【摘要】 目的:比较4种不同消毒剂对义齿基托树脂性能影响。方法:将长方体基托树脂试件75片,随机分成5组,每组15片,自来水浸泡(A组),0.12%洗必泰浸泡(B组),75%酒精浸泡(C组),保丽净假牙清洁片溶液浸泡(D组),0.5%碘伏浸泡(E组),观察并检测试件颜色(ΔE)、表面粗糙度(Ra)、表面微观形貌、弯曲强度测试、吸水值和溶解值的改变。结果:不同消毒剂处理后基托树脂试件颜色的改变(ΔE)、表面粗糙度(Ra)差异有统计学意义(P<0.05)。C组基托树脂试件的表面可观察到明显的裂纹,较其他组有明显的差异;E组有明显染色现象,B组可观察到轻微染色现象。与A组相比,C组的吸水值和溶解值差异有统计学意义(P<0.05)。各组基托树脂的弯曲强度与A组比较,差异均无统计学意义(P>0.05)。结论:保丽净假牙清洁片溶液浸泡对树脂试件表面粗糙度、吸水度、溶解度、弯曲强度等性能影响均较小,推荐作为义齿树脂基托的消毒方法。更多还原

【Abstract】 Objective: To compare the effects of four kinds of disinfectants on the properties of denture base resins.Methods: Seventy-five rectangular samples were randomly divided into 5 groups( each group of 15 samples) that were immersed in running water( group A),0. 12% chlorhexidine( group B),75% alcohol( group C),Polident denture cleanser solution( group D),and 0. 5% iodine volts soak( group E),respectively. The surface roughness( Ra),color change( ΔE),surface morphology,flexural strength,water absorption and solubility of the samples were detected. Results: The color( ΔE) and surface roughness( Ra) of group B,E changed significantly,compared with group A( P < 0. 05). Obvious cracks can be observed on the surfacial microstructure of the group C,compared with other 4 groups( P < 0. 05). Group E exhibited obvious dyeing,and group B showed minor dyeing. Group C showed significant water absorption and solubility value,compared with group A( P < 0. 05). There was no significant difference in bending strength among all groups. Conclusion: Polident denture cleanser showed least effects on the color stability,surface roughness,flexural strength,water absorption and water solubility of denture resins,and could been recommended for denture cleaning.更多还原