D Byrne1, F Houston, R Cleary, N Claffey. 1. Department of Restorative Dentistry and Periodontology, School of Dental Science, Trinity College, Dublin, Ireland.
Abstract
STATEMENT OF PROBLEM: There is insufficient information regarding the adaptation of abutments to implants. PURPOSE: This study assessed the adaptation of premachined, cast, and laboratory modified premachined abutments to implants at two sites: abutment/implant interface and screw to screw seat. MATERIAL AND METHODS: Six combinations of abutments and implants were studied: CeraOne abutments joined to Nobel Biocare implants; STR (Implant Innovations Inc.) abutments joined to 31 implants; Cast UCLA (31) abutments subjected to porcelain firing cycles and joined to 31 implants; Cast UCLA abutments subjected to porcelain firing cycles and joined to Nobel Biocare implants; UCLA premachined abutments cast with gold palladium alloy and subjected to porcelain firing cycles (later joined to 31 implants); and UCLA premachined abutments joined to 31 implants. Each group contained five assemblies. RESULTS: The adaptation of abutments to implants was closer and the amounts of contact larger for assemblies with premachined and laboratory modified premachined abutments than for those with cast abutments. CONCLUSION: The finishing of custom-made abutments requires further refinement.
STATEMENT OF PROBLEM: There is insufficient information regarding the adaptation of abutments to implants. PURPOSE: This study assessed the adaptation of premachined, cast, and laboratory modified premachined abutments to implants at two sites: abutment/implant interface and screw to screw seat. MATERIAL AND METHODS: Six combinations of abutments and implants were studied: CeraOne abutments joined to Nobel Biocare implants; STR (Implant Innovations Inc.) abutments joined to 31 implants; Cast UCLA (31) abutments subjected to porcelain firing cycles and joined to 31 implants; Cast UCLA abutments subjected to porcelain firing cycles and joined to Nobel Biocare implants; UCLA premachined abutments cast with gold palladium alloy and subjected to porcelain firing cycles (later joined to 31 implants); and UCLA premachined abutments joined to 31 implants. Each group contained five assemblies. RESULTS: The adaptation of abutments to implants was closer and the amounts of contact larger for assemblies with premachined and laboratory modified premachined abutments than for those with cast abutments. CONCLUSION: The finishing of custom-made abutments requires further refinement.
Authors: Davide Apicella; Mario Veltri; Nicoletta Chieffi; Antonella Polimeni; Agostino Giovannetti; Marco Ferrari Journal: Ann Stomatol (Roma) Date: 2011-02-13
Authors: João Paulo da Silva-Neto; Marcel Santana Prudente; Thiago de Almeida Prado Naves Carneiro; Mauro Antônio de Arruda Nóbilo; Mario Paulo Amante Penatti; Flávio Domingues das Neves Journal: J Appl Oral Sci Date: 2012 Sep-Oct Impact factor: 2.698
Authors: Ana Paula Gumieiro Jaime; Diego Klee de Vasconcellos; Alfredo Mikail Melo Mesquita; Estevão Tomomitsu Kimpara; Marco Antonio Bottino Journal: J Appl Oral Sci Date: 2007-06 Impact factor: 2.698