Figure 7: a) the biomaterial particles were mostly surrounded by fibrous tissue. No new bone was present in the central portion of the bone defects. Acid fuchsin and toluidine blue 2X, Scale bar=1mm; b) previous image at higher magnification. New bone (Arrows) was present in the periferical portion of the bone defect. and around biomaterial particles (GDPB). Acid fuchsin and toluidine blue 100X.