短牙弓对患者颞下颌关节的影响
Medical Journal of Wuhan University(2014)
Abstract
目的:研究短牙弓患者颞下颌关节的负荷以及短牙弓与颞下颌关节紊乱的关联.方法:通过CT扫描获得头面部原始数据,建立三维有限元模型,比较完整牙弓和短牙弓的颞下颌关节应力和负荷;临床上收集短牙弓病例,根据患者的修复意愿分成两组(活动义齿RPD组和短牙弓SDA组),同时收集完整牙列的患者作为对照组(全牙弓CDA组),比较3组患者的颞下颌关节紊乱相关体征.结果:有限元分析发现随着牙弓的缩短,颞下颌关节应力和负荷增大;临床检查发现短牙弓组颞下颌关节紊乱体征的阳性率增加,但3组之间没有统计学差异.结论:短牙弓虽然不是颞下颌关节紊乱的危险因素,但是要关注短牙弓患者颞下颌关节的变化.
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Key words
shortened dental arches,temporomandibular joint
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