Čimić Samir, Badel Tomislav, Šimunković Sonja Kraljević, Pavičin Ivana Savić, Ćatić Amir
Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia.
Department of Dental Anthropology, School of Dental Medicine, University of Zagreb, Zagreb, Croatia.
Ann Anat. 2016 Jan;203:47-51. doi: 10.1016/j.aanat.2015.09.001. Epub 2015 Sep 30.
The purpose of this study was to test the possible differences in centric slide values between different Angle's classes of occlusion. The study included 98 participants divided into four groups: Angle's class I, Angle's class II, subdivision 1, Angle's class II, subdivision 2 and Angle's class III. All recordings were obtained using an ultrasound jaw tracking device with six degrees of freedom. The distance between the maximum intercuspation (reference position) and the centric occlusion was recorded at the condylar level. Anteroposterior, superoinferior and transversal distance of the centric slide were calculated for each participant, and the data were statistically analyzed (analysis of variance and Newman-Keuls post hoc test). No statistically significant difference was found in the anteroposterior and transversal distance of the centric slide between tested groups, while Angle's class II, subdivision 2 showed smaller vertical amount of the centric slide compared to Angle's class I and class II, subdivision 1. None of the 98 participants showed coincidence of centric occlusion and maximum intercuspation. Our results suggest that coincidence of the maximum intercuspation with the centric occlusion should not be expected. Smaller extent of the vertical distance of the centric slide could be morphological and a functional expression characteristic of the Angle's class II, subdivision 2.
本研究的目的是测试不同安氏咬合分类之间正中滑动值的可能差异。该研究纳入了98名参与者，分为四组：安氏I类、安氏II类1分类、安氏II类2分类和安氏III类。所有记录均使用具有六个自由度的超声颌骨跟踪装置获得。在髁突水平记录最大牙尖交错位（参考位置）与正中咬合之间的距离。计算每位参与者正中滑动的前后向、上下向和横向距离，并对数据进行统计学分析（方差分析和纽曼-基尔斯事后检验）。在测试组之间，正中滑动的前后向和横向距离未发现统计学上的显著差异，而安氏II类2分类与安氏I类和安氏II类1分类相比，正中滑动的垂直量较小。98名参与者中没有一人正中咬合与最大牙尖交错位重合。我们的结果表明，不应期望最大牙尖交错位与正中咬合重合。正中滑动垂直距离较小可能是安氏II类2分类的形态学和功能表达特征。
