Younis J W, Vig K W, Rinchuse D J, Weyant R J
University of Pittsburgh School of Dental Medicine, Division of Pediatric and Developmental Dental Sciences, Pennsylvania 15261, USA.
Community Dent Oral Epidemiol. 1997 Oct;25(5):358-62. doi: 10.1111/j.1600-0528.1997.tb00955.x.
The purpose of this study was to compare the reliability and validity of three occlusal indexes of orthodontic treatment need in predicting the opinion of treatment need of a panel of 18 orthodontists. A set of 160 study casts representing all types of malocclusion was used. The casts were scored with the following occlusal indexes: the Index of Orthodontic Treatment Need (IOTN), the Handicapping Labio-Lingual Deviations index (HLD), and the Handicapping Malocclusion Assessment Record (HMAR modified). The diagnostic accuracy or validity of each index was calculated using the mean opinion of the orthodontic raters as a "gold standard". Receiver Operating Characteristic curves were plotted for each index. The overall diagnostic accuracy, as determined by percent area under the curve, was similar for each index: IOTN 98.6%; HLD 96.1%; HMAR 96.6%. The score optimizing the sensitivity and specificity relationship for each index was as follows: IOTN (dental health component) 4; HLD 13; HMAR 12. These results indicate that the three occlusal indexes provided valuable information for determining orthodontic treatment need.
本研究的目的是比较三种正畸治疗需求咬合指数在预测18位正畸医生组成的小组对治疗需求的意见时的可靠性和有效性。使用了一组160个代表所有错颌类型的研究模型。这些模型用以下咬合指数进行评分：正畸治疗需求指数（IOTN）、致残性唇舌向偏差指数（HLD）和致残性错颌评估记录（改良HMAR）。使用正畸评估者的平均意见作为“金标准”来计算每个指数的诊断准确性或有效性。为每个指数绘制了受试者工作特征曲线。由曲线下面积百分比确定的总体诊断准确性在每个指数中相似：IOTN为98.6%；HLD为96.1%；HMAR为96.6%。使每个指数的敏感性和特异性关系达到最佳的分数如下：IOTN（口腔健康部分）为4；HLD为13；HMAR为12。这些结果表明，这三种咬合指数为确定正畸治疗需求提供了有价值的信息。
