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Table 1 Quantitative data by area and extent of newly formed bone (TBV/EV ratio)

From: A collagen membrane for periosteal expansion osteogenesis using a timed-release system in rabbit calvaria

  Post-ope. 5 weeks (mean ± SD) Post-ope. 8 weeks (mean ± SD)
  C1 E1 C2 E2
Ratio of TBV/EV (%) 55.8 ± 12.2 54.7 ± 13.1 57.2 ± 11.7 61.4 ± 11.3
p value 0.885 0.545
  1. Group C1 (5 weeks postoperatively without membrane). Group C2 (8 weeks postoperatively without membrane group). Group E1 (5 weeks postoperatively with membrane group). Group E2 (8 weeks postoperatively with membrane group)