Department of Occlusion, Fixed Prosthodontics and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil.
Braz Oral Res. 2012 Jan-Feb;26(1):29-35. doi: 10.1590/s1806-83242011005000017.
The magnitude of occasional discrepancies between the centric relation and maximal intercuspation positions remains a controversial subject. This study quantitatively evaluated the possible discrepancies in the condyle/mandibular fossa relationship between these positions using cone-beam computed tomography. Twenty young and asymptomatic volunteers were distributed equally into normal occlusion and Angle Class I, II and III malocclusion groups. They were submitted to one tomographic scan in maximal intercuspation and one in centric relation. Measurements were performed on lateral and frontal cuts of the patients' temporomandibular joints, and the data collected were compared using Student's t test at a significance level of 5%. The results showed that there were no statistically significant differences between the centric relation and maximal intercuspation positions in young and asymptomatic patients with practically intact dentitions using cone-beam computed tomography.
偶尔出现的正中关系位和最大牙尖交错位之间的差异程度仍然是一个有争议的话题。本研究使用锥形束 CT 定量评估了这两个位置之间髁突/下颌窝关系中可能存在的差异。20 名年轻且无症状的志愿者被平均分配到正常咬合和 Angle 分类 I、II 和 III 错颌组。他们分别在最大牙尖交错位和正中关系位进行了一次锥形束 CT 扫描。在患者颞下颌关节的侧位和正位片上进行了测量，并使用学生 t 检验在 5%的显著性水平上比较了收集到的数据。结果表明，在具有基本完整牙列的年轻且无症状的患者中，使用锥形束 CT 时，正中关系位和最大牙尖交错位之间没有统计学上的显著差异。
