Mean (SD)

Group A (n = 34)

Group B (n = 35)

Group C (n = 33)

Plaque scores

Baseline

2.00 (0.83)

2.11 (0.62)

2.49 (0.70)

At 3 months

1.75 (0.77)

1.83 (0.70)

2.51 (0.61)

Change

−0.25 (0.50)¹

−0.28 (0.51)²

0.03 (0.66)¹

Mucosal scores

Baseline

1.61 (0.77)

1.86 (0.76)

2.06 (0.76)

At 3 months

1.58 (0.65)

1.92 (0.77)

2.17 (0.75)

Change

−0.03 (0.51)

0.06 (0.41)

0.11 (0.47)

Mucosal-plaque scores

Baseline

1.94 (1.17)

1.28 (0.51)

1.57 (0.61)

At 3 months

1.19 (0.40)

1.83 (1.00)

2.57 (1.54)

Change

−0.75 (1.13)^3,4

0.56 (0.97)³

1.00 (1.46)⁴