Polident义齿清洁剂对义齿基托树脂性能的影响  

Effect of Polident denture cleansers on the properties of heat-polymerized denture base acrylic resin

作　　者：袁慎坡[1] 林红[1] 潘硕[1] 娄丽丽[1] 徐永祥[1] 

机构地区：[1]北京大学口腔医学院.口腔医院口腔材料研究室,北京100081

出　　处：《北京大学学报（医学版）》2012年第6期946-949,共4页Journal of Peking University:Health Sciences

摘　　要：目的:以Polident为例,研究义齿清洁对义齿基托树脂性能的影响。方法:选择热凝基托树脂分别制作20个圆片试样(50.0 mm×0.5 mm)、24个与义齿的粘接试样和40个矩形条状试样(34.0 mm×13.5 mm×1.3 mm)。将试样随机分为空白组、空气组、蒸馏水组和清洁剂组,4组试样分别采用不同的处理方法:空白组试样不经任何处理;空气组试样在人工唾液中浸泡16 h,在空气中暴露放置8 h,共做30个循环;蒸馏水组试样在人工唾液中浸泡16 h,在蒸馏水中放置8 h,共做30个循环;Polident清洁剂组试样在人工唾液中浸泡16 h,在义齿清洁剂溶液中放置8 h,共做30个循环。对处理后的试样进行色稳定性、挠曲强度、与合成树脂牙的粘接性能测试,对试验结果进行分析。结果:4组试样经处理后,色稳定性及与义齿的粘结强度的差异无统计学意义;对4组试样的挠曲强度进行统计学分析发现,空白组与空气组、蒸馏水组的差异无统计学意义,空气组与Polident清洁剂组的挠曲强度差异有统计学意义。结论:经Polident处理后,义齿基托树脂的机械性能与空白组相比有所改变,与其他处理方式相比差异无统计学意义。Objective：To study the change in properties of heat-polymerized acrylic resin after using one denture cleanser.Methods：In the study,20 disk-shaped（50.0 mm×0.5 mm） and 40 rectangular（34.0 mm×13.5 mm×1.3 mm） specimens prepared from heat-polymerized acrylic resin were randomly divided into four groups.The specimens were exposed to one of the three treatments as follows：Group 1 was without any treatment,Group 2 was exposed to air,Group 3 to distilled water,and Group 4 to Polident.The 4 exposures lasting 8 hours were conducted daily and repeated for 30 days.The color stability of heat-polymerized acrylic resin was determined by visual methods.The flexural strength and bonding strength of acrylic resin were measured using a universal testing machine.All the results were analyzed using ANOVA.Results：The flexural strength test of acrylic resin demonstrated significant differences between Group 4 and Group 1（P0.05）,there were no significant differences among Group 1,Group 2 and Group 3.No significant differences were found in other properties of the test materials.Conclusion：Long-term use of polident could alter the physical and mechnical properties of heat-polymerized acrylic resin.It may be related to the accelerating aging of resins caused by certain chemicals in denture cleansers.Polident may have some adverse effects on denture materials for decreasing flexural strength of heat-polymerized acrylic resin after 30-day immersion.

关 键 词：义齿清洁剂 义齿基托 复合树脂类 牙应力分析 

分 类 号：R783.6[医药卫生—口腔医学]