Table 1 . Values of Mean ± SD of Clinical Parameters for Applied Therapeutic Procedures .

Clinical Parameter	Evaluation Point	Group A SRP	Group B LT	Group C PDT	P Value
PPD (mm)
	Base line	5.14±1.24	5.25±1.39	5.11±1.13	.03
	6 weeks	4.48±1.45	3.93±1.42	4.33±1.56
	P value	0.000	0.000	0.000
	0-6 w ∆	0.65±1.07	1.31±1.70	0.78±1.41
	Base line	5.14±1.24	5.25±1.39	5.11±1.13	.027
	3 months	4.03±1.38	3.63±1.40	4.18±1.54
	P value	0.000	0.000	0.000
	0-3 m ‏∆	0.92±1.24	1.59±1.77	0.89±1.34
CAL (mm)
	Base line	4.94±1.67	4.97±1.69	5.06±1.54	.018
	6 weeks	4.46±1.55	4.00±1.58	4.10±1.78
	P value	0.000	0.000	0.000
	0-6 w ‏∆	0.48±1.02	0.96±1.5	0.95±1.30
	Base line	4.94±1.67	4.97±1.69	5.06±1.54	.50
	3 months	3.90±1.68	3.80±1.73	4.10±1.77
	P value	0.000	0.000	0.000
	0-3 m ‏∆	0.83±1.50	1.17±1.64	0.92±1.30
PI mean score
	Base line	0.89±0.87	1±0.98	0.97±0.87	.26
	6 weeks	0.79±0.77	0.70±0.71	0.75±0.84
	P value	0.27	0.002*	0.060
	0-6 w ‏∆	0.10±0.90	0.29±0.83	0.22±0.99
	Base line	0.89±0.87	1±0.98	0.97±0.87	.60
	3 months	0.71±0.92	0.90±0.89	0.77±0.88
	P value	0.20	0.30	0.116
	0-3 m ‏∆	0.13±1.05	0.11±0.15	0.21±1.14
PBI mean score
	Base line	2.5±1.05	2.67±0.93	2.5±0.82	‏.10
	6 weeks	2.28±0.89	2.03±0.87	2.04±0.81
	P value	0.23	0.000	0.000
	0-6 w ∆	0.29±1.19	0.63±1.15	0.50±0.95
	Base line	2.5±1.05	2.67±0.93	2.5±0.82	.12
	3 months	1.92±0.82	1.73±0.83	1.92±0.96
	P value	0.002	0.000	0.000
	0-3 m ‏∆	0.1±1.23	0.94±1.23	0.62±1.27

Abbreviations: SRP‏, scaling and root planning; LT, laser therapy; PDT, photodynamic therapy; PPD, periodontal pocket depth; CAL, clinical attachment level; PI, plaque‏ index‏; PBI‏, papilla bleeding index.