Table 2.

(a) Soft-tissue health: PI, SBI, PPD. (b) Mean crestal bone level changes in mm

(a)
	PS		PM
	N	Mean ± SD	N	Mean ± SD
Plaque index (Score 0–3)
Loading	68	0.25 ± 0.46	69	0.06 ± 0.18
6-months	67	0.13 ± 0.22	67	0.06 ± 0.14
12-months	72	0.10 ± 0.21	70	0.09 ± 0.18
Sulcus bleeding index (Score 0–3)
Loading	68	0.05 ± 0.12	69	0.01 ± 0.06
6-months	67	0.22 ± 0.28	67	0.20 ± 0.32
12-months	72	0.21 ± 0.28	70	0.20 ± 0.29
Probing pocket depth in mm
Loading	64	1.78 ± 0.79	61	1.69 ± 0.51
6-months	62	2.18 ± 0.51	62	2.48 ± 0.59
12-months	72	2.21 ± 0.47	70	2.46 ± 0.51

(b)
	PS		PM		p-value
	N	Mean ± SD (mm)	N	Mean ± SD (mm)
Surgery to loading	70	−0.50 ± 0.42	63	−0.66 ± 0.70	Ns
Loading to 12-month	70	0.08 ± 0.41	61	−0.06 ± 0.49	Ns
Surgery to 12-month	72	−0.40 ± 0.46	70	−0.69 ± 0.68	0.004*

ns, non-significant; PM, platform matching; PS, platform switching; PI, plaque index; PPD, probing pocket depth; SBI, sulcus bleeding index.

No significant differences between study groups were observed.

^*Difference between study groups is statistically significant (independent student's t-test).