: A total of 60 orthodontic patients were investigated from dental pantomograms( DPTs) and lateral cephalograms( LC). The subjects were divided into two groups according to their ANB angle,that skeletal class I and skeletal class Ⅲ. Values of DPT and LC were traced and the following variables were measured that were SNA angle,SNB angle,retromolar space width,third molar angulation,Go-Co length,Go-Pog length and SN-MP angel. Results:There was a difference in gender distribution between the two groups( P 0. 05). There was no difference in age distribution,Go-Co,and SN-MP( P 0. 05) respectively. The angle of SNA and angulation of third molar in skeletal class Ⅲ subjects were smaller than those in skeletal class I subjects( P 0. 05) respectively. The angle of SNB,Go-Pog length and the retromolar space in skeletal class Ⅲ subjects were larger than in the skeletal class I subjects( P 0. 05) respectively. Binary logistic regression showed that the retromolar space was a risk factor and the angulation of third molar was a protective factor. Conclusion:There is a relationship between the angulation of the third molar and the retromolar space and the occurrence of skeletal class Ⅲmalocclusion.
【Fund】: 国家自然科学基金资助项目(81670970)
【CateGory Index】: R783.5
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved