Table 2.

Mean and SD of clinical parameters, and PGE₂ in healthy, gingivitis and periodontitis sites (N=30 subjects) at Baseline and 6-month visits

	Healthy sites (n=60)		Gingivitis sites (n=90)		Periodontitis sites (n=90)
Variables	Baseline	6-month	Baseline	6-month	Baseline	6-month
Plaque index (PI)	0.39±0.37	0.76±0.34	1.12±0.16	1.26±0.29	1.81±0.43	2.15±0.41
Gingival index (GI)	0	0	1.08±0.14	1.15±0.22	1.48±0.43	1.57±0.39
Bleeding index (BOP)	0	0	0.26±0.33	0.42±0.27	0.54±0.16	0.63±0.18
P. depth (mm) (PD)	1.94±0.63	2.09±0.64	2.64±0.45	2.85±0.57	5.74±0.65	6.13±0.82
A. loss (mm) (AL)	0.73±0.71	0.79±0.78	0.99±0.41	1.18±0.47	4.13±1.09	4.59±1.16
PGE2 (ng/site)	0.98±0.76	0.91±0.68	2.69±1.01	2.72±1.04	3.89±1.16	4.41±1.22
GCF volume (μl/30 s)	0.19±0.07	0.21±0.08	0.38±0.11	0.41±0.13	0.58±0.21	0.73±0.24