Table 3: Mean difference between radiovisiography length and length measured by electronic measurement techniques

				Length				Difference from RVG				Significance of difference (paired t-test)
Sl. no.		Method		Mean		SD		Mean		SD		t		p
1		RVG		14.09		1.47		–		–		–		–
2		Dentaport ZX		14.08		1.61		-0.01		0.74		0.074		0.94
3		Propex II		14.05		1.51		-0.04		0.45		0.526		0.60

SD: Standard deviation; RVG: Radiovisiography