Ajuste marginal e interno de restaurações de cerâmica pura fabricadas em CAD / CAM: uma revisão da literatura

Abstract

Objective: the aim of this article was to review the literature about the marginal and internal fit of CAD/CAM fabricated all-ceramic restorations. Material and Methods: a review of literature using Pubmed and Bireme database was executed and 37 articles in English and Portuguese were selected. The keywords were "Computer-Aided Design," "Dental marginal adaptation," "Dental restoration, permanent." Results: the results proved that this system can generate restorations with clinically acceptable marginal fit (≤100 µm). However, other parameters must be considered to achieve these results such as milling machine, bur diameter, software, design preparation, smooth preparation margins and incorporation of rounded line angles on the tooth preparation, learning curve of the operator and type of impression method. Conclusion: therefore, although some clinicians present concerns related to the internal fit of CAD/CAM system fabricated restorations, studies corroborate the success on the fit of these restorations, which justifies clinical use and indication of CAD/CAM system.