LZB-GC抗菌剂对釉质黏结树脂黏结性能影响的研究

Effects of LZB-GC on adhesive properties of dental enamel gonding resin

目的:探讨载银磷酸锆抗菌剂(LZB-GC)对釉质黏结树脂黏结性能的影响。方法:选取正畸拔除的上颌第一前磨牙80个,随机分成5组,分别用含1wt%、2wt%、3wt%、5wt%LZB-GC的釉质黏结树脂黏结托槽,不含LZB-GC的釉质黏结剂作为对照组,样本在室温下水浴24h后,用DY35型万能测试机测试托槽抗拉黏结力,托槽脱落后用16倍放大镜观察去黏结界面釉质表面残留的黏结材料量,记录黏结残留指数(Adhesive Remnant Index,ARI)。结果:5组离体牙托槽抗剪切黏结强度值之间、黏结材料残留指数之间的差别均无统计学意义(P>0.05)。结论:在釉质黏结树脂中的添加<5wt%LZB-GC抗菌剂时,不影响其对离体牙的托槽黏结强度。

AIM：To evaluate the effect of LZB-GC on the adhesive property of dental enamel bonding resin（DEBR）.METHODS：Eighty extracted first maxillary premolars were randomly divided into 5 groups.Edgewise brackets were bonded to these premolars by DEBR containing 0,1%,2%,3%,5%（wt/v） LZB-GC respectively.After bonding the specimens were stored in water at room temperature for 24 hours.DY-35 universal testing machine was used to test the tensile bond strength.The adhesive residual index（ARI） of bonding interface was recorded.RESULTS：There was no statistical difference in the shear bond strength and ARI among the five groups.CONCLUSION：The addition of 1%-5%（wt/v） LZB-GC antibacterial agent in DEBR has no effect on the tensile bond strength of metal brackets bonded to ex vivo human enamel.