两种后牙树脂充填窝洞的边缘微渗漏观察  

Marginal Microleakage of Two Kinds of Composite Resins.

作　　者：王清[1] 邓婧[1] 潘克清[1] 范春[1] 

机构地区：[1]青岛大学医学院附属医院口腔科,山东青岛266003

出　　处：《口腔医学研究》2011年第1期68-70,共3页Journal of Oral Science Research

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.

关 键 词：微渗漏 复合树脂 自酸蚀 全酸蚀 

分 类 号：R783.3[医药卫生—口腔医学]