He H, Fu M
Department of Orthodontics, Peking University School of Stomatology, Beijing 100081, China.
Zhonghua Kou Qiang Yi Xue Za Zhi. 2001 Sep;36(5):367-70.
To study changes of condyle position and occlusion between centric jaw relation and maximum intercuspation positions.
The power centric registration advocated by Roth was used to take centric relation bite registration for 50 patients (25 Class I and 25 Class II, Division 1) and diagnostic models were mounted and analysed with Panadent articulator and condyle position indicator.
Nearly all patients had CR-MI differences in all three planes of space. 70% of the sagittal displacement was within 2.0 mm and 87% of the transverse displacement was within 1.0 mm. Most of the condyles moved posteriorly and inferiorly. 65% of the initial contacts in CR occured on the most posterior molar on single side. Correlation was found between some variables of condylar displacement and occlusion changes. No significant difference was observed in condylar position and occlusion changes between Class I and Class II, Dvision 1 patients.
The occlusion in centric jaw relation should be analysed before treatment to reveal the disharmony between occlusion and jaw position.
研究髁突位置及正中颌位与最大牙尖交错位之间咬合关系的变化。
采用Roth倡导的动力正中关系记录法，对50例患者（25例I类和25例II类1分类）进行正中关系咬合记录，并使用Panadent咬合架和髁突位置指示器对诊断模型进行上架和分析。
几乎所有患者在空间的三个平面上均存在正中关系位与最大牙尖交错位的差异。矢状向位移的70%在2.0mm以内，横向位移的87%在1.0mm以内。大多数髁突向后下移动。正中关系位时65%的初始接触发生在单侧最后一颗磨牙上。发现髁突位移的一些变量与咬合变化之间存在相关性。I类和II类1分类患者之间在髁突位置和咬合变化方面未观察到显著差异。
治疗前应分析正中颌位的咬合关系，以揭示咬合与颌位之间的不协调。
