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题名2种黏结剂用于后牙Ⅱ类洞边缘微渗漏的对比研究
被引量:7
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作者
兰俊
毛钊
赵俊
郭婷
苏寒
陈伟
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机构
南京军区南京总医院口腔科
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出处
《医学研究生学报》
CAS
2010年第9期928-930,共3页
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基金
国家自然科学基金(30271418)
全军"十一五"指令性课题(06Z017)
南京军区南京总医院科研基金(2009Q021)
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文摘
目的后牙树脂充填后的边缘微渗漏问题是影响修复效果的关键因素之一,而黏结剂的边缘封闭性在其中起了关键的作用。文中对比了2种牙本质黏结剂用于后牙Ⅱ类洞树脂充填的边缘封闭性。方法 20个新鲜离体磨牙随机分为2组,在近远中邻面制备浅的Ⅱ类洞和深的Ⅱ类洞,A组用可乐丽菲露自酸蚀黏结剂,B组用S ingle bong NT全酸蚀黏结剂,2组均用可乐丽菲露前后牙通用型树脂充填,2%甲苯胺蓝染色,从充填体正中剖开牙齿,观察充填体边缘微渗漏情况。结果 2组牙浅洞洞壁均无微渗漏,深洞颌面侧壁无微渗漏,龈壁存在不同程度微渗漏,但2组无显著性差异(P>0.05)。结论自酸蚀黏结剂在牙颈部均存在牙本质黏结界面微渗漏,微渗漏程度较稳定,全酸蚀黏结剂虽可避免边缘微渗漏,但微渗漏程度差异较大,技术敏感性较高。
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关键词
牙本质
牙本质黏结剂
微渗漏
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Keywords
in the successful resin fillings
and the adhesive system is very important in this process.The authors compared the degrees of marginal microleakage for two dentin adhesive systems in class Ⅱ cavities in the molar.Methods Shallow and deep class Ⅱ cavities were prepared in the mesial and distal surface of 20 recently extracted human molars.The molars were randomly divided into groups A and B
the former treated with the self-etching adhesive system(Clearfil)
and the latter with the whole etching bonding adhesive system(Single bong NT).All the cavities were filled with Clearfil resin.The teeth were immersed in 2% Toluidine blue solution
and then sectioned through the midline of the restoration for observation of the marginal microleakage under the stereomicroscope.Results Neither group showed any microleakage in the shallow cavities and occlusal surface walls of the deep cavities.However
different degrees of microleakage were observed in the gingival walls of the deep cavities
but with no significant differences between the two groups(P 〉 0.05).Conclusion Clearfil allows of microleakage
although it is stable.Single bong NT can prevent marginal microleakage
but the technical requirements are comparatively high for the varied degrees of the leakage. [Key words] Dentin
Dentin adhesive
Microleakage
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分类号
R781.05
[医药卫生—口腔医学]
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