Postoperative Pain after Root Canal Treatment: A Prospective Cohort Study

Table 2

Incidence and intensity of post-endodontic pain (PEP) (Scale 1–5), 6 and 18 h after treatment.

	6 hours		18 hours
Treatment groups	Incidence; number (%)	Intensity; mean ± SD	Incidence number (%)	Intensity; mean ± SD
Vital pulp	90 (63.8)	2.46±1.4	73 (51.8)	2.00±1.2
Necrotic pulp	20 (38.5)	1.78±1.2	18 (34.6)	1.56±0.9
Retreatment	40 (49.4)	1.89±1.1	36 (44.4)	1.81±1.1
𝑃 value	0.003	0.001	NS	NS