RESUMO
To investigate the association of the failure of porcelain laminate veneers with factors related to the patient, material, and operator. This clinical survey involved 29 patients [19 women and 10 men] and their dentists, including undergraduate and postgraduate dental students and dental interns. Two questionnaires were distributed to collect information from participants. All patients were clinically examined. Criteria for failure of the porcelain laminate veneers included color change, cracking, fracture, and/or debonding. A total of 205 porcelain laminate veneers were evaluated. All of the restorations were fabricated from IPS e.max Press and cemented with Variolink Veneer [Ivoclar Vivadent, Schaan, Principality of Liechtenstein] or RelyX veneer cement [3M ESPE, St. Paul, MN, USA]. The preparations were generally located in enamel [58.6%], and most veneers had an overlapped design [89.7%]. Ten patients [34.48%] showed veneer failure, most often in terms of color change [60%]. Overall, 82.8% of patients were satisfied with their restorations. Insufficient clinical skills or operator experience resulted in restoration failure in one-third of patients.