使用ABO模型分级系统评估隐适美矫治器在拔牙病例中的有效性：一项多中心随机对照试验。
The effectiveness of the Invisalign appliance in extraction cases using the the ABO model grading system: a multicenter randomized controlled trial.
作者信息
Li Weihong, Wang Shimei, Zhang Yanzhen
机构信息
The Second Affiliated Hospital Zhejiang University School of Medicine Hangzhou, China.
出版信息
Int J Clin Exp Med. 2015 May 15;8(5):8276-82. eCollection 2015.
OBJECTIVE
The aim of this study was to assess treatment outcomes of the Invisalign and compare results with braces.
METHODS
One hundred and fifty-two adult orthodontic patients, referred to two Orthodontic Specialist Clinics, were randomized to receive either invisalign or brace treatment. All patients were evaluated by using methods from the American Board of Orthodontics Phase III examination. The discrepancy index was used to analyze pretreatment records to control for initial severity of malocclusion. The objective grading system was used to systematically grade posttreatment records. The Wilcoxon 2-sample tests were used to evaluate treatment outcome of Invisalign and braces.
RESULTS
The total mean scores of the objective grading system categories were improved after treatment in both groups. The improvements were not statistically significant in scores for alignment, marginal ridges, occlusal relations, over jet, inter-proximal contacts, and root angulation. Invisalign scores were consistently lower than braces scores for buccolingual inclination and occlusal contacts.
CONCLUSIONS
The overall improvement in OGS scores indicate that both Invisalign and fixed appliances were successful in treating Class I adult extraction cases in this sample.
目的
本研究旨在评估隐适美矫治效果，并与传统牙套进行结果对比。
方法
152名转诊至两家正畸专科诊所的成年正畸患者被随机分为两组，分别接受隐适美或传统牙套治疗。所有患者均采用美国正畸委员会III期检查方法进行评估。采用差异指数分析治疗前记录，以控制错颌畸形的初始严重程度。使用客观分级系统对治疗后记录进行系统分级。采用威尔科克森双样本检验评估隐适美和传统牙套的治疗效果。
结果
两组治疗后客观分级系统各分类的总平均分均有所提高。在排齐、边缘嵴、咬合关系、覆盖、邻面接触和牙根角度方面，分数的提高无统计学意义。在颊舌向倾斜和咬合接触方面，隐适美的分数始终低于传统牙套。
结论
客观分级系统（OGS）分数的总体提高表明，在本样本中，隐适美和固定矫治器在治疗成人I类拔牙病例方面均取得了成功。
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