Table 4: Mean values ± standard deviations of clinical parameters in group III treated with standard scaling and root planning plus 20mg doxycycline and 30 mg CoQ10 twice/day for 3 months. Letters a, b, and c refer to the degree of significance at *P<0.05; significant difference was found among groups marked by different letters (a,b,c) and no significant difference was found among groups marked by similar letters.

Time Gingival Index Plaque Index Bleeding Index Pocket Depth Clinical Attachment Loss
Baseline 2.42 ± 0.3a 2.36 ± 0.38a 0.85 ± 0.08a 4.55 ± 0.43a 4.76 ± 0.44a
1 month 0.42 ± 0.08b 0.42 ± 0.1b 0.26 ± 0.14b 3.37 ± 0.4b 3.6 ± 0.50b
3 months 0.27 ± 0.04c 0.27 ± 0.07c 0.07 ± 0.02c 2.74 ± 0.4c 2.72 ± 0.4c
P value 0.000* 0.000* 0.000* 0.000* 0.000*