表面封闭剂对复合树脂充填体边缘封闭性的临床效果

Efficacy of surface sealant in marginal seal of composite resin restorations

目的观察表面封闭剂对树脂充填Ⅴ类洞的边缘封闭效果。方法门诊选择60例有楔状缺损或龋坏的患者,用自身对照方法分为实验组和对照组,所有病例常规使用Z250TM树脂进行充填,后修形抛光。实验组常规树脂充填后酸蚀复合树脂和洞缘周围牙釉质2 mm 15 s,冲洗吹干后涂表面封闭剂,光照20 s;对照组不做特殊处理。分别于充填后3个月、6个月及12个月对充填体进行评价。结果实验组和对照组修复体在固位及色泽协调性上无统计学差异(P>0.05),而实验组出现边缘着色、边缘欠密合、表面形态不连续及继发龋的病例明显少于对照组,差异有统计学意义(P<0.05)。结论表面封闭剂对树脂充填的Ⅴ类洞有较好的边缘封闭性。

Objective To explore the effects of surface sealant on the marginal seal of class V composite resin restorations. Methods Sixty patients with wedge-shaped defect or caries of teeth were enrolled. The self control approach was adopted to assign the teeth into two groups. All the teeth with wedge-shaped defect or caries were filled with Z250TM, and then polished. The teeth in experiment group received a layer of Fortify Plus surface sealant and were light-irradiated for 20 s;while the teeth in control group were not treated on the surface. Then the clinical efficacy for the restorations was assessed respectively at months 3,6,12 after the treatment. Results No significant difference was found between two groups in terms of retention and color compatibility （ P 〉 0.05 ）, but the incidences of edge coloring, poor marginal integrity and poor surface appearance, and secondary caries in expriment group were lower than in control group （P 〈 0.05）. Conclusion Surface sealant can have the better marginal integrity in resin composite restorations.