Etched porcelain veneers have now been used clinically for about 20 years. The profession was originally very skeptical about bonding thin shells of a brittle ceramic material to teeth. However, ceramic veneers have proved to be not only very esthetic but also extremely durable restorations. This two-part Clinical Appraisal reviews several articles related to veneer longevity and clinical factors contributing to--or detracting from--longevity. Part II will appear in the next issue of JERD.
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Swift et al. (2006) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: