摘要
目的:观察并比较3MP90和P60两种后牙树脂与3M第七代自酸蚀粘接剂联合使用充填窝洞的边缘微渗漏情况。方法:40颗健康离体后牙随机分为A、B、C、D 4组,颊面正中制备5 mm×3 mm×2 mm的箱状洞型。其中A、B组用P90,C、D组用P60树脂分层充填;A、C组用Adper EasyTM one,B、D组用Single bond 2。标本经温度循环后,1%亚甲基蓝溶液染色48 h,显微镜下观察每颗牙3个剖面(近中、远中及正中)6个位点的染料渗入深度,采用计量资料两样本均数比较的t检验进行统计学分析。结果:A组与C组,B组与D组之间微渗漏有统计学差异(P<0.05);A组与B组,C组与D组之间微渗漏无统计学差异。结论:P90树脂的边缘封闭性优于P60。
Objective： To compare the marginal microleakage of cavities filled separately with 3MP90 and P60 composite resins.Methods： Box-like cavities（5mm×3mm×2mm） were prepared on the facial surface of 40 freshly extracted molar teeth.Teeth were randomly divided into 4 groups with 10 teeth each.Cavities of group A and B were restored with composite P90 while group C and D with P60.Adper EasyTM one was applied for group A and C while Single bond 2 for group B and D.After the thermocycling,all teeth were stained with methylene blue for 48h.The depth of methylene penetration was measured under stereomicroscope at six points.T-test was used for statistical analysis.Results： There were significant differences between group A and C as well as B and D（P0.05）.The microleakage between group A and B,group C and D had no significant statistical difference.Conclusion： The marginal seal of cavities filled with P90 is better than that with p60.
出处
《口腔医学研究》
CAS
CSCD
北大核心
2011年第1期68-70,共3页
Journal of Oral Science Research
关键词
微渗漏
复合树脂
自酸蚀
全酸蚀
Microleakage Composite resin Self-etch Total-etch
