Martin F E
Department of Operative Dentistry, University of Sydney.
Ann R Australas Coll Dent Surg. 1991 Oct;11:178-88.
Despite the widespread use of posterior composite resins and the availability of porcelain and composite resin inlays to restore posterior teeth, clinical researchers express caution regarding their use. Two main concerns include: the technique sensitive nature of the procedures involved and limitations in the performance of these restorations due to the physical properties of the materials. Composites are prone to wear, fracture and a lack of marginal seal; whilst porcelain is brittle, difficult to manipulate and has the ability to wear opposing enamel. Longevity of the newer systems has not yet been determined and as such they should be regarded as experimental. Patients who request these restorations need to be provided with a thorough explanation of the advantages and disadvantages of each type of restoration; following this, careful clinical judgment and conservative use of these materials is recommended for optimum results.
尽管后牙复合树脂已被广泛使用，并且有瓷嵌体和复合树脂嵌体可用于修复后牙，但临床研究人员对其使用仍持谨慎态度。主要有两个问题：一是相关操作对技术要求较高，二是由于材料的物理性能，这些修复体的性能存在局限性。复合材料容易磨损、断裂且边缘密封性差；而瓷质材料易碎，难以操作，并且会磨损对颌牙釉质。新型修复系统的耐久性尚未确定，因此应将它们视为实验性的。对于要求进行这些修复的患者，需要对每种修复类型的优缺点进行全面解释；在此之后，建议谨慎进行临床判断并保守使用这些材料，以获得最佳效果。
