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学科主题口腔医学
Changes in anteroposterior position and inclination of the maxillary incisors after surgical-orthodontic treatment of skeletal class III malocclusions
Zou, Bingshuang1; Zhou, Yang1; Lowe, Alan A.2; Li, Huiqi3; Pliska, Benjamin2
关键词Class Iii Malocclusion Esthetics Maxillary Incisor Inclination Maxillary Incisor Position Smiling Profile Surgical-orthodontic Treatment
刊名JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY
2015-12-01
DOI10.1016/j.jcms.2014.12.013
43期:10页:1986-1993
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Dentistry, Oral Surgery & Medicine ; Surgery
研究领域[WOS]Dentistry, Oral Surgery & Medicine ; Surgery
关键词[WOS]HARD-TISSUE CHANGES ; ORTHOGNATHIC SURGERY ; BIMAXILLARY SURGERY ; PART 1 ; SOFT ; SMILE ; AESTHETICS ; PROFILE ; ATTRACTIVENESS ; NONEXTRACTION
英文摘要

Purpose: The purpose of this study was to evaluate and compare the anteroposterior (AP) position and inclination of the maxillary incisors in subjects with class I normal occlusion and a harmonious profile with patients with skeletal class III malocclusions, and to investigate the changes in maxillary incisor inclination and AP position after surgical-orthodontic treatment in class III patients.

Material and methods: Sixty-five subjects (35 female and 30 male; mean age: 21.8 +/- 3.89 years) with normal profiles and class I skeletal and dental patterns were selected as a control sample. Sixty-seven patients (38 female and 29 male; mean age: 21.3 +/- 3.31 years) with skeletal and dental class III malocclusions who sought surgical-orthodontic treatment were used as the study sample. Subjects were asked to smile and profile photographs were taken with the head in a natural position and the maxillary central incisors and the forehead in full view; cephalograms were taken and superimposed on the profile pictures according to the outline of the forehead and nose. Forehead inclination, maxillary incisor facial inclination and the AP position of the maxillary central incisor relative to the forehead (FAFFA) were measured on the integrated images and statistical analyses were performed.

Results: In both groups, there were no significant male/female differences in either the maxillary central incisor inclination or AP position. Female subjects had a significantly steeper forehead inclination compared with males (P < 0.001) in both groups. After combined surgical-orthodontic treatment, the significant labial inclination (P < 0.001) and posterior positioning (P < 0.001) of the maxillary central incisors had been corrected to close to normal range (P> 0.05). In the control group, 84.6% had the facial axial point (FA) of their maxillary central incisors positioned between lines through the forehead facial axis (FFA) point and the glabella. In the study group, however, 79.1% had the maxillary central incisors positioned posterior to the line through the FFA point and the difference with the control group was statistically significant (P < 0.001). The position of the maxillary central incisors was strongly correlated with forehead inclination in the control sample (r(2) = 0.456; P < 0.01), but only a poor correlation was detected in the class III group (r(2) = 0.177; P> 0.05).

Conclusions: With the integrated radiograph photograph method, the lateral cephalogram was reoriented, which makes it possible to accurately measure the variables on profile photographs. The AP position and inclination of the maxillary central incisors relative to the forehead plays an important role in the esthetics of the profile during smiling and could be an important variable to be considered during diagnosis and treatment planning. (C) 2015 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.

语种英语
WOS记录号WOS:000367106300009
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/56897
专题北京大学口腔医学院_牙周科
北京大学口腔医学院_第一门诊部
作者单位1.Peking Univ, Sch & Hosp Stomatol, Dept Orthodont, Beijing, Peoples R China
2.Univ British Columbia, Fac Dent, Dept Oral Hlth Sci, Vancouver, BC V5Z 1M9, Canada
3.Beijing Inst Technol, Sch Informat & Elect, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Zou, Bingshuang,Zhou, Yang,Lowe, Alan A.,et al. Changes in anteroposterior position and inclination of the maxillary incisors after surgical-orthodontic treatment of skeletal class III malocclusions[J]. JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY,2015,43(10):1986-1993.
APA Zou, Bingshuang,Zhou, Yang,Lowe, Alan A.,Li, Huiqi,&Pliska, Benjamin.(2015).Changes in anteroposterior position and inclination of the maxillary incisors after surgical-orthodontic treatment of skeletal class III malocclusions.JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY,43(10),1986-1993.
MLA Zou, Bingshuang,et al."Changes in anteroposterior position and inclination of the maxillary incisors after surgical-orthodontic treatment of skeletal class III malocclusions".JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY 43.10(2015):1986-1993.
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