Table 2.

Prognostic factors affecting treatment outcome

		Final outcome								Chi-square
		Healed		Healing		Persistent disease		Total
		n	%	n	%	n	%	n	%	Chi-square	P
Root-end filling material	Super-EBA	48	85.7	2	3.6	6	10.7	56	100	M	0.639
	MTA	51	91.1	1	1.8	4	7.1	56	100
	Total	99	88.4	3	2.7	10	8.9	112	100
Age	16–30	44	68	1	2	5	10	50	100	M	0.819
	31–50	40	86.9	2	4.4	3	6.7	45	100
	51–65	15	86.2	0	0	2	11.8	17	100
	Total	99	86.4	3	2.7	10	8.9	112	100
Gender	Female	42	91.3	0	0	4	8.7	46	100	M	0.401
	Male	57	86.4	3	4.5	6	9.1	66	100
	Total	99	88.4	3	2.7	10	8.9	112	100
Tooth location	Max.	84	96.6	0	0	3	3.4	87	100	M	0.0001
	Mand.	15	60	3	12	7	28	25	100
	Total	99	88.4	3	2.7	10	8.9	112	100
Tooth location	Anterior	85	93.4	2	2.2	4	4.4	91	100	M	0.0006
	Posterior	14	66.7	1	4.8	6	28.6	21	100
	Total	99	88.4	3	2.7	10	8.9	112	100
Tooth location	Max. anterior	74	97.4	0	0	2	2.6	76	100	M	0.0001
	Max. posterior	10	90.9	0	0	1	9.1	11	100
	Mand. anterior	11	73.3	2	13.3	2	13.3	15	100
	Mand posterior	4	40	1	10	5	50	10	100
	Total	99	88.4	3	2.7	10	8.9	112	100