Influence of laser enamel and dentine etching on marginal integrity of porcelain laminate veneers.
This investigation evaluated the effect of laser etching and acid etching techniques on the marginal leakage Vitadur N porcelain laminate veneers bonded either entirely on enamel, or with cervical margin located on root dentine of prepared extracted maxillary central incisors. Two different composite resin luting systems (light cured, or light and chemical cured) were used and compared. The bonded specimens were thermocycled and by employing the Standard dye penetration technique the leakage was scored from cervical and incisal margins. The least marginal leakage was observed beneath laminate veneers bonded entirely on enamel. Laser etching improved the sealing qualities of veneers with cervical margins on root dentine below the CEJ. Statistically insignificant differences were observed with the use of the two different composite resin luting systems.
el-Karaksi
A O
AO
Fixed Prosthodontics, Faculty of Oral and Dental Medicine, Cairo University.
D000134:Acid Etching, Dental / Q000379:methods*; D000537:Aluminum Oxide / Q000528:radiation effects*; D003188:Composite Resins / Q000528:radiation effects; D003743:Dental Enamel / Q000528:radiation effects*; D003763:Dental Leakage / Q000175:diagnosis / Q000209:etiology*; D018772:Dental Marginal Adaptation; D003776:Dental Porcelain / Q000528:radiation effects*; D003801:Dental Veneers; D003804:Dentin / Q000528:radiation effects*; D006801:Humans; D066298:In Vitro Techniques; D007180:Incisor; D053685:Laser Therapy; D008437:Maxilla; D019237:Tooth Cervix / Q000528:radiation effects
D003188:Composite Resins; D003776:Dental Porcelain; C058236:Vitadur N; D000537:Aluminum Oxide