Yang Y, Yatabe M, Ai M, Soneda K
Department of Prosthodontics, College of Stomatology, Beijing Medical University, China.
J Oral Rehabil. 2000 Oct;27(10):911-7. doi: 10.1046/j.1365-2842.2000.00567.x.
The effect of different types of canine guidance on the patterns of laterotrusive tracing at the incisal point and the relationship between the laterotrusive inclinations and the working side condylar movements were investigated in 42 young subjects. The subjects were divided into M and D groups according to their mesial and distal canine guidance, and were also divided into protrusive laterotrusion (PL) and retrusive laterotrusion (RL) groups according to their laterotrusive tracing patterns. No differences of laterotrusive inclinations and working side condylar movements were found between the M and D groups. The laterotrusive tracing pattern had no corresponding association with the type of canine guidance. In relation to the movements of the working side condyles, significant differences were found between the PL and RL groups. The condyles moved laterally and posteriorly in the RL group, but moved lateral and inferior in the PL one. The distance of condylar movement in the X direction was correlated with the horizontal and sagittal inclinations of laterotrusion. The results indicate that the movements of the working side condyle were affected functionally by the laterotrusion, but not by either the mesial or the distal type of canine guidance.
在42名年轻受试者中，研究了不同类型的尖牙引导对切缘点侧方运动轨迹模式的影响，以及侧方运动倾斜度与工作侧髁突运动之间的关系。受试者根据其近中尖牙引导和远中尖牙引导被分为M组和D组，又根据其侧方运动轨迹模式分为前伸侧方运动（PL）组和后退侧方运动（RL）组。M组和D组之间在侧方运动倾斜度和工作侧髁突运动方面未发现差异。侧方运动轨迹模式与尖牙引导类型没有相应的关联。关于工作侧髁突的运动，PL组和RL组之间发现了显著差异。RL组的髁突向外侧和后方移动，而PL组的髁突向外侧和下方移动。髁突在X方向上的移动距离与侧方运动的水平和矢状倾斜度相关。结果表明，工作侧髁突的运动在功能上受侧方运动的影响，但不受近中或远中尖牙引导类型的影响。
