Sapporo Medical Journal

Abstract : Purpose: The objective was to compare abutment teeth surface roughness between two different Cobalt-Chromium removable partial denture framework processing be different techniques (casting 3D printed resin pattern and selective laser melting). Methods: twelve Cobalt-Chromium removable partial denture frameworks were constructed, divided into two equal groups, Group 1: 3D printed casted frameworks Group 2: selective laser melting frameworks. The abutment teeth surface roughness was estimated by using digital microscope with digital software before & after undergoing cyclic fatigue tests. Results: There was not a statistically significant difference in abutment teeth surface roughness behavior between the studded groups (3D printed RPD frameworks and SLM frameworks), but the difference became significant after the chewing simulation. Conclusions: both SLM and 3D casted cobalt chromium RPD frameworks provided acceptable abutment teeth surface roughness. Therefore, SLM-fabrication seems to be a viable alternative technology to fabricate cobalt chromium RPD frameworks.