Radiographic and Clinical Findings of Single-Visit Root Canal Treatments with Apical Enlargement in Necrotic Teeth: A Retrospective Cohort Study

Table 3

Distribution of the prognostic factors and their significance on the healed and nonhealed groups (post hoc values).

		Healed ()	Nonhealed ()	value	Post hoc power
		(%)	(%)
Preoperative
Preoperative pain
Absent	53	52 (98.1)	1 (1.9)	0.566^a	0.148
Present	37	35 (94.6)	2 (5.4)
Radiolucency
<2 mm	26	26 (100)	0 (0)	0.778^b	0.172
2–5 mm	36	34 (94.4)	2 (5.6)
>5 mm	26	25 (96.2)	1 (3.8)
Preoperative PAI score
1	1	1 (100)	0 (0)	0.751^b	0.134
2	3	3 (100)	0 (0)
3	57	55 (96.5)	2 (3.5)
4	13	13 (100)	0 (0)
5	16	15 (93.8)	1 (6.3)
Periodontal defects
Absent	85	82 (96.5)	3 (3.5)	0.999^a	0.071
Present	5	5 (100)	0 (0)
Root filling density
Dense and tapered	90	87 (96.7)	3 (3.3)	—	—
Voids present	0	0 (0)	0 (0)
Poorly condensed	0	0 (0)	0 (0)
Length of root filling
Adequate	90	87 (96.7)	3 (3.3)	—	—
Short	0	0 (0)	0 (0)
Long	0	0 (0)	0 (0)
Intraoperative
Sealer extrusion
No	49	49 (100)	0 (0)	0.091^a	0.486
Yes	41	38 (92.7)	3 (7.3)
Postoperative
Restoration at follow-up
Definitive filling	30	28 (93.3)	2 (6.7)	0.257^a	0.238
Crown	60	59 (98.3)	1 (1.7)
Postoperative signs/symptoms
Absent	89	87 (97.8)	2 (2.2)	0.033^,a	0.999
Present	1	0 (0)	1 (100)
Radiolucency
Absent	87	86 (98.9)	1 (1.1)	0.002^,a	0.999
Present	3	1 (33.3)	2 (66.7)
Post
Absent	61	58 (95.1)	3 (4.9)	0.548^a	0.228
Present	29	29 (100)	0 (0)

^aFisher’s exact test. ^bFisher-Freeman-Halton exact test.. . PAI: periapical index.