【摘要】 目的　探讨偏侧咀嚼对大鼠颞骨关节窝位置的影响。方法　通过拔除大鼠右侧下颌磨牙建立偏侧咀嚼动物模型 ,观察不同时间长度偏侧咀嚼对大鼠颞骨关节窝的矢状向和水平向位置的影响。结果　偏侧咀嚼 1、2、4个月的大鼠非咀嚼侧颞骨关节窝前缘与对侧相比有向前的移位 ,偏侧咀嚼 2、4个月的大鼠非咀嚼侧颞骨关节窝前缘和对照组同侧相比有向前的移位 ,而咀嚼侧关节窝未发现明显变化。偏侧咀嚼 2、4个月的大鼠非咀嚼侧颞骨关节窝有向内的移位。各个时间实验组大鼠咀嚼侧关节窝与对照组对比没有发现有统计学意义的改变。结论　偏侧咀嚼会造成非咀嚼侧颞骨关节窝向前 ,向内的改建。偏侧咀嚼可能是颞下颌关节紊乱症的病因之一更多还原

【Abstract】 Objective\ To investigate the effect of unilateral mastication on glenoid fossae by means of animal experiment.Methods\ An animal model of unilateral mastication was established by extracting right mandibular molars of Wistar rats. The rats were sacrificed in different period to examine the location changes of glenoid fossae through sagittal and horizontal plane.Results\ The anterior points of glenoid fossae in non_masticatory side of experimental groups were more anterior than those in masticatory sides. The anterior points of the glenoid fossae of non_masticatory sides in experimental groups were more anterior than those of the same sides in the control groups after inducing unilateral mastication for two and four months. After inducing unilateral mastication for two and four months, the anterior and the posterior points of the glenoid fossae of non_masticatory sides in experimental groups became closer to the midline by comparison with masticatory sides as well as the same sides in control groups. Locations of glenoid fossae in masticatory sides showed no changes in comparison with the same side of the control groups.Conclusion\ The forward and inward remodeling of the glenoid fassae can be observed after unilateral mastication was induce to the non_masticatory sides of experimental rats. It is concluded that unilateral mastication might be one of the etiologic factor of temporomandibular joint disorders.\;更多还原