Yang Y, Yatabe M, Ai M, Soneda K
Department of Prosthodontics, College of Stomatology, Beijing Medical University, China.
J Oral Rehabil. 2001 Jan;28(1):64-7. doi: 10.1046/j.1365-2842.2001.00189.x.
The purpose of this study was to investigate the association of temporomandibular joint (TMJ) clicking with the types of canine guidance, the tracing patterns of mandibular laterotrusion and, especially, with the movements of the working side condyle. In a young subject group, the movements of left and right mandibular laterotrusion were measured at the incisal and the lateral pole point of the working side condyle. All samples were divided into one of two groups according to the mesial (M) or distal (D) canine guidance. They were also divided into protrusive laterotrusion (PL) or retrusive laterotrusion (RL) groups according to the tracing patterns. The incidence of clicking was 23.8% in all 84 TMJs. There was no significant difference between the M and the D groups. However, clicking occurrence was significantly higher in the RL than in the PL group (P<0.05). The condyles in clicking joints moved more posterior in ipsilateral laterotrusion than the condyles in non-clicking joints. The condyles in RL also moved more posterior than those in PL. It is suggested that the posterior movement of the working side condyle in RL has a strong relationship with the internal derangement of the TMJ. However, it is not related to the type of canine guidance.
本研究的目的是调查颞下颌关节（TMJ）弹响与尖牙引导类型、下颌侧方运动轨迹，尤其是与工作侧髁突运动之间的关联。在一个年轻受试者组中，测量了工作侧髁突切缘点和外侧极点处左右下颌侧方运动的情况。所有样本根据近中（M）或远中（D）尖牙引导分为两组之一。它们还根据运动轨迹分为前伸侧方运动（PL）或后退侧方运动（RL）组。在全部84个颞下颌关节中，弹响的发生率为23.8%。M组和D组之间无显著差异。然而，RL组的弹响发生率显著高于PL组（P<0.05）。弹响关节的髁突在同侧侧方运动中比无弹响关节的髁突向后移动更多。RL组的髁突也比PL组的髁突向后移动更多。提示RL中工作侧髁突的向后运动与颞下颌关节的内部紊乱有密切关系。然而，它与尖牙引导类型无关。
