Selective Laser Melting Technique of Co‐Cr Dental Alloys: A Review of Structure and Properties and Comparative Analysis with Other Available Techniques

Abstract

The current SLM devices provide metallic restorations made of Co-Cr alloys for removable and fixed partial dentures without compromising the alloy or restoration properties at a fraction of the time and cost, showing great potential to replace the aforementioned fabrication techniques in the long term; however, further clinical studies are essential to increase the acceptance of this technology by the worldwide dental community.

Effect of production method on surface roughness, marginal and internal fit, and retention of cobalt-chromium single crowns

“…[1][2][3] Recently developed production techniques, with computer-aided design and computer-aided manufacturing (CAD-CAM) provides better standardization. 4,5 In addition, the working environment for dental technicians may be improved when production using base metal alloys with potential adverse health effects develops into controlled procedures with less exposure to vapor and airborne particles. 6,7 The costs for CAD-CAM production were initially higher.…”

“…4 Milling has the advantage that restorations are produced from optimal quality material blocks. 4,5 However, limitations exist in the shape and fit of the restorations as this depends on the number of axes performing the milling and the size of the milling burs. 4,5 With laser-sintering, an additive technique, there are no such limitations and left-over powder may be reused.…”

“…4,5 However, limitations exist in the shape and fit of the restorations as this depends on the number of axes performing the milling and the size of the milling burs. 4,5 With laser-sintering, an additive technique, there are no such limitations and left-over powder may be reused. 4,5 Laser-sintering may thus provide advantages such as better material economy, improved fit, and unlimited complexity of the shape of the restorations.…”

“…4,5 With laser-sintering, an additive technique, there are no such limitations and left-over powder may be reused. 4,5 Laser-sintering may thus provide advantages such as better material economy, improved fit, and unlimited complexity of the shape of the restorations. 4,5 Fabrication procedures influence a restoration's surface roughness, fit, and retention.…”

“…4 Nevertheless, this difference is outweighed by the fact that CAD-CAM techniques are more time efficient. 4,5 Several computer-aided manufacturing techniques are currently available, including milling (M), laser-sintering (LS), and milled wax/lost wax (MLW). 4 Milling has the advantage that restorations are produced from optimal quality material blocks.…”