打磨与浸水对全口义齿后腭边缘封闭区适合性的影响  

The effects of trimming and imersion in water on posterior palatal brim adaptation of complete denture

作　　者：覃峰[1,2] 赵云凤[1,2] 王敏 

机构地区：[1]广州中山医科大学光华口腔医院 [2]华西医大口腔医学院

出　　处：《实用口腔医学杂志》1999年第2期118-119,共2页Journal of Practical Stomatology

摘　　要：目的：研究打磨与浸水对上颌义齿后腭边缘封闭区适合性的影响。方法：以快速水浴聚合法制作全口义齿基托，并于开盒后、磨除基托边缘０．５ｍｍ后，基托在（２２±２）℃浸泡２ｄ后及一周后用读数显微镜测量后腭边缘适合性。结果：打磨引起基托残余应力释放，基托适合性下降（Ｐ＜０．０５）。浸水２ｄ后基托适合性继续下降（Ｐ＜０．０５），浸水１周后，与浸水２ｄ时相比无统计学差异（Ｐ＞０．０５）。结论：打磨引起的残余应力释放，但随时间延长越来越小，吸水膨胀有一定补偿作用。短期快速聚合法对基托适合性有不利影响。Objective:To investigate the effects of trimming and water immersion on the brim adaptation of upper dentures.Methods:Complete dentures were made with water bath curing method.The dentures were deflasked,brim trimmed and immersed into water (at 22±2)℃ for 2 and 7 days respectively,then the adaptation of the back brim of the dentures was measured with a measuring microscope.Results:The adaptation of the dentures decreased after brim trimming ( P < 0.05 ) and continued decreace after 2 day water immersion ( P <0.05);7 day immersion showed the same effect as 2 day immersion( P >0.05). Conclusion:Trimmg may lead to the deformation of dentures because of the release of stress during curing.Water immersion may compensate for the deformation because of water absorption.Rapid curing is unfavourable to the adaptation of dentures.

关 键 词：上颌全口义齿 义齿 基托 抛光 浸渍 

分 类 号：R783.6[医药卫生—口腔医学] R783.2[医药卫生—临床医学]