Theusner J, Plesh O, Curtis D A, Hutton J E
Department of Restorative Dentistry, University of Munich, Germany.
J Prosthet Dent. 1993 Feb;69(2):209-15. doi: 10.1016/0022-3913(93)90142-b.
Three-dimensional condylar movements of 49 symptomatic and asymptomatic volunteers were recorded with a hinge axis tracing system axiograph during maximal opening, protrusion, and mediotrusion. The tracings displayed in sagittal and frontal planes were measured to evaluate biomechanics of the temporomandibular joint. The only differences in condylar tracings between symptomatic and asymptomatic groups were in the right joint, recorded in the sagittal plane during maximal opening, and the Bennett angle. The symptomatic group had a significantly longer condylar path and a smaller Bennett angle compared with the asymptomatic group. The results were interpreted as indications of adaptive morphologic instead of pathologic changes. The alterations in condylar tracings as an indicator of joint pathology should be considered cautiously.
使用铰链轴描记系统轴面描记仪记录了49名有症状和无症状志愿者在最大开口、前伸和侧方运动时的三维髁突运动。测量矢状面和额状面显示的描记图，以评估颞下颌关节的生物力学。有症状组和无症状组髁突描记的唯一差异在于右侧关节，在最大开口时矢状面记录的情况以及Bennett角。与无症状组相比，有症状组的髁突路径明显更长，Bennett角更小。这些结果被解释为适应性形态学改变而非病理改变的迹象。作为关节病理指标的髁突描记改变应谨慎考虑。
