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Table 3 Change in BOP

From: Clinical outcome of periodontal regenerative therapy using collagen membrane and deproteinized bovine bone mineral: a 2.5-year follow-up study

Variable Baseline 6-month 1-year 2.5-year
BOPa 80 40 30 20*
  1. BOP bleeding on probing
  2. * P = 0.023, by Fisher’s exact test (two-sided)
  3. aPercent sites positive