Manufacture of Co-Cr dental crowns and bridges by selective laser Melting technology

Currently, one of the most important applications of the Selective Laser Melting (SLM) process is dental frameworks manufacturing. The objective of the present study is to analyse mechanical and microstructural properties of dental crowns and bridges manufactured by SLM technology from Co-Cr alloy using a Phenix PM 100T Dental Machine over a production period of 14 months. The obtained results show clearly a successful application of the SLM technology to the design and manufacture of dental crowns and bridges. Dental parts with adequate density, geometrical accuracy, mechanical properties, and microstructure have been produced. Based on regular analyses results, of initial Co-Cr powder materials and final crowns properties characteristics, one can conclude that the Selective Laser Melting Process can be used for the manufacturing of dental parts in correlation with the required traditional standards. The good repeatability of the SLM process has been demonstrated.

[1]  M. Bertrand.  Direct Manufacturing of dense parts from martensitic precipitation hardening steel gas atomized powder by Selective Laser Melting (SLM) technology , 2009 .

[2]  EFFECT OF INITIAL POWDER PROPERTIES ON FINAL MICROSTRUCTURE AND MECHANICAL PROPERTIES OF PARTS MANUFACTURED BY SELECTIVE LASER MELTING , 2010 .

[3]  R. Ascherl,et al.  Rapid Prototyping , 1997, IEEE Robotics & Automation Magazine.

[4]  W. Brantley,et al.  Internal fit evaluation of crowns prepared using a new dental crown fabrication technique: laser-sintered Co-Cr crowns. , 2009, The Journal of prosthetic dentistry.

[5]  L. Froyen,et al.  Selective laser melting of iron-based powder , 2004 .

[6]  Henrique A. Almeida,et al.  Rapid prototyping and manufacturing for tissue engineering scaffolds , 2009, Int. J. Comput. Appl. Technol..

[7]  V. Firouzdor,et al.  Sintering of biocompatible P/M Co–Cr–Mo alloy (F-75) for fabrication of porosity-graded composite structures , 2008 .

[8]  Ignace Naert,et al.  Rapid manufacturing of dental prostheses by means of selective laser sintering/melting , 2005 .

[9]  Andrea Gatto,et al.  On the effects of building orientation in powder-fed Additive Layer Manufacture of steel 316L , 2009 .

[10]  Ming C. Leu,et al.  Rapid prototyping in dentistry: technology and application , 2006 .

[11]  Richard Bibb,et al.  Use of CAD/CAM technology to fabricate a removable partial denture framework. , 2006, The Journal of prosthetic dentistry.

[12]  R. Bibb,et al.  Rapid manufacture of removable partial denture frameworks , 2006 .

[13]  Ian Gibson,et al.  Advanced manufacturing technology for medical applications : reverse engineering, software conversion, and rapid prototyping , 2006 .

[14]  A. Varma,et al.  Combustion synthesis of CoCrMo orthopedic implant alloys: microstructure and properties , 2003 .

[15]  F. Klocke,et al.  Consolidation phenomena in laser and powder-bed based layered manufacturing , 2007 .

[16]  Ekkard Brinksmeier,et al.  Surface integrity of selective-laser-melted components , 2010 .

[17]  Richard A Black,et al.  The design and production of Co-Cr alloy implants with controlled surface topography by CAD-CAM method and their effects on osseointegration. , 2005, Biomaterials.

[18]  A. Gebhardt,et al.  Additive Manufacturing by selective laser melting the realizer desktop machine and its application for the dental industry , 2010 .

[19]  J. Kruth,et al.  Selective laser melting of biocompatible metals for rapid manufacturing of medical parts , 2006 .

[20]  J. Kruth,et al.  Dental prostheses by means of selective laser sintering , 2004 .

[21]  K.,et al.  HIGH DENSITY SELECTIVE LASER MELTING OF WASPALOY ® , 2006 .

[22]  A. Esnaola,et al.  Study of mechanical properties of AISI 316 stainless steel processed by “selective laser melting”, following different manufacturing strategies , 2010 .

[23]  Luca Facchini,et al.  Microstructure and mechanical properties of Ti‐6Al‐4V produced by electron beam melting of pre‐alloyed powders , 2009 .

[24]  Ph. Bertrand,et al.  Parametric analysis of the selective laser melting process , 2007 .