Surface Baseline 3 months Bone loss Pa value 6 months Bone loss Pa value
Mesial
M (SD)
3.5 (0.70) 4.0 (0.66) 0.5 (0.67) P = 0.025b 4.7 (1.05) 1.2 (0.98) P = 0.01b
Distal
M (SD)
3.6 (0.51) 4.2 (0.42) 0.6 (0.53) P = 0.034b 5.4 ± 1.17 1.8 (1.02) P = 0.007b

aTested between baseline and at 3 and 6 months.
bSignificant, non-parametric Wilcoxon paired test.
M (SD) = mean (standard deviation).