Table 3.

Periodontal variables changes. PD: probing depth; CAL: clinical attachment level; KTH: keratinized tissue height; M: mesial; D: distal; MidB: midbuccal; MidL: midlingual; BL: baseline; T-3: 3 months; T-6: 6 months; T-15: 15 months postoperative.

Variables	Time of assessment	IR+PRF (n=15)	IR (n=17)	p
PD change-M	T-3	3.23±1.59	1.53±1.40	0.003
	T-6	3.30±2.02	1.71±1.60	0.019
	T-15	3.13±2.05	1.77±1.60	0.043
PD change-MidB	T-3	2.07±1.62	1.59±1.84	0.444
	T-6	2.20±1.42	1.71±1.90	0.416
	T-15	2.20±1.47	1.53±1.88	0.274
PD change-D	T-3	0.97±1.14	0.47±0.65	0.152
	T-6	0.93±1.37	0.35±1.01	0.180
	T-15	0.97±1.42	0.35±1.09	0.177
PD change-MidL	T-3	2.67±2.32	1.29±1.65	0.061
	T-6	2.80±2.40	1.29±1.61	0.043
	T-15	2.60±2.13	1.00±1.41	0.017
CAL gain-M	T-3	4.77±2.46	1.65±1.48	0.000
	T-6	4.60±2.93	1.68±1.81	0.002
	T-15	4.43±2.98	1.79±1.8	0.004
CAL gain-MidB	T-3	2.87±1.73	1.88±2.09	0.160
	T-6	2.93±1.58	1.94±2.33	0.175
	T-15	2.87±1.69	1.65±2.12	0.084
CAL gain-D	T-3	3.03±1.88	1.88±1.90	0.096
	T-6	2.77±2.24	1.68±1.92	0.148
	T-15	2.53±2.18	1.62±1.89	0.212
CAL gain-MidL	T-3	3.40±2.77	1.59±1.54	0.036
	T-6	3.40±2.85	1.29±1.83	0.017
	T-15	3.20±3.08	0.94±1.52	0.018
KTH change	T-3	0.47±1.41	0.76±2.02	0.636
	T-6	0.73±1.71	0.76±1.82	0.960
	T-15	0.80±1.61	0.65±1.69	0.796