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目的:比较复合树脂在分层固化时涂粘结剂与不涂粘结剂对充填效果的影响。方法:180例后牙面中龋Ⅰ类窝洞患牙180颗随机分为两组,每组各90颗。治疗组在树脂分层充填光照固化时在每层固化的树脂与牙体的邻接界面涂一层粘结剂然后固化。对照组仅在窝洞内第一层涂粘接剂后按常规处理。6个月和4年后复诊,检查患牙的充填体边缘着色、继发龋和充填体脱落情况,并对结果进行x2检验。结果:充填术6个月后有效率:治疗组为97.75%,对照组为95.51%,两组比较无显著性差异(P>0.05);术后4年有效率:治疗组为86.21%,对照组为73.56%,两组比较差异有显著性(P<0.05)。结论:在分层充填光照固化树脂时,在每层树脂与牙体邻接处再涂一层粘结剂固化,可减少微渗漏,从而增强树脂充填的临床效果。
OBJECTIVE: To compare the effect of composite resin coating with binder and non-binder on the filling effect when layered resin is cured. Methods: One hundred and eighty 180 cases of caries in type Ⅰ caries in posterior teeth facet were randomly divided into two groups with 90 in each group. The treatment group was cured with a resin delaminated and light-cured, and a layer of adhesive was applied to each adjacent layer of the cured resin to the tooth body and then cured. Control group only in the first hole in the nest after the adhesive coated by conventional treatment. At 6 and 4 years of follow-up, the affected tooth was examined for coloration, secondary caries and shedding of the filling, and the results were examined for x2. Results: Six months after filling, the effective rate was 97.75% in the treatment group and 95.51% in the control group, with no significant difference between the two groups (P> 0.05). The effective rate after 4 years was 86.21% in the treatment group Group was 73.56%, the difference between the two groups was significant (P <0.05). Conclusions: When stratified photofunctional resin is cured, a layer of adhesive is applied to the adjacent abutment of each layer of resin and tooth to reduce microleakage and enhance the clinical effect of resin filling.