FIG. 7.

Histological sections 8 weeks after surgery. (a, d, g) Uncovered control group. (b, e, h) PCL/PLGA group. The membrane was not absorbed, and new bone formation is observed beneath the membrane. (c, f, i) PCL/PLGA/β-TCP group. The membrane was absorbed partially, and new bone was formed continuously. It was difficult to distinguish between old and new bone. Magnification, ×12.5 in (a, b, c) and ×40 in the others. The histomorphometric analysis of (j) total new bone formation in the defect. Left and right rectangles in (a, b, c) indicate the observation zones of (d, e, f) and (g, h, i) respectively. Color images available online at www.liebertpub.com/tea