The effects of incisor inclination changes on the position of point A in Class II division 2 malocclusion using three-dimensional evaluation: a long-term prospective study

科研成果详情

题名	The effects of incisor inclination changes on the position of point A in Class II division 2 malocclusion using three-dimensional evaluation: a long-term prospective study
作者	Chen, Qiushuo; Zhang, Caixia; Zhou, Yu
发表日期	2014-12-31
发表期刊	INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL MEDICINE 影响因子和分区
语种	英语
原始文献类型	Article
关键词	Class II division 2 point A maxillary incisor proclination point A.
其他关键词	BEAM COMPUTED-TOMOGRAPHY ; NONEXTRACTION TREATMENT ; ROOT RESORPTION ; BEGG ; RADIOGRAPHY ; EDGEWISE
摘要	Objective: The aim of this study was to evaluate change in the sagittal position of point A due to orthodontic treatment by orthodontic community-cone beam computed tomography (CBCT). Materials and methods: 40 subjects (22 males and 18 females) who had Class II division 2 malocclusion were recruited, and 40 subjects (23 males and 17 females) who had minor crowding in the beginning of the treatment and required no or minimal maxillary anterior tooth movement were served as control. The changes in maxillary incisor inclination, sagittal position of point A, SNA angle, and movement of incisor root apex and incisal edge were calculated before and after CBCT treatment. Results: Maxillary incisors were significantly proclined in the study group but not in the control group. This proclination resulted in 2.95 mm backward movement of the root apex and 6.23 mm forward movement of the incisal edge of maxillary incisors. Point A moved 1.24 mm and 0.18 mm backward in the study and control groups, respectively. Incisor root apex and incisal edge almost remained stable in the control group. No significant change was observed in the SNA angle in both the study and control groups. However, the change in SNA between the two groups was found to be significant. Conclusions: Proclination of maxillary incisors with backward movement of incisor root apex caused posterior movement of point A. This posterior movement significantly affects the SNA angle.
出版者	E-CENTURY PUBLISHING CORP
出版地	MADISON
ISSN	1940-5901
卷号	7 期号:10 页码:3454-3460
页数	7
WOS类目	Medicine, Research & Experimental
WOS研究方向	Research & Experimental Medicine
WOS记录号	WOS:000345121100040
收录类别	SCIE ; PUBMED ; SCOPUS
URL	查看原文
PubMed ID	25419382
PMC记录号	PMC4238535
SCOPUSEID	2-s2.0-84910091912
通讯作者地址	[Zhou, Yu]Department of Orthodontics, Hospital of Stomatology, Wenzhou Medical University, Wenzhou,113 West College Road,Wenzhou,325027,China
Scopus学科分类	Biochemistry, Genetics and Molecular Biology (all)
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://kms.wmu.edu.cn/handle/3ETUA0LF/13873
专题	口腔医学院、附属口腔医院_正畸科
通讯作者	Zhou, Yu
作者单位	Department of Orthodontics, Hospital of Stomatology, Wenzhou Medical University,Wenzhou,325027,China
第一作者单位	口腔医学院、附属口腔医院_正畸科
通讯作者单位	口腔医学院、附属口腔医院_正畸科
第一作者的第一单位	口腔医学院、附属口腔医院_正畸科
推荐引用方式 GB/T 7714	Chen, Qiushuo,Zhang, Caixia,Zhou, Yu. The effects of incisor inclination changes on the position of point A in Class II division 2 malocclusion using three-dimensional evaluation: a long-term prospective study[J]. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL MEDICINE,2014,7(10):3454-3460.
APA	Chen, Qiushuo, Zhang, Caixia, & Zhou, Yu. (2014). The effects of incisor inclination changes on the position of point A in Class II division 2 malocclusion using three-dimensional evaluation: a long-term prospective study. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL MEDICINE, 7(10), 3454-3460.
MLA	Chen, Qiushuo,et al."The effects of incisor inclination changes on the position of point A in Class II division 2 malocclusion using three-dimensional evaluation: a long-term prospective study".INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL MEDICINE 7.10(2014):3454-3460.