Analyses of Masticatory Efficiency and Stomatognathic Function in Elderly Complete Denture Wearers

1991年，我们用肌电图仪和咬合力测量系统对全口义齿佩戴者的义齿功能进行了评估。1992年，应用下颌运动描记仪对5例老年全口义齿佩戴者的咀嚼活动和下颌运动进行了同步记录。对使用旧义齿和新义齿的受试者从开始咀嚼花生到咀嚼结束时的下颌运动、咀嚼运动和咀嚼活动进行了评估。本研究得到了以下结果：1)使用新义齿增加了计算的咬合力；2)比较了10名自然牙列的10名全口义齿佩戴者的咀嚼活动和咀嚼周期。在所有病例中，全口义齿佩戴者的咀嚼活动和周期次数都比天然义齿患者更频繁。3)5名老年全口义齿佩戴者同时记录到咀嚼肌电和下颌运动。使用新型义齿后，下颌的张开、合拢和侧向运动均更加稳定，垂直运动速度也有所增加。此外，在咀嚼过程中观察到咬肌和颞肌的协调。

In 1991, We investigated evaluations of denture functions using the electromyography and the biting force measuring system in complete denture wearers. In 1992, masticatory activities and mandibular movements were registrated at the same time by use of the Mandibular Kinesiograph in five elderly complete denture wearers. Those subjects used old and new denture were evaluated to the mandibular movement, the masticatory movement and the masticatory activity from the start of the mastication of peanuts to the end of the swallow.We obtained the following results in this research.1) The calculated biting force were increased by use of new denture.2) Masticatory activities and cycle times during mastication of three test foods ( kamaboko, silverberry jelly and peanuts ) were compared ten complete denture wearers with ten natural dentitions. In all cases, Masticatory activities and cycle times were frequent in complete denture wearers than natural dentitions.3) Masticatory electromyogram and mandibular movement were registrated at the same time in five elderly complete denture wearers. Both opening, closing and lateral mandibular movement were more stable by use of new denture, and vertical velocity was also increase. Furthermore, coordination of masseter and temporal muscles were observed during mastication.