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Acta Cirurgica Brasileira

On-line version ISSN 1678-2674

Abstract

FIGUEIREDO, Arthur Silveira de et al. Devitalized bovine bone, porous coralline hydroxyapatite, castor beans polyurethane and autograft implants in rabbits. Acta Cir. Bras. [online]. 2004, vol.19, n.4, pp. 370-382. ISSN 1678-2674.  http://dx.doi.org/10.1590/S0102-86502004000400008.

PURPOSE: To study comparatively devitalized bovine bone, porous coralline hydroxyapatite, castor beans polyurethane implants and autograft in the repair of 6x10mm bony defect in femur of rabbits. METHODS: Ninety six New Zealand rabbits were distributed in 4 groups conforms the material of replacement of the bony defect. After following of 4 and 12 weeks, the pieces were submitted the macroscopic, microscopic, radiographic, tomographic and histometric analysis. To data was applied Kruskal-Wallis, Mann-Whitney, Fisher, t-Student and qui-square statistical tests. RESULTS: The autograft showed greatest osteogenic potential; the devitalized bovine bone produces larger inflammatory reaction, larger number of cystic cavities and slowness integration; the porous coralline hydroxyapatite maintains the initial radiodensity; devitalized bovine bone and castor beans polyurethane implants showed increased radiodensities as they were invaded by the bony formation. CONCLUSION: Devitalized bovine bone implants induces slower bony formation, when compared to the autograft, porous coralline hydroxyapatite and castor beans polyurethane implants.

Keywords : Bovine bone; Hydroxyapatite; Polimer; Autograft; Rabbit.

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