Characterization of Co-Cr-W Dental Alloys with Veneering Materials Manufactured via Subtractive Milling and Additive Manufacturing LDED Methods

Abstract

Laser-directed energy deposition (LDED) is an additive manufacturing (AM) technology which can be an alternative to the traditional subtractive milling process for the obtention of porcelain-fused-to-metal (PFM) prosthesis. Still, the adhesion performance of the veneering ceramics for this material has been not studied yet. The main objective of this study is to perform a systematic comparison of the adhesion performance of Co-Cr-W metal frameworks obtained through LDED and conventional milling techniques. Comparison includes microstructural, superficial, and adhesion analysis. Co-Cr manufactured via LDED technique presents similar behavior (p < 0.05) in comparison to the material obtained via milling techniques, and its performance was validated with the veneering ceramics and veneering composites currently employed in the dental industry.

Evaluation of robocasting process in the layering of dental feldspathic porcelain in metal‐ceramic restorations

“…All-ceramic restorations are popular in clinical practice because of excellent esthetic performance 1 and biocompatibility 2 ; however, their high cost 3 and brittle behavior, leading to fatigue fracture in repetitive function, 4 limit their use. Therefore, metal-ceramic (or porcelain fused to metal) restorations play an important role in fixed prosthetics, as they offer a good combination of mechanical strength and esthetics, due to the metal framework and ceramic veneer, 5,6 respectively, and are also more cost-effective (particularly with the use of digital technologies 7 ).…”