Table 1. Sensitivity and Specificity Values for Detection of Vertical Root Fracture by the Observers (%).

Position	Observer	Deterministic Sensitivity	Probabilistic Sensitivity	Deterministic Specificity	Probabilistic Specificity
3 O’clock
	First observer	3.3	20.0	53.0	46.7
	Second observer	6.0	36.7	50.0	73.3
6 O’clock
	First observer	7.1	28.5	12.5	50.0
	Second observer	0	46.4	37.5	59.4
9 O’clock
	First observer	6.7	33.4	16.7	63.4
	Second observer	13.3	43.3	40.0	43.3
12 O’clock
	First observer	13.3	36.6	16.7	60.0
	Second observer	10.0	36.7	30.0	40.0
Center
	First observer	13.3	33.3	26.7	73.4
	Second observer	16.7	33.3	36.7	56.7