Surface characterization and in vivo evaluation of laser sintered and machined implants followed by resorbable-blasting media process: a study in sheep
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Bowers, Michelle; Yoo, Daniel; Marin, Charles; Gil, Luiz; Shabaka, Nour; Goldstein, Matt; Janal, Malvin; Tovar, Nick; Hirata, Ronaldo; Bonfante, Estevam A.; Coelho, Paulo G.
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Aquest document és un/a article, creat/da en: 2016
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Background: This study aimed to compare the histomorphometric and histological bone response to laser-sintered
implants followed by resorbable-blasting media (RBM) process relative to standard machined/RBM surface treated
implants.
Material and Methods: Six male sheep (n=6) received 2 Ti-6Al-4V implants (1 per surface) in each side of the
mandible for 6 weeks in vivo. The histomorphometric parameters bone-implant contact (BIC) and bone area fraction
occupancy (BAFO) were evaluated.
Results: Optical interferometry revealed higher Sa
and Sq
values for the laser-sintered/RBM surface in relation to
standard/RBM implants. No significant differences in BIC were observed between the two groups (p>0.2), but
significantly higher BAFO was observed for standard/RBM implants (p<0.01).
Conclusions: The present study demonstrated that both surfaces were biocompatible and osseoconductive, and the
combination of laser sintering and RBM has no advantage over the standard machined implants with subsequent
RBM.
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