【摘要】 目的比较研究白色假丝酵母菌在两种不同义齿基托材料表面黏附情况及材料表面粗糙度对黏附量的影响。方法将两种义齿基托材料制备成粗糙度不同的标准试样,用白色假丝酵母菌(ATCC 10261)菌液对各试样黏附后脱菌、稀释、培养计数,分析白色假丝酵母菌对试件表面黏附。结果玻璃面组中,加热固化型基托树脂白色假丝酵母菌黏附量为15.33±2.80,Valplast弹性义齿材料白色假丝酵母菌黏附量为13.67±2.94;石膏面组中,加热固化型基托树脂白色假丝酵母菌黏附量为22.67±4.84,Valplast弹性义齿材料白色假丝酵母菌黏附量为21.17±3.31;两种义齿基托材料的白色假丝酵母菌黏附量有差异,对制备成不同的粗糙度同一材料表面,白色假丝酵母菌黏附量差异均有统计学意义(P<0.01)。结论义齿基托材料本身性能及表面粗糙度对白色假丝酵母菌的黏附均有影响。更多还原

【Abstract】 OBJECTIVE To assess the adherence ability of Candida albicans to two denture base resins with different surface roughness.METHODS In adhesion assays,two denture base resins were made into standard test samples with different surface roughness.Suspension of C.albicans(ATCC 10261) strain was used to adhere on the test samples,and cultured to observe the adhesive effect of a mixed salivary pellicle with Candida to these surfaces.RESULTS In glass surface group,the amount of C.albicans adhering to heat-curing denture base resins was 15.33±2.80,and the amount of C.albicans adhering to Valplast flexible denture resin was 13.67±2.94;In gypsum surface group,the amount of C.albicans adhering to heat-curing denture base resins was 22.67±4.84,and the amount of C.albicans adhering to Valplast flexible denture resin was 21.17±3.31.Significantly greater adhesion of C.albicans to rough surfaces rather than smooth surfaces of the same material was found,at the same time C.albicans had different adhesive ability on different denture base resins(P<0.01).CONCLUSIONS Rougthness of the surface affects the adhesion of C.albicans on the denture base resins as well as the characteristics of the material itself.The rough surface promotes C.albicans adhesion to the smooth one.更多还原