2020
DOI: 10.1002/jbm.b.34744
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3D printed bismuth oxide‐polylactic acid composites for radio‐mimetic computed tomography spine phantoms

Abstract: Polylactic acid (PLA) composite filaments with varying concentrations of bismuth oxide microparticle additives were fabricated for use with commercially available fused filament fabrication (FFF) printing systems for the production of spine phantoms that mimic the radiopacity of bone. Thermal analysis showed that the additives had limited impact on the glass transition temperature and melting point of the filaments, allowing for their use in commercial FFF systems with standard printer settings. The ultimate s… Show more

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Cited by 13 publications
(9 citation statements)
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References 39 publications
(42 reference statements)
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“…Composite granules were produced using a solvent-casting method for extrusion of filaments compatible with FFF printing systems, similar to previously reported methods [1] , [2] , [3] . Composite granules were made with 10 wt.…”
Section: Experimental Design Materials and Methodsmentioning
confidence: 99%
“…Composite granules were produced using a solvent-casting method for extrusion of filaments compatible with FFF printing systems, similar to previously reported methods [1] , [2] , [3] . Composite granules were made with 10 wt.…”
Section: Experimental Design Materials and Methodsmentioning
confidence: 99%
“…PLA blended with hydroxyapatite may potentially be used to repair bone defects [ 23 , 146 , 147 ]; however, there is little research and information on the ability of HA/PLA to stimulate bone formation in vivo [ 148 ]. PLA might also be used for anatomical model preparation and preoperative planning [ 149 , 150 ]. In addition, polylactic acid, along with PLGA—poly(lactic-co-glycolic acid)—represents the polymers most abundantly fabricated to create biodegradable scaffolds for the regeneration of cranial bone [ 51 , 151 ].…”
Section: 3d Cranioplastymentioning
confidence: 99%
“…X-ray adsorption of filaments used in AM for the fabrication of biomedical phantoms can also be assessed through studies regarding the distribution of the radiopaque agent within the polymeric matrix. The distribution of Bi 2 O 3 in a polylactic acid matrix was investigated, and the additive concentration for radiomimetic CT contrast of the composite filaments was established [159].…”
Section: Phase Distributionmentioning
confidence: 99%