Casting over Metal Method Used in Manufacturing Hybrid Cobalt-Chromium Dental Prosthetic Frameworks Assembles

• Published in: Materials Vol. 14; no. 3; p. 539
• Main Authors: Uriciuc, Willi Andrei, Vermesan, Horatiu, Tiuc, Ancuta Elena, Ilea, Aranka, Bosca, Adina Bianca, Popa, Catalin Ovidiu
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 23-01-2021; MDPI
• Subjects: Accuracy; Alloys; casing over metal method; Casting inserts; Chromium; Cobalt base alloys; cobalt–chromium alloy; Dental alloys; Dental crowns; Dental materials; dental prosthetic framework assemble; Design; Geometry; Inserts; Laboratories; Laser beam melting; Manufacturing; Methods; Position measurement; Production methods; Prostheses; selective laser melting; Software; Denmark; Italy; Germany; accuracy; selective laser melting; casing over metal method; dental prosthetic framework assemble; cobalt–chromium alloy; dental alloys
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma14030539

Cobalt-chromium (Co-Cr) alloys are the most widely used materials for removable and fixed dental prosthetic frameworks. The fitting accuracy between these components in dental prosthetic frameworks assembles (DPFAs) is largely influenced by the manufacturing method. This study presents a novel manufacturing method that combined two common techniques for obtaining one single framework: casting of Co-Cr inserts on top of parts previously manufactured by selective laser melting (SLM) of Co-Cr powder (CoM). Horizontal (
= 4) and vertical (
= 3) surfaces were microscopically analyzed (
= 770 count sum). The results revealed a high precision of the process and high fitting accuracy between the hybrid frameworks. The average distance measured between the frameworks in joined position was 41.08 ± 7.56 µm. In conclusion, the manufacturing of Co-Cr alloys DPFA using the CoM method reduced the deformation of hybrid frameworks and improved the joining accuracy between them.