| 1648 Bond Strength of Porcelain to Grade 2 Titanium | ||
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R. CARLSSON, Svenska Keraminstitutet, Goteborg, Sweden, B. FONDELL, NobelBiocare, Goteborg, Sweden, A. HERRERO, University of Michigan, Ann Arbor, USA, M. SIERRAALTA, The University of Michigan, Ann Arbor, USA, and M.E. RAZZOOG, University of Michigan, School of Dentistry, Ann Arbor, USA Abstract Objectives: The precision of fit and biocompatibility of titanium crowns and bridges have been studied and found to be excellent for multiple dental applications. However, historically, the strength of the bond between dental porcelains designed for addition to titanium substructures has been a major question. Therefore, a study was initiated comparing the adhesiveness or bond strength of 4 commercially available dental porcelains to grade 2 titanium. Methods: Twenty-four rectangular bars of Grade 2 Titanium (25 mm long X 3 mm wide X 0.5 mm thick) were obtained for addition of porcelain. Each group of samples contained 6 specimens of each porcelain/titanium combination. Four commercially available titanium porcelains were prepared onto the substrate according to the manufacturer's recommendation. Opaque and dentin porcelain layers were applied symmetrically over a length of 8 mm to a total thickness of 1.1 mm (after firing). Bond strength tests were performed according to ISO 9693:1999, test 6.3.3 – metal-ceramic bond characterization. Results: The Schwickerath crack initiation test provided the following results with a measurement uncertainty of 3.0 Mpa: Duceratin 28.7 MPa Duceratin Plus 29.0 MPa Noritake TI-22 35.0 MPa Triceram 26.7 MPa Conclusion: Bond strength tests according to ISO 9693:1999, test 6.3.3 revealed that all of the Titanium porcelains included in this study passed the ISO requirements. Supported by NobelBiocare/University of Michigan Center for Excellence | ||
| Seq #207 - Ceramics: Surface Treatment, Surface Chemistry, and Bonding 11:00 AM-12:15 PM, Saturday, 15 March 2003 Henry B. Gonzalez Convention Center Exhibit Hall C | ||
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