INTRODUCTION:Orthodontics in China has developed rapidly, but there is no standard index of treatment outcomes. We assessed the validity of the American Board of Orthodontics Objective Grading System (ABO-OGS) for the classification of treatment outcomes in Chinese patients. METHODS:We randomly selected 108 patients who completed treatment between July 2005 and September 2008 in 6 orthodontic treatment centers across China. Sixty-nine experienced Chinese orthodontists made subjective assessments of the end-of-treatment casts for each patient. Three examiners then used the ABO-OGS to measure the casts. Pearson correlation analysis and receiver operating characteristic curve analysis were conducted to evaluate the correspondence between the ABO-OGS cast measurements and the orthodontists' subjective assessments. RESULTS:The average subjective grading scores were highly correlated with the ABO-OGS scores (r = 0.7042). Four of the 7 study cast components of the ABO-OGS score-occlusal relationship, overjet, interproximal contact, and alignment-were statistically significantly correlated with the judges' subjective assessments. Together, these 4 accounted for 58% of the variability in the average subjective grading scores. The ABO-OGS cutoff score for cases that the judges deemed satisfactory was 16 points; the corresponding cutoff score for cases that the judges considered acceptable was 21 points. CONCLUSIONS:The ABO-OGS is a valid index for the assessment of treatment outcomes in Chinese patients. By comparing the objective scores on this modification of the ABO-OGS with the mean subjective assessment of a panel of highly qualified Chinese orthodontists, a cutoff point for satisfactory treatment outcome was defined as 16 points or fewer, with scores of 16 to 21 points denoting less than satisfactory but still acceptable treatment. Cases that scored greater than 21 points were considered unacceptable.

译文

引言:中国的正畸学发展迅速,但尚无标准的治疗结果指标。我们评估了美国正畸客观分级系统委员会(ABO-OGS)对中国患者治疗结果进行分类的有效性。
方法:我们随机选择了2005年7月至2008年9月在中国6个正畸治疗中心完成治疗的108名患者。 69名经验丰富的中国牙齿矫正医生对每位患者的治疗结束后的石膏模型进行了主观评估。然后,三名检查员使用ABO-OGS来测量石膏。进行了Pearson相关分析和接收器工作特性曲线分析,以评估ABO-OGS石膏测量结果与正畸医生的主观评估之间的对应关系。
结果:平均主观评分与ABO-OGS评分高度相关(r = 0.7042)。在ABO-OGS得分-咬合关系,过度喷射,近端接触和对齐方式的7个研究演员中,有4个与法官的主观评估在统计学上显着相关。这四者合起来占平均主观评分得分变异性的58%。法官认为满意的案件的ABO-OGS截止分数是16分;法官认为可以接受的案件的最低得分是21分。
结论:ABO-OGS是评估中国患者治疗效果的有效指标。通过将ABO-OGS修改的客观得分与一组高素质的中国正畸医生的平均主观评估进行比较,将令人满意的治疗结果的临界点定义为16分或更少,其中16-21分的分数表示不太令人满意,但仍然可以接受的治疗。得分超过21分的案件被认为是不可接受的。

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