角III类病例的治疗后稳定性。

IF 0.5 Q4 DENTISTRY, ORAL SURGERY & MEDICINE
Jun Yoshizumi, K. Sueishi
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引用次数: 2

摘要

本研究的目的是比较Angle III类病例治疗后的稳定性,这些病例按治疗方式分为拔牙、非拔牙和手术。选取东京牙科学院正畸科合格留置病例27例(男9例,女18例)。将患者分为两组:第一组,拔牙(n=10);第二组,未提取(n=9);第三组为手术组(n=8)。在基线(T0)、积极治疗后(T1)和留置后(T2)分别获得侧位脑电图、全景x线和研究模型。采用ABO模型分级系统(ABO)和Gottlieb分级分析(GGA)作为咬合的指标,记录各阶段的评分以及T1和T2的评分差异(|T1-T2|),定义为咬合后的稳定性。同时记录研究模型的Little's不规则指数(IRI)和T0、T1和T2侧位头颅造影的ANB,从不同角度评估治疗后的稳定性。采用Kruskal-Wallis检验进行统计学比较。T1、T2和|T1-T2|的ABO和Kruskal-Wallis试验平均排名1组最低,3组最高,积极治疗后ABO评分的平均变化量也相同。这表明治疗后稳定性在非拔牙病例中最高,在手术病例中最低。这一结果与从T0到T1的ANB变化相关。这表明ANB的变化量影响治疗后的稳定性,手术病例的复发往往更大。然而,积极治疗后IRI的变化量在组2中最高,在组3中最低,这表明非拔牙病例中下门牙的复发最大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Post-treatment Stability in Angle Class III Cases.
The purpose of this study was to compare post-treatment stability in Angle Class III cases grouped by treatment modality into extraction, non-extraction, or surgical. Twenty-seven Angle Class III patients (9 men, 18 women) were selected from among the records of qualified retention cases treated at the Department of Orthodontics, Tokyo Dental College. The patients were divided into the following groups: Group 1, extraction (n=10); Group 2, non-extraction (n=9); and Group 3, surgery (n=8). Lateral cephalograms, panoramic X-rays, and study casts were obtained at baseline (T0), after active treatment (T1), and after retention (T2). The ABO Model Grading System (ABO) and Gottlieb's Grading Analysis (GGA) were used as indices of occlusion, and the scores at each stage and differences in scores at T1 and T2 (|T1-T2|), defined as post-retention stability, recorded. Little's Irregularity Index (IRI) from the study casts and the ANB from lateral cephalograms at T0, T1, and T2 were also recorded to assess post-treatment stability from a different perspective. The Kruskal-Wallis test was performed for statistical comparisons. Mean ranking according to the ABO and Kruskal-Wallis test at T1, T2, and |T1-T2| was lowest in Group 1 and highest in Group 3, and the mean amount of change in the ABO score after active treatment was also the same. This suggests that post-treatment stability is highest in non-extraction cases and lowest in surgical cases. This result correlated with change in the ANB from T0 to T1. This indicates that amount of change in the ANB affects post-treatment stability and that relapse will tend to be greater in surgical cases. However, the amount of change in IRI after active treatment was highest in Group 2 and lowest in Group 3, suggesting that relapse of the lower incisors is greatest in non-extraction cases.
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来源期刊
Bulletin of Tokyo Dental College
Bulletin of Tokyo Dental College DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
0.90
自引率
0.00%
发文量
15
期刊介绍: The bulletin of Tokyo Dental collegue is principally for the publication of original contributions to multidisciplinary research in dentistry.
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