Longevity of restorations in posterior teeth and reasons for failure.

摘要: Purpose This article compiles a survey on the longevity of restorations in stress-bearing posterior cavities and assesses possible reasons for failure. Materials methods The dental literature predominantly last decade was reviewed longitudinal, controlled clinical studies retrospective cross-sectional restorations. Only investigating performance permanent teeth were included. Longevity annual failure rates amalgam, direct composite restorations, glass ionomers derivative products, ceramic inlays, cast gold determined Class I II cavities. Results Annual are: 0% to 7% amalgam 9% composites, 1.4% 14.4% derivatives, 11.8% 7.5% 4.4% CAD/CAM 5.9% inlays onlays. Conclusion is dependent upon many different factors that are related materials, patient, dentist. principal secondary caries, fracture, marginal deficiencies, wear, postoperative sensitivity. A distinction must be made between causing early failures those responsible restoration loss after several years service.