title: Clinical evaluation on porcelain laminate veneers bonded with light-cured composite: results up to 7 years.
abstract: The purpose of this study was to evaluate the clinical performance of laminate porcelain veneers bonded with a light-cured composite. Thirty patients were restored with 119 porcelain laminate veneers. The veneers were studied for an observation time of 7 years. Marginal adaptation, marginal discoloration, secondary caries, color match, and anatomic form were clinically examined following modified United States Public Health Service (USPHS) criteria. Each restoration was also examined for cracks, fractures, and debonding. Pulp vitality was verified. In addition, plaque and gingival indexes and increase in gingival recession were recorded. Survival rate evaluating absolute failures and success rate describing relative failures were statistically determined, using both restoration and patient-related analyses. On the basis of the criteria used, most of the veneers rated Alfa. After 7 years, the results of the clinical investigation regarding marginal adaptation and marginal discoloration revealed only 2.5% and 4.2% Bravo ratings, respectively, among the 119 initially placed veneers. Using the restoration as the statistical unit, the survival rate was 97.5%, with a high estimated success probability of 0.843 after 7 years. Using the patient as the statistical unit, the survival rate was 90.0% and the estimated success probability after 7 years was 0.824. Gingival response to the veneers was all in the satisfactory range. Porcelain laminate veneers offer a predictable and successful treatment modality giving a maximum preservation of sound tooth. The preparation, cementation, and finishing procedures adopted are considered key factors for the long-term success and aesthetical result of the veneer restorations.
authors.affiliation: Department of Restorative Dentistry, School of Dentistry, University G. D'Annunzio, Via dei Vestini 31, 66100 Chieti, Italy. cdarcang@unich.it
authors.forename: Camillo
authors.initials: C
authors.lastname: D'Arcangelo
authors.forename: Francesco
authors.initials: F
authors.lastname: De Angelis
authors.forename: Mirco
authors.initials: M
authors.lastname: Vadini
authors.forename: Maurizio
authors.initials: M
authors.lastname: D'Amario
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D000293:Adolescent; D000328:Adult; D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods; D003731:Dental Caries / Q000209:etiology; D018772:Dental Marginal Adaptation; D003774:Dental Plaque Index; D003775:Dental Polishing / Q000379:methods; D003776:Dental Porcelain / Q000737:chemistry*; D003791:Dental Pulp Test; D019232:Dental Restoration Failure; D003801:Dental Veneers; D005260:Female; D005500:Follow-Up Studies; D005889:Gingival Recession / Q000145:classification; D006801:Humans; D055115:Light-Curing of Dental Adhesives / Q000379:methods; D008297:Male; D008875:Middle Aged; D010512:Periodontal Index; D011109:Polymethacrylic Acids / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*; D013499:Surface Properties; D016019:Survival Analysis; D019246:Tooth Preparation / Q000379:methods; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D003188:Composite Resins; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; D019279:Resin Cements; D003776:Dental Porcelain