摘要
目的讨论不同表面处理方法对POPO纤维桩粘接固位力的影响。方法取50根POPO纤维桩,根据表面不同处理方法随机分为5组,每组10根。A组:不处理;B组:硅烷化处理60 s;C组:酸蚀处理30 s;D组:酸蚀处理60 s;E组:酸蚀处理120 s。选取45颗离体前磨牙截冠后随机分到5个实验组,树脂粘接纤维桩于根管内,包埋后在电子万能试验机上进行拉力测试。扫描电镜(SEM)观察处理后POPO纤维桩的表面形态。结果不同表面处理方法时纤维桩粘接力差异有统计学意义(P<0.05),D组的粘接力最大,为(207.33±7.58)N。D组和E组间粘接固位力差异有统计学意义(P=0.027),D组和C组间粘接固位力差异无统计学意义(P=0.112)。SEM观察处理后纤维桩的表面树脂基质粗糙度及纤维暴露数量有明显改变。结论不同表面处理方法增强了POPO纤维桩的粘接固位力。
Objective To test the effects of different surface treatments on the adhesive strength between POPO fiber post and resin cement.Methods 50 fiber posts were divided into 5 groups at random according to different sur-face treatments.Group A： Control group,no treatment.Group B： Silanization for 60 s.Group C： Etching for 30 s.Group D： Etching for 60 s.Group E： Etching for 120 s.Crowns of 45 fresh premolars were removed and assigned randomly to 5 test groups.After bonding and embedding the retentive force of the samples were tested by an universal testing machine.The morphology of the post surface was observed by a scanning electron microscope（SEM）.Results There were significant differences among the effects of different surface treatments on the adhesive strength between POPO fiber post and resin cement（P0.05）.Group D showed the highest adhesivestrength（207.33±7.58） N.There was signi-ficant different between group D and E（P=0.027）,but there was not significant difference between group D and C（P=0.112）.Significant changes of post surface after different treatments were discovered by SEM.Surface roughness and area of fiber exposure increased.Conclusion The adhesive strengths have been enhanced after conducting different surface treatments on the fiber posts.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
2011年第5期473-476,共4页
West China Journal of Stomatology
