无尖牙全口义齿修复后肌电活动和咀嚼效能分析  

Analysis of electromyographic activity and chewing efficiency of zero-degree occlusal dentures after restoration

作　　者：钱海馨[1] 杨丹苓[1] 

机构地区：[1]上海交通大学医学院附属第九人民医院口腔修复科上海市口腔医学重点实验室,上海200011

出　　处：《上海交通大学学报（医学版）》2011年第12期1790-1792,共3页Journal of Shanghai Jiao tong University:Medical Science

摘　　要：目的观察无尖牙全口义齿修复后咀嚼功能的恢复情况。方法 20例全口无牙颌患者随机分为解剖式人工牙修复组和无尖牙修复组,每组10例。采用Oxford十通道肌电图仪对义齿初戴时和初戴1个月后的双侧颞肌和咬肌进行肌电测试,比较两种义齿的咀嚼效率。结果解剖式人工牙修复组与无尖牙修复组义齿初戴时和初戴后1个月后的肌电峰值电位比较,差异均无统计学意义(P>0.05);与初戴时比较,解剖式人工牙修复组初戴后1个月后扣齿运动时的肌电峰值电位显著提高(P<0.05),而无尖牙修复组则无明显改变(P>0.05)。无尖牙修复组初戴后1个月后的肌电活动静息期明显较初戴时缩短(P<0.05),且显著短于解剖式人工牙修复组初戴后1个月后的肌电活动静息期(P<0.05)。两组患者义齿初戴1个月后的咀嚼效率比较差异无统计学意义(P>0.05)。结论对于牙槽嵴条件差的患者,无尖牙修复与解剖式人工牙修复的咀嚼效能相当,且患者适应性较好。Objective To investigate the chewing function of zero-degree occlusal dentures after restoration. MethodsTwenty patients with complete dentures were divided into zero-degree occlusal dentures group and anatomic occlusal dentures group,with 10 patients in each group.Bilateral temporalis and masseter activities were examined by electromyography soon after denture placement and one month after denture placement,and the chewing efficiencies of these two dentures were compared. ResultsThere was no significant difference in peak electromyographic values between zero-degree occlusal dentures group and anatomic occlusal dentures group soon after denture placement and one month after denture placement（P0.05）.The peak electromyographic value of tapping teeth movement one month after denture placement was significantly higher than that soon after denture placement in anatomic occlusal dentures group（P0.05）,while there was no significant difference in zero-degree occlusal dentures group（P0.05）.The resting phase of electromyographic activity one month after denture placement was significantly shorter than that soon after denture placement in zero-degree occlusal dentures group（P0.05）,and was significantly shorter than that one month after denture placement in anatomic occlusal dentures group（P0.05）.There was no significant difference in the chewing efficiencies one month after denture placement between two groups（P0.05）. ConclusionZero-degree occlusal dentures can produce similar masticatory function as anatomic occlusal dentures and better adaptiveness for patients with unfavorable alveolar ridge.

关 键 词：无尖牙 全口义齿 肌电图 咀嚼效率 

分 类 号：R783.6[医药卫生—口腔医学]