Taner Lale, Uzuner Fatma Deniz, Çaylak Yağmur, Gençtürk Zeynep, Kaygısız Emine
Department of Orthodontics, Gazi University School of Dentistry, Ankara, Turkey.
Department of Biostatistics, Gazi University School of Medicine, Ankara, Turkey.
Turk J Orthod. 2019 Mar;32(1):1-5. doi: 10.5152/TurkJOrthod.2019.18048. Epub 2019 Mar 1.
This study aimed to determine cut-off points for the Peer Assessment Rating (PAR) index in relation with Angle classification to use as an alternative index for the treatment need assessment.
This study included 607 orthodontic patients aged between 9 and 18 years. Angle classification, PAR, and dental aesthetic index (DAI) scores were determined. The DAI was used as the gold standard to evaluate the subjects for treatment need. The receiver operating characteristics (ROC) analysis was used to evaluate the PAR index in relation to treatment need assessed by DAI.
The mean PAR scores for Class I, II, and III malocclusions and total sample were 17.54, 14.27, 18.7, and 20.04, respectively. The areas under the ROC of PAR scores in relation to the DAI assessment were found as 68.3% for the total sample, 66.6% Class I, 59.2% Class II, and 71.3% Class III malocclusions. For the total sample, the optimum cut-off PAR score was 14 in relation to DAI assessment. The cut-off scores for Class I, II, and III malocclusions were 13, 11, and 16, respectively, but considering psychosocial aspects, the recommended score is 14 for Class III.
The PAR index can be considered to have an acceptable level of validity for the assessment of orthodontic treatment need regarding Angle classification.
本研究旨在确定与安氏分类相关的同伴评估评分（PAR）指数的切点，以用作治疗需求评估的替代指标。
本研究纳入了607名年龄在9至18岁之间的正畸患者。确定了安氏分类、PAR和牙齿美学指数（DAI）评分。DAI被用作评估受试者治疗需求的金标准。采用受试者工作特征（ROC）分析来评估PAR指数与DAI评估的治疗需求之间的关系。
安氏I类、II类和III类错牙合畸形以及总样本的PAR平均得分分别为17.54、14.27、18.7和20.04。PAR评分与DAI评估相关的ROC曲线下面积在总样本中为68.3%，I类为66.6%，II类为59.2%，III类错牙合畸形为71.3%。对于总样本，与DAI评估相关的最佳PAR切点评分为14。I类、II类和III类错牙合畸形的切点评分分别为13、11和16，但考虑到心理社会因素，III类的推荐评分为14。
PAR指数在评估与安氏分类相关的正畸治疗需求方面可被认为具有可接受的效度水平。
