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The perception of dental aesthetics and orthodontic treatment need by 10- to 11-year-old children

机译：10至11岁儿童对牙齿美学和正畸治疗需求的认识

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The aim of the study was to assess the perception of dental aesthetics and treatment need in 10- to 11-year-old children using the Aesthetic Component (AC) of the Index of Orthodontic Treatment Need. Subjects were asked to rank the 10 AC photographs in order from the one which looked the best set of teeth to the worst. They were also asked to say whether or not the teeth in each picture required orthodontic treatment. Three hundred and seventy-nine children completed the first task but only 369 were able to decide on treatment need for every picture. Girls ranked the pictures in the order 1, 3, 2, 4, 5, 6, 7, 9, 8, and 10; the boys' sequence was 1, 2, 3, 4, 5, 6, 9, 7, 8, and 10. Significant differences were found between girls and boys for the median rankings of photographs 2 (P < 0.02), 3 (P < 0.004), 5 (P < 0.03), 6 (P < 0.05), and 8 (P < 0.01). The sequence selected by the total sample was similar to that chosen by boys. The cut-off point for which photograph indicated a need for treatment was grade 4 (54.5 per cent), which was 34.7 per cent above the grade 3 score of 19.8 per cent. Three pairs of photographs were allocated similar median ranks, two and three received a rank of 3; five and six a rank of 6; and seven and nine a rank of 7. It is therefore possible that the number of AC grades could be reduced to the five photographs: 1, 4, 6, 8, and 10 in order to simplify the index without reducing its reliability. This premise could be tested by presenting firstly the five photographs and then the 10 on a separate occasion to see how the same participants rated the two sets of pictures.
机译：该研究的目的是使用正畸治疗需要指数的审美成分（AC）评估10至11岁儿童对牙齿美学和治疗需求的看法。受试者被要求对10张AC照片进行排序，从看起来最好的牙齿到最差的牙齿。他们还被要求说出每张照片中的牙齿是否需要正畸治疗。 379名儿童完成了第一项任务，但只有369名儿童能够决定每张照片的治疗需求。女孩按1、3、2、4、5、6、7、9、8和10的顺序排列图片;男孩的顺序为1、2、3、4、5、6、9、7、8和10。在照片中位数2（P <0.02），3（P <0.004），5（P <0.03），6（P <0.05）和8（P <0.01）。总样本选择的序列与男孩选择的序列相似。照片表明需要治疗的临界点是4年级（54.5％），比3年级19.8％的分数高出34.7％。为三对照片分配了相似的中位等级，其中两三张获得了3分。五个和六个等级为6;七和九个等级分别为7。因此，有可能将AC等级的数量减少到五张照片：1、4、6、8和10，以便简化索引而不降低其可靠性。可以通过先展示五张照片，然后再展示十张照片来检验这一前提，以查看相同的参与者如何评价这两套图片。

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