Patient groups
Control Experimental
N 16 17
Age (years) 49.62 ± 2.07 52.9 ± 2.12
Gender (male/female [%]) 50/50 41.2/58.8
Smokers 50% 42.2%
Initial PPD (mm) 3.91 ± 0.21 4.09 ± 0.18
Initial CAL (mm) 5.37 ± 0.42 5.24 ± 1.44

PPD = probing pocket depth; CAL = clinical attachment level.