Department of Rehabilitation Sciences, Universidade Nove de Julho, Brazil.
Eur J Paediatr Dent. 2012 Jun;13(2):97-100.
The aim of the present study was to perform a comparative analysis of occlusal contact points in children with and without signs and symptoms of Temporomandibular Disorders (TMD).
Cross-sectional study. One hundred fifty children between 6 and 14 years of age were evaluated using the Helkimo questionnaire and a clinical exam. The occlusal contact points in each child were recorded during maximal intercuspation with the aid of carbon strips. Digital photographs were taken of the upper and lower arches before and after recording the occlusal contacts. The number of contact points between sides were compared and recorded on individual charts (occlusograms).
Student's t-test and Pearson's chi-square test were used for the statistical analysis, with the level of significance set at 0.05, which revealed no statistically significant differences between genders. The Student's t-test revealed a statistically significant difference in the mean number of occlusal contact points between the participants with and without TMD, with a higher number of contact points among those without TMD. There was no significant difference between sides. RESULTS The results of this study show a difference in the number of occlusal contact points in centric occlusion between children with and without TMD. CONCLUSION Regardless of the degree of severity, the number of occlusal contact points is lower among children with TMD.
本研究旨在对有和无颞下颌关节紊乱病（TMD）症状和体征的儿童的咬合接触点进行对比分析。
横断面研究。对 150 名 6 至 14 岁的儿童使用 Helkimo 问卷和临床检查进行评估。在最大咬合时使用碳条记录每个儿童的咬合接触点。在记录咬合接触点之前和之后，对上、下颌弓拍摄数字照片。将两侧的接触点数进行比较并记录在个人图表（咬合图）上。
使用学生 t 检验和 Pearson 卡方检验进行统计分析，显著性水平设为 0.05，结果显示性别之间无统计学差异。学生 t 检验显示 TMD 组和无 TMD 组之间在正中咬合时的平均咬合接触点数存在统计学差异，无 TMD 组的接触点数较高。两侧之间无显著差异。结果：本研究结果显示 TMD 儿童和无 TMD 儿童在正中咬合时的咬合接触点数存在差异。结论：无论 TMD 严重程度如何，TMD 儿童的咬合接触点数都较低。
