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Supermarket retailing is in flux. Conventional supermarkets lacking any true differentiating appeal are feeling the squeeze--by Wal-Mart and other value-oriented alternatives on the price end and by upscale specialty players [...]

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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. [ABSTRACT FROM AUTHOR]

Several letters to the editor are presented in response to articles in previous issues including one on how NewMediaPlus helps small business master social networks in the February 28, 2011 issue, one on the wannabe media stars Bill and Lynn Jerbis, and one on caregiving in the March 7, 2011 issue.