【摘要】 目的:探讨不同表面处理方法对POPO纤维桩粘结固位力的影响。方法:将40根POPO纤维桩分为4组,每组10根。A组:不处理;B组:硅烷化处理60s;C组:酸蚀处理60s;D组:酸蚀处理60s+硅烷化处理60s。40颗离体前磨牙截冠后随机分到上述4组,根管处理后粘结纤维桩,包埋离体牙,在万能实验机上作拉力测试。结果:A、B、C及D组对纤维桩的粘结固位力分别为(159.60±11.80)、(184.41±11.66)、(207.33±7.58)和(224.66±18.19)N。硅烷化处理(a)和酸蚀处理(b)对纤维桩粘结固位力有影响(Fa=18.701,Fb=81.490,P均<0.001),但二者无交互作用(Fa×b=0.590,P=0.450)。结论:硅烷化和酸蚀均可增强POPO纤维桩的粘结固位力,但二者无交互作用。更多还原

【Abstract】 Aim:To investigate the effects of different surface treatments on the adhesive strength between POPO fiber post and resin cement.Methods:According to different surface treatments,40 fiber posts were randomly allocated into four groups.Group A:control group,no treatment;Group B:silanization application for 60 s;Group C:etching application for 60 s;Group D:etching application for 60 s plus silanization application for 60 s.Ten fiber posts in each group.Forty intact premolars were removed the crown and randomly assigned to four groups.After root canal treatment POPO fiber post was adherred into root canal.The adhesive strength of the samples were tested by the universal testing machine.Results:The adhesive strength of POPO fiber post of group A,B,C,and D was(159.60±11.80),(184.41±11.66),(207.33±7.58),and(224.66±18.19) N.Silanization(a) and etching(b) had effects on the adhensive strength(Fa=18.701,Fb=81.490,P<0.001),but the 2 factors had no synergistic effects(Fa×b=0.590,P=0.450).Conclusion:The adhesive strength has been enhanced after different surface treatments on the POPO fiber posts,but they had no synergistic effects.更多还原