Selective laser melting (SLM) of pure gold for manufacturing dental crowns

Khan, Mushtaq and Dickens, Phill (2014) Selective laser melting (SLM) of pure gold for manufacturing dental crowns. Rapid Prototyping Journal, 20 (6). pp. 471-479. ISSN 1758-7670

Full text not available from this repository.



This paper aims to present the application aspect of the work to manufacturing premolar and molar dental crowns by selective laser melting (SLM) of pure gold. Over the years different metals have been processed using laser-based Additive Manufacturing processes, but very little work has been published on the SLM of gold (Au). Previously published work presented suitable processing parameters for SLM of pure gold.


Suitable processing parameters were used to manufacture premolar and molar dental crowns using SLM system. Different layer thickness was used to analyse the effect on surface quality of crowns. Mechanical properties are checked using nanoindentation and micro Computerized Tomography scanning.


Dental crowns were successfully manufacturing using new build platform and suitable processing parameters. Parts were manufacturing using minimal supports which prevented parts from damaging during removal. A bed temperature of 100°C was found suitable for reducing warpage in the layers. Layer thickness of 50μm was found to have better surface quality and structural integrity as compared to 75μm. Porosity was found to be predominantly inter-layer. Small difference in mechanical properties of dental crowns is associated with the laser processing.


This research is the first of its kind which presents dental crown manufacturing using SLM of pure gold.

Item Type: Article
Keywords: Selective laser melting, Dental crowns, Porosity, Pure gold
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Mechanical, Materials and Manufacturing Engineering
Identification Number:
Depositing User: Eprints, Support
Date Deposited: 02 Aug 2017 14:41
Last Modified: 29 Apr 2020 15:07

Actions (Archive Staff Only)

Edit View Edit View