Follow-up Clinical parameters mb b db dp p mp baseline Plaque (+/-) + - + - - + 12 months Plaque (+/-) - - - - - - 24 months Plaque (+/-) - - - - - - baseline BoP(0-3) 0 1 0 0 1 1 12 months BoP(0-3) 0 0 0 0 0 0 24 months BoP(0-3) 0 0 0 1 0 0 baseline PPD (mm) 2 5 7 7 6 9 12 months PPD (mm) 2 3 4 3 3 4 24 months PPD (mm) 2 3 4 2 2 4

Table 1: Clinical parameters measured at baseline, 12 months and 24 months.