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首页> 外文期刊>The Journal of Prosthetic Dentistry >Bonding porcelain laminate veneer provisional restorations: An experimental study.
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Bonding porcelain laminate veneer provisional restorations: An experimental study.

机译：粘结瓷层压板单板临时修复体：一项实验研究。

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STATEMENT OF PROBLEM: Minimal tooth preparation is required for porcelain laminate veneers, but an interim restoration is anticipated by patients to protect their teeth against thermal insult, chemical irritation, and to provide esthetics. Cement remaining after the removal of the provisional restoration can impair the etching quality of the tooth surface and the fit and final bonding of the porcelain laminate veneer. PURPOSE: This in vitro study inspected the tooth surface for remaining debris from cement after removal of a provisional restoration. MATERIAL AND METHODS: Seventy-two extracted natural anterior teeth were prepared for porcelain laminate veneers. For half of the teeth, the smear layer was removed before luting provisional restorations. Veneer provisional restorations were fabricated and luted to teeth with 3 bonding methods: temporary eugenol-free cement, spot etching combined with dual-curing luting cement, and polyurethane adhesive combined with dual-curing luting cement. After removal of provisional restorations 1 week later, the tooth surface was examined for residual luting material with an SEM. RESULTS: Traces of cement debris were found on provisionally prepared teeth for all 3 material methods. CONCLUSION: The use of polyurethane adhesive combined with the dual-curing cement revealed significantly less teeth with debris than the other methods. This difference was less distinct when the smear layer was removed.
机译：问题陈述：烤瓷贴面需要最少的牙齿准备，但是患者期望可以进行临时修复，以保护牙齿免受热损伤，化学刺激并提供美观。去除临时修复体后残留的水泥会损害牙齿表面的蚀刻质量，并损害瓷层压板的贴合性和最终粘合性。目的：这项体外研究检查了去除临时修复体后牙齿表面残留的水泥残渣。材料与方法：准备了72颗天然前牙用于瓷贴面贴面。对于一半的牙齿，在临时修复牙齿之前先去除涂抹层。制作了单板临时修复体，并通过3种粘合方法将其粘合到牙齿上：临时无丁香酚胶，点蚀与双固化胶合剂和聚氨酯胶粘剂与双固化胶合剂。 1周后去除临时修复体后，用SEM检查牙齿表面是否有残留的牙龈材料。结果：对于所有三种材料方法，在临时准备的牙齿上均发现了水泥碎屑的痕迹。结论：聚氨酯胶粘剂与双固化水泥的结合使用比其他方法显着减少了带有碎屑的牙齿。当去除涂片层时，这种差异不太明显。

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