Int J Prosthodont 29 (2016), No. 4 1. July 2016
Int J Prosthodont 29 (2016), No. 4 (01.07.2016)
Page 351-353, doi:10.11607/ijp.4542, PubMed:27479340
Fit Analysis of Different Framework Fabrication Techniques for Implant-Supported Partial Prostheses
Spazzin, Aloísio Oro / Bacchi, Atais / Trevisani, Alexandre / Farina, Ana Paula / dos Santos, Mateus Bertolini Fernandes
Purpose: This study evaluated the vertical misfit of implant-supported frameworks made using different techniques to obtain passive fit.
Materials and Methods: Thirty threeunit fixed partial dentures were fabricated in cobalt-chromium alloy (n = 10) using three fabrication methods: one-piece casting, framework cemented on prepared abutments, and laser welding. The vertical misfit between the frameworks and the abutments was evaluated with an optical microscope using the single-screw test. Data were analyzed using one-way analysis of variance and Tukey test (α = .05).
Results: The one-piece casted frameworks presented significantly higher vertical misfit values than those found for framework cemented on prepared abutments and laser welding techniques (P < .001 and P < .003, respectively).
Conclusion: Laser welding and framework cemented on prepared abutments are effective techniques to improve the adaptation of three-unit implant-supported prostheses. These techniques presented similar fit.