Leinfelder K F
Department of Biomaterials and Restorative Dentistry, School of Dentistry, University of Alabama, Birmingham 35294.
J Am Dent Assoc. 1991 Apr;122(4):65-70. doi: 10.14219/jada.archive.1991.0142.
Composite resins have been improved dramatically over the last few years. Some of the newest formulations are nearly as wear resistant as amalgam. Under the appropriate conditions, they may be used to restore Class I and Class II cavity preparations. Their use, however, must be in accordance with the conditions described in this paper. The following conditions should be followed: The selection of a posterior composite resin should be based on well-documented clinical data, not physical and mechanical properties. Complete moisture control is essential for the successful restoration of posterior teeth with composite resin. Always use a glass ionomer as a liner. The material should cover all the dentin. Cavity preparations should be minimal in dimension. Avoid unnecessary removal of tooth structure. Do not bevel the occlusal cavosurface margin. Insert the composite in increments. Minimize introduction of trauma during the finishing procedure. Use a surface penetrating sealant to reduce wear rate and to enhance margin integrity. Evaluate carefully the clinical performance of the restored tooth at least once a year. Discuss possible limitations of posterior composite resins as compared with amalgam restorations.
在过去几年中，复合树脂有了显著改进。一些最新配方的耐磨性几乎与汞合金一样。在适当条件下，它们可用于修复Ⅰ类和Ⅱ类洞形预备。然而，其使用必须符合本文所述条件。应遵循以下条件：后牙复合树脂的选择应基于充分记录的临床数据，而非物理和机械性能。完全控制湿度对于用复合树脂成功修复后牙至关重要。始终使用玻璃离子体作为衬层。该材料应覆盖所有牙本质。洞形预备的尺寸应最小化。避免不必要地去除牙体组织。不要对咬合洞缘斜面。分层填入复合树脂。在修整过程中尽量减少创伤的引入。使用表面渗透密封剂以降低磨损率并增强边缘完整性。每年至少仔细评估一次修复牙齿的临床性能。讨论后牙复合树脂与汞合金修复相比可能存在的局限性。
