TABLE 3.

Univariate associations between clinical characteristics and adverse outcomes three to five years after primary endodontic therapy in general practice.

FACTOR	YES NO. (%)	NO NO. (%)	ODDS RATIO	CONFIDENCE INTERVAL	P VALUE	OVERALL P VALUE
Initial Diagnosis and Periapical Pathosis (PP)
Irreversible pulpitis without PP	78 (13.3)	508 (86.7)	1.00	—*	—
Necrotic pulp without PP	30 (14.2)	182 (85.8)	1.07	0.68–1.69	.76	< .01
Irreversible pulpitis with PP	51 (25.6)	148 (74.4)	2.24	1.51–3.34	< .01
Necrotic pulp with PP	91 (29.2)	221 (70.8)	2.68	1.91–3.77	< .01
Type of Provider
General practitioner	174 (19.5)	717 (80.5)	1.00	—	—	.61
Specialist	77 (18.3)	343 (81.7)	0.93	0.69–1.25	.61
Visits Required to Complete Endodontic Therapy
One	119 (18.0)	543 (82.0)	1.00	—*	—*	.41
Two	105 (21.0)	395 (79.0)	1.21	0.91–1.63	.120
Three or more	27 (18.1)	122 (81.9)	1.01	0.64–1.60	.97
Tooth Type
Canine	7 (11.7)	53 (88.3)	1.00	—	—
Incisor	26 (17.9)	119 (82.1)	1.65	0.68–4.05	.27	< .01
Premolar	55 (14.7)	319 (85.3)	1.31	0.56–3.02	.53
Molar	163 (22.3)	569 (77.7)	2.17	0.97–4.86	.06
Number of Canals
Single canal	58 (14.4)	344 (85.6)	1.00	—	—	< .01
Multiple canals	193 (21.2)	716 (78.8)	1.60	1.16–2.20	< .01
Antibiotic Prescribed
No	162 (17.8)	748 (82.2)	1.00	—	—	.06
Yes	89 (22.3)	310 (77.7)	1.33	0.99–1.77	.06
Restoration Type
Full/partial crown or onlay	166 (17.8)	766 (82.2)	1.00	—	—	.12
Composite/amalgam restoration	80 (21.6)	291 (78.4)	1.27	0.94–1.71	.12
Post Replaced
Yes	126 (17.3)	602 (82.7)	1.00	—	—	.06
No	125 (21.4)	458 (78.6)	1.30	0.99–1.72	.06
Periodontal Involvement
No	175 (15.4)	961 (84.6)	1.00	—	—	< .01
Yes	33 (25.6)	96 (74.4)	1.89	1.23–2.89	< .01
Time to Restoration, Mean/Median (No. [Standard Deviation])	5.3/1.7 (246 [8.9])	5.2/1.8 (1,054 [8.8])	1.00	0.99–1.02	.88	.88

^*Reference group.