•Purpose: evaluate the frequency and intensity of postobturation pain and associated factors in adolescents undergoing one- and two-visit root canal treatment.
•N= 121 teeth
- Patients aged between 11 -18 years; with lower first or second permanent molars presenting complete root formation and a necrotic pulp with or without symptoms, randomly assigned into two treatment groups: one- and two-visit (interappointment calcium hydroxide paste 10-12 days). Randomization (double-blind method)
- 5.25% sodium hypochlorite (NaOCl) and neutralized with 5% sodium thiosulphate (Na2S2O3).
- All cases were obturated with gutta-percha using a lateral compaction filling technique with zinc oxide-eugenol sealer.
- Postobturation pain was recorded on a visual analogue scale after 6, 12, and 24 h (first day) up to 9 days.
Most highlighted Results:
1.The frequencies of postobturation pain were 10.5% for the one-visit group and 23.0% for the two-visit group, but no statistically significant difference was found.
2.The intensity and duration of pain were similar for both treatment groups.
3.the frequency of flare- ups was 1.75% in the one-visit group and 1.65% in the two-visit group.
4.Postobturation pain was significantly associated with the presence of preoperative pain and a positive culture at the time of obturation.
Effective micro- biological control and the presence of preoperative pain may influence the postobturation pain.