Histological evaluation of bone repair using beta-tricalcium phosphate

ABSTRACT

Objectives: The aim of the present study was to evaluate bone repair in defects induced in the cranium of Wistarrats using β-tricalcium phosphate. Study Design: In this research, we used 30 rats, randomly distributed in threegroups of 10 animals (G1, G2 and G3), corresponding respectively to time of histological evaluation (7, 15 and30 days). This was a paired study, a defect being induced in the parietal bone on either side of the median sagittalsuture of the animals, being the left-hand side the experimental subgroup (filled by biomaterial) and the rightcontrol. The histological evaluation was performed by means of light microscopy. The collected data were submittedto the Fisher Exact test for comparison between the groups and to the McNemar test for comparison betweenthe subgroups (P > 5%). Results: The results showed no statistically significant differences between the groupsand bone regeneration was similar at the different times of evaluation. Conclusions: Therefore, we concluded thatβ-tricalcium phosphate has not contributed significantly to repair process of defects induced in the cranium ofWistar rats (AU)