根面处理方法对纤维桩核系统冠渗漏影响的初步研究

Preliminary study of effects of root surface treatments on coronal microleakage of fiber post-resin core systems

目的:研究不同根面处理方法对纤维桩树脂核系统的冠渗漏的影响。方法:纤维桩粘固后,分别用4种牙本质粘结系统(Contax、Clearfil SE Bond、Single Bond 2和Prime&Bond NT)进行根面处理,Multicore Heavy Body做核,印度墨水染色、透明化处理后,体视显微镜下观察染料渗入情况。结果:不同粘结系统根面处理后纤维桩冠渗漏计分均值不同,其中Contax最大,为1.6,Clearfil SE Bond最小。结论:不同粘结系统根面处理后纤维桩树脂核微渗漏表现不同,Clearfil SE Bond自酸蚀粘结系统边缘封闭性表现良好。

Objective：To study the effects of different root surface treatments on the coronal mieroleakage of fiber post - resin core systems. Methods： After the fiber posts were cemented into the root canals, the root surfaces were treated with four dental adhesive systems, respectively （Contax, Clearfil SE Bond, Single Bond 2 and Prime＆Bond NT）. Resin core materials （ Muhicore Heavy Body） were placed around them. After the test pieces were dyed and made transparent, and the assessment of the coronal nficroleakage was done under stereomicroscope. Results： Different type of bonding agents had different scores of the coronal microleakage of fiber post - resin core system. Contax reached the maximum of 1.6 and Clearfil SE Bond had the minimum score. Conclusion ： The type of bonding agents can affect the coronal microleakage of fiber post - resin core system. The least core coronal microleakage is recorded in Clearfil SE Bond which has good sealing property.