OBJECTIVE: The purpose of this study was to evaluate the retention of four cements used to lute metal restorations onto computer designed and manufactured titanium implant abutments of different heights and convergence angles. MATERIAL AND METHODS: Test specimens consisted of metal coping cemented on Procera titanium abutments of 5, 7, and 9 mm of height, and of 0 degrees , 4 degrees , and 8 degrees of convergence angle. The cements used were zinc-phosphate, zinc oxide-eugenole, polyurethane resin with and without vaseline. The samples were tested in a universal testing machine. The mean uniaxial load at point of separation was determined. The results were statistically evaluated with ANOVA. RESULTS: The luting agent, the height, and the taper influence the retention of metal casting on customized CAD-CAM implant abutments. CONCLUSION: The most retentive cement was zinc-phosphate, followed by polyurethane, polyurethane plus vaseline, and zinc oxide-eugenol.
OBJECTIVE: The purpose of this study was to evaluate the retention of four cements used to lute metal restorations onto computer designed and manufactured titanium implant abutments of different heights and convergence angles. MATERIAL AND METHODS: Test specimens consisted of metal coping cemented on Procera titanium abutments of 5, 7, and 9 mm of height, and of 0 degrees , 4 degrees , and 8 degrees of convergence angle. The cements used were zinc-phosphate, zinc oxide-eugenole, polyurethane resin with and without vaseline. The samples were tested in a universal testing machine. The mean uniaxial load at point of separation was determined. The results were statistically evaluated with ANOVA. RESULTS: The luting agent, the height, and the taper influence the retention of metal casting on customized CAD-CAM implant abutments. CONCLUSION: The most retentive cement was zinc-phosphate, followed by polyurethane, polyurethane plus vaseline, and zinc oxide-eugenol.
Authors: R Ajay; K Suma; Seyed Asharaf Ali; Jambai Sampath Kumar Sivakumar; V Rakshagan; V Devaki; K Divya Journal: J Pharm Bioallied Sci Date: 2017-11
Authors: Albano Porto da Cunha; Glauco Pereira Moysés; Ana Christina Claro Neves; Rafael Pino Vitti; Flávia Cardoso da Rosa Goulart; Laís Regiane da Siva-Concílio Journal: Acta Biomater Odontol Scand Date: 2016-01-26
Authors: Cristina Bignardi; Elisabetta M Zanetti; Mara Terzini; Anna R Ciccola; Gianmario Schierano; Alberto L Audenino Journal: Open Biomed Eng J Date: 2018-06-29