Direct laser metal sintering as a new approach to fabrication of an isoelastic functionally graded material for manufacture of porous titanium dental implants

Research output: Contribution to journalArticle


  • T Traini
  • C Mangano
  • F Mangano
  • A Macchi
  • A Piatelli

Colleges, School and Institutes


OBJECTIVES: This work focuses on a titanium alloy implants incorporating a gradient of porosity, from the inner core to the outer surface, obtained by laser sintering of metal powder. Surface appearance, microstructure, composition, mechanical properties and fractography were evaluated. METHODS: All the specimens were prepared by a selective laser sintering procedure using a Ti-6Al-4V alloy powder with a particle size of 1-10mum. The morphological and chemical analyses were performed by SEM and energy dispersive X-ray spectroscopy. The flexure strength was determined by a three-point bend test using a universal testing machine. The surface roughness was investigated using a confocal scanning laser microscope. The surface roughness variation was statistically evaluated by use of a Chi square test. A p value of


Original languageEnglish
JournalDental Materials
Publication statusPublished - 27 May 2008


  • Titanium alloy, Metallography, Rapid prototyping, Surface roughness, Laser manufacturing, Mechanical properties