Table 3.

Comparison of CEJ measurements by using close and open method (mean ± SD)

Sites	CEJ measurement		t - value	P value	Significance
	Open method	Close method
Midbuccal N = 46	6.02±1.64	6.17±1.50	0.464	0.64	NS
Midlingual N = 45	5.55±1.14	5.43±1.17	0.500	0.62	NS
Mesio buccal N = 46	5.67±1.42	5.72±1.58	0.138	0.89	NS
Disto buccal N = 44	5.51±1.35	5.62±1.39	0.356	0.72	NS
Mesiolingual N = 46	5.30±1.29	5.5±1.47	0.676	0.50	NS
Distolingual n = 6	5.5±0.44	5.83±0.75	0.932	0.37	NS
All sites n = 232	5.61±1.37	5.69±1.43	0.630	0.53	NS

P < 0.05, NS - Non significant.