Shaping by microstereolithography and sintering of macro–micro-porous silicon substituted hydroxyapatite

Marie Lasgorceix 1 Eric Champion 2 Thierry Chartier 3
2 SPCTS-AXE4 - Axe 4 : céramiques sous contraintes environnementales
SPCTS - Science des Procédés Céramiques et de Traitements de Surface
3 SPCTS-AXE1 - Axe 1 : procédés céramiques
SPCTS - Science des Procédés Céramiques et de Traitements de Surface
Abstract : Additive manufacturing of silicon substituted hydroxyapatite (SiHA) ceramics with controlled macro–micro-porous architecture by microstereolithography and sintering is reported. Due to the role of silicon in bone calcification, the incorporation of silicate in hydroxyapatite has become of interest for applications in bone tissue engineering. But, the shaping and the sintering of SiHA remain few studied. For the shaping process, the formulation of a photopolymerizable suspension and microstereolithography parameters were optimized. Adjustment of the sintering parameters allowed the production of ceramics with controlled open microporosity in a wide range of variation, while preserving phase pure SiHA. A dimensioning model that takes into account the overcure due to light scattering during photopolymerization and the shrinkages during sintering was established. Using this method, macropores of various cross-sections, within the size range of interest for bone ingrowth, were shaped demonstrating the efficiency of microstereolithography for the direct manufacturing of bioceramic scaffolds with accurate architecture.
Type de document :
Article dans une revue
Domaine :
Liste complète des métadonnées

https://hal-unilim.archives-ouvertes.fr/hal-01727661
Contributeur : Thierry Chartier <>
Soumis le : vendredi 9 mars 2018 - 14:09:47
Dernière modification le : vendredi 23 mars 2018 - 15:00:48

Identifiants

Citation

Marie Lasgorceix, Eric Champion, Thierry Chartier. Shaping by microstereolithography and sintering of macro–micro-porous silicon substituted hydroxyapatite. Journal of the European Ceramic Society, Elsevier, 2016, 36 (4), pp.1091 - 1101. ⟨10.1016/j.jeurceramsoc.2015.11.020⟩. ⟨hal-01727661⟩

Partager

Métriques

Consultations de la notice

101