Table 2.

Recall Rates, Failure Modes, Survival Rates, and Success Rates Recorded in Experimental Groups over a 48-month Observation Period

Residual Coronal Dentin	Luting Agent		Baseline	6 mo	12 mo	24 mo	36 mo	48 mo
Group 1: >50%	Gradia Core	Recall rate	30/30 (100%)
		Mode and % of failure	0/30 (0%)	1 PAL 1/30 (3.3%)		2 PAL 2/30 (6.6%)		2 PAL 1 PoFr 3/30 (10%)
		Success rate	30/30 (100%)	29/30 (96.6%)		28/30 (93.3%)		27/30 (90%)
		Survival rate	30/30 (100%)	30/30 (100%)		30/30 (100%)		30/30 (100%)
	GCem Automix	Recall rate	30/30 (100%)
		Mode and % of failure	0/30 (0%)	1 PAL 1/30 (3.3%)	1 PAL 1 PoDe 2/30 (6.6%)	1 PAL 2 PoDe 3/30 (10%)	1 PAL 3 PoDe 1 RoFr 5/30 (16.6%)	2 PAL 3 PoDe 2 RoFr 7/30 (23.3%)
		Success rate	30/30 (100%)	29/30 (96.6%)	28/30 (93.3%)	27/30 (90%)	25/30 (83.3%)	23/30 (76.6%)
		Survival rate	30/30 (100%)	30/30 (100%)	30/30 (100%)	30/30 (100%)	29/30 (96.6%)	28/30 (93.3%)
Group 2: ≤50%	Gradia Core	Recall rate	30/30 (100%)
		Mode and % of failure	0/30 (0%)		1 PAL 2 PoDe 3/30 (10%)	3 PAL 2 PoDe 1 PoFr 6/30 (20%)	3 PAL 2 PoDe 1 PoFr 2 RoFr 8/30 (26.6%)	3 PAL 2 PoDe 1 PoFr 3 RoFr 9/30 (30%)
		Success rate	30/30 (100%)		27/30 (90%)	24/30 (80%)	22/30 (73.3%)	21/30 (70%)
		Survival rate	30/30 (100%)		30/30 (100%)	30/30 (100%)	28/30 (93.3%)	27/30 (90%)
	GCem Automix	Recall rate	30/30 (100%)
		Mode and % of failure	0/30 (0%)	1 PAL 1/30 (3.3%)	1 PAL 1 PoDe 2/30 (6.6%)	1 PAL 2 PoDe 3/30 (10%)	1 PAL 5 PoDe 2 RoFr 8/30 (26.6%)	2 PAL 5 PoDe 4 RoFr 11/30 (36.6%)
		Success rate	30/30 (100%)	29/30 (96.6%)	28/30 (93.3%)	27/30 (90%)	22/30 (73.3%)	19/30 (63.3%)
		Survival rate	30/30 (100%)	30/30 (100%)	30/30 (100%)	30/30 (100%)	28/30 (93.3%)	26/30 (86.6%)

Failure modes: PAL= periapical lesion; PoDe = post debonding; PoFr = post fracture; RoFr = root fracture.