Microleakage in the proximal walls of direct and indirect posterior resin slot restorations
Microleakage in the proximal walls of direct and indirect posterior resin slot restorations
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DOI：
10.2341/05-148
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发表时间：
2006-11-01
影响因子：
2.2
通讯作者：
Khajotia, S. S.
中科院分区：
文献类型：
--
作者：
Fruits, T. J.;Knapp, J. A.;Khajotia, S. S.
本研究比较了直接树脂槽修复体和间接树脂槽修复体近壁微渗漏的程度与牙本质结合系统的类型和牙龈边缘的位置的关系。使用直接（Filtek Supreme）和间接（Tescera ATL）修复树脂材料在60颗拔除的人磨牙中分别制备了两种II类槽状制剂并进行修复。使用各种类型的牙本质结合系统，包括自蚀刻（OneStep Plus/Tyrian SPE, iBond, Xeno III）和蚀刻和冲洗系统（All-Bond 2, Prime & Bond NT）来修复制备的牙齿。在一个近端盒中，牙龈近端壁位于牙髓-牙釉质交界处（CEJ）的顶端，在另一个近端盒中位于CEJ的冠状位置。用数字成像和分析系统对标本进行染色和微渗漏评估。不同修复组的微渗漏程度差异有统计学意义。总的来说，间接树脂修复组的微渗漏比直接树脂修复组少。牙本质结合系统的类型和牙龈边缘的位置等因素对近端树脂修复体沿壁发生微渗漏的程度有很大影响。
This study compared the degree of microleakage in the proximal walls of direct and indirect resin slot restorations in relation to the types of dentin bonding systems and the location of gingival margins. Two Class II slot preparations were prepared and restored in each of 60 extracted human molars using direct (Filtek Supreme) and indirect (Tescera ATL) restorative resin materials. Various types of dentin bonding systems, including self-etching (OneStep Plus/Tyrian SPE, iBond, Xeno III) and etch and rinse systems (All-Bond 2, Prime & Bond NT) were used to restore the prepared teeth. The gingival proximal wall was placed apical to the cementoenamel junction (CEJ) in 1 proximal box and coronal to the CEJ in the other. The specimens were stained and evaluated for microleakage using a digital imaging and analysis system. Significant differences were found in the degree of microleakage observed in the various restorative groups. In general, the group restored with indirect resin had less microleakage than the direct resin groups. Factors, such as type of dentin bonding system and location of gingival margins, exert a substantial influence on the degree of microleakage that occurred along the walls of proximal resin restorations.