技工工艺对义齿基托适合性的影响

目的 :研究技工操作因素对义齿基托适合性的影响。方法 :将不同粉液比、充填时期、聚合温度、混合方式以及出盒温度成型的上颌半口义齿基托就位于标准模型上 ,用实体显微镜 (精度 0 .0 1mm )测量其与标准模型间的间隙 ,数据经t检验统计处理。结果 :在不同粉液比组、不同充填时期组、不同聚合温度组和不同出盒温度组均存在显著差异 (P <0 .0 5)。结论 :义齿基托适合性受到单体含量、充填时期、聚合温度和出盒温度的影响

An experimental study on denture base adaptation

Objective: To study the denture base adaptation in fl uenced by technical factors. Methods: Thirty six maxilla ry denture bases were fabricated by different conditions of monomer content ,res in stage, polymerization temperature, mixing and cooling temperature conditions respectively. The gap between stone cast and acrylic resin base was measured wi th a stereoscopic microscope with a precision of 0.01 mm at five referential pos itions in each section. The data were submitted to t test. Resul ts: There was statistical significant difference ( P <0.05) in the dimensional change values among the samples fabricated with the varibles of mon omer content,resin stage,polymerization temperature and cooling temperature. Conclusions: The data base adaptation s influenced by the monomer content,resin stage,polgmer ization temperature and cooling temperature.