无机抗菌剂的添加对新型自酸蚀处理剂黏结性能和颜色稳定性的影响

Influence of incorporation of inorganic antibacterial agents on bonding characteristics and color stability of an experimental self-etching primer

目的:测试无机抗菌剂的添加对新型自酸蚀处理剂ESP黏结性能和颜色稳定性的影响。方法:6种无机抗菌剂分别加入ESP中,测试牛牙釉质粘结强度、边缘封闭性以及粘结样本颜色稳定性的变化。结果:抗菌剂添加比为0.5%对ESP牙釉质剪切强度无不利影响(P>0.05),比例增至2.5%时,黏结强度呈不同程度降低。抗菌剂添加比为0.5%时,仅有一种抗菌剂的添加使冠方微渗漏指数较对照组显著增加(P<0.05)。粘结样本经不同处理以老化1年后颜色参数变化最为显著,但与ESP空白对照相比,抗菌剂添加后的颜色变化仍在临床可接受的范围之内。结论:控制适当的添加比例,5种受试的无机抗菌剂的添加对ESP的黏结性能可无显著影响,对颜色稳定性的影响在临床可接受的范围之内。

Objective This study was to evaluate the influence of incorporation of inorganic antibacterial agents on bonding characteristics and color stability of an experimental self-etching primer ESP. Methods Six kinds of inorganic agents were incorporated respectively into ESP. Bovine enamel bond strength, marginal adaptability and color stability were tested. Results The incorporation of 0.5% of either tested antibacterial agent into ESP did not show any adverse influence on bond strength （P 〉 0.05）, while the shear bond strengths of ESP containing 2.5% of antibacterial agent were decreased to different extent. Marginal adaptability test showed that there was only one antibacterial agent whose incorporation had adverse effect on the incisal microleakage scores; others had no significant influences. Color alteration of specimens experiencing one year＇s aging was the most significant; however, the color changes of those incorporated with antibacterial agents were still within clinical acceptable limit comparing with ESP empty control. Conclusion The incorporation of 5 tested inorganic antibacterial agents with a proper concentration had no significant influence on intrinsic bonding characteristics of ESP; their influence on color stability was within clinical acceptable limit.