【摘要】 目的:通过测量戴稳定垫前、后颞下颌关节腔内压力的变化,检验稳定垫治疗对颞下颌关节腔内压力的影响。方法:用自行开发的多导颞下颌关节腔内压力测试仪,对22例患者进行戴稳定垫前、后的颞下颌关节腔内压力穿刺测量,直接获取关节腔内的压力数值,并对戴稳定垫前、后正中咬合和大张口状态下的压力数值用配对t检验进行统计比较分析。结果:戴稳定垫前正中咬合和大张口状态的颞下颌关节腔内压力分别是(61.3±48.5)mmHg(1mmHg=0.133kPa)和负压(33.2±34.2)mmHg;戴稳定垫后正中咬合和大张口状态的颞下颌关节腔内压力为(39.5±24.5)mmHg柱和负压(36.3±25.3)mmHg。正中咬合状态下的戴稳定垫后关节腔内压力值小于戴稳定垫前压力值,两者比较差异有统计学意义(P<0.05);大张口状态下的压力数值在戴稳定垫前、后差异没有统计学意义(P>0.05)。结论:戴稳定垫能降低正中咬合状态下颞下颌关节腔内压力。更多还原

【Abstract】 Objective: To find out the influence of stabilization occlusal splint on intra-articular pressure of the temporomandibular joint. Methods: A muti-channel measuring and analysis system for intra-articular pressure of the temporomandibular joint was developed in this study. Twenty-two subjects were selected to detect the intra-articular pressure of the temporomandibular joint before and after wearing stabilization splint. Results: Before splint wearing, the intra-articular pressure of the temporomandibular joint at intercuspal occlusion status was 61.3±48.5 mm Hg (1 mm Hg=0.133 kPa), the negative pressure at open mouth status was 33.2±34.2 mm Hg. After splint wearing, the pressure at intercuspal occlusion status was 39.5±24.5 mm Hg, the negative pressure at intercuspal at open mouth status was 36.3±25.3 mm Hg. The intra-articular pressure of the temporomandibular joint after wearing splint was significantly lower than the pressure before splint was used, the pressure of mouth opening status was stable before and after splint was used. Conclusion: Stabilization occlusal splint can reduce the intra-articular pressure of the temporomandibular joint.更多还原