添加TMPT的“劲润”牙本质保护膜粘结强度的研究

目的改良试制三丙烯酸三羟甲基丙酯（TMPT）添加型即刻牙本质封闭剂,并进行牙本质粘结性能的研究。方法采用不同的TMPT、丙烯酸酯（Ac）添加比例,将＂劲润＂牙本质保护膜（Hybrid Coat,HyC）中的Ac取代;用600目砂纸打磨暴露牛牙牙本质后作为被着体样本,测试添加TMPT后的牙本质封闭剂的牙本质剪切粘结强度,用实体显微镜观察粘结界面断裂模式。结果 67%Ac～33%TMPT比例的试制牙本质封闭剂显示了最大牙本质粘结剪切力,约14.50MPa,界面断裂模式以凝集破坏为主;0%Ac～100%TMPT比例的试制牙本质封闭剂显示了较低粘结力,断裂模式主要为界面破坏。结论 HyC中添加33%T...

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Bibliographic Details
Published in西安交通大学学报（医学版） Vol. 34; no. 4; pp. 441 - 444
Main Author 周秦 牛林 刘越胜 谭文宏 逯宜 白乐康
Format Journal Article
LanguageChinese
Published 西安交通大学口腔医院,修复科,陕西西安,710004%西安交通大学口腔医院,技工室,陕西西安,710004 2013
Subjects
三丙烯酸三羟甲基丙酯（TMPT）
剪切粘结强度
即刻牙本质封闭
断裂模式
牙本质保护膜
牙本质保护膜
即刻牙本质封闭
断裂模式
三丙烯酸三羟甲基丙酯(TMPT)
剪切粘结强度
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ISSN1671-8259

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Summary:目的改良试制三丙烯酸三羟甲基丙酯（TMPT）添加型即刻牙本质封闭剂,并进行牙本质粘结性能的研究。方法采用不同的TMPT、丙烯酸酯（Ac）添加比例,将＂劲润＂牙本质保护膜（Hybrid Coat,HyC）中的Ac取代;用600目砂纸打磨暴露牛牙牙本质后作为被着体样本,测试添加TMPT后的牙本质封闭剂的牙本质剪切粘结强度,用实体显微镜观察粘结界面断裂模式。结果 67%Ac～33%TMPT比例的试制牙本质封闭剂显示了最大牙本质粘结剪切力,约14.50MPa,界面断裂模式以凝集破坏为主;0%Ac～100%TMPT比例的试制牙本质封闭剂显示了较低粘结力,断裂模式主要为界面破坏。结论 HyC中添加33%TMPT改良试制牙本质封闭剂可以提高其牙本质剪切粘结强度,使其在发挥活髓基牙抗过敏疗效的同时,可为最终修复体的成功粘结提供保障。
Bibliography:ZHOU Qin,NIU Lin,LIU Yue-sheng,TAN Wen-hong,LU Yi,BAI Le-kang （1.Department of Prosthodontics;2.Department of Dental Mechanic,Stomatological Hospital,Medical School of Xi＇an Jiaotong University,Xi＇an 710004,China）
Objective To investigate the shear bond strength of trial immediate dentin sealing materials to dentin that contained TMPT in commercially available Hybrid Coat（HyC）.Methods Trial dentin sealing materials were prepared by changing the combination proportion of Ac and TMPT in HyC,and then used on bovine teeth to test the shear bond strength to dentin.Results Shear bond strength was the highest when a trial dentin sealing material of 67% Ac-33% TMPT was used,which was about 14.50MPa,and failure modes of most specimens were cohesive failure.Bond strength was the lowest when the combination proportion was 0% Ac-100% TMPT.Conclusion The dentin bond strength could be enhanced when 33% TMPT was added to HyC,which would ensure bond strength of final restorations and relieve dentin hypersensitivity of the vit
ISSN:1671-8259