单侧游离端义齿咀嚼效能的测定和分析

采用吸光度法测定３０例肯氏Ⅱ类牙列缺损患者戴用单侧游离端可摘义齿前及用后１周，１月，３月的咀嚼效能。结果表明；１肯氏Ⅱ类牙列缺失患者咀嚼效能明显低于正常对照组，失牙越多，单侧丧失咀嚼效能越明显，失牙较少时，机体可通过代偿维持吞咽反射前的儿能。２．戴用义齿后，患者的咀嚼效能随戴用时间的增长而逐步提高。

Determination and analysis of masticatory performance of unilateral free-end removable partial denture]

In this study, the changes of masticatory performance of 30 cases (18 males, 12 females) wearing unilateral free-end removable partial dentures were studied before wearing, 1 week, 1 month and 3 months after wearing by using the light absorption method and peanuts as test food. The results showed: 1. The masticatory performance before wearing unilateral free-end removable partial denture was predominantly lower than that of normal control group. The more teeth lost, the lower unilateral masticatory performance was observed. When the number of lost teeth was few, patients compensated and maintained their masticatory performance before swallowing. 2. The masticatory performance was gradually improved with wearing denture period increasing. 3. Factors relating to the masticatory performance were sex, the extent of alveolar bone resorption and age. Except sex, the extent of alveolar bone resorption and age factors were negative correlative with the masticatory performance; However the number of occlusal units lost, chewing habit and the kinds of denture base materials had no relation to the masticatory performance.