title: Postoperative pain and associated factors in adolescent patients undergoing two-visit root canal therapy.
abstract: This prospective study investigated the frequency and intensity of postoperative pain and identified associated factors in adolescents undergoing two-visit root canal therapy. Sixty-four patients aged 11 to 18 years old presenting with molars with pulp necrosis were assigned consecutively to two visits (plus an interappointment dressing using calcium-hydroxide paste). Pain intensity was recorded on a visual analogue scale (VAS) of 0-5. Data were analysed using multivariate logistic regression. The frequency of postoperative pain was 32.8% (21/64), with intensities of VAS 1 and VAS 2 in 81%, VAS 3 in 14.3% and VAS 4 in 4.7% of the 21 cases in which it was experienced. Spontaneous preoperative pain (odds ratio (OR) = 6.60; 95% confidence interval (CI) = 1.61-26.97; P = 0.009) and absence of apical perodontitis (OR = 5.65; 95% CI = 1.34-23.87; P = 0.01) were associated with postoperative pain. The frequency of postoperative pain was high, but the intensity, in general, was low, including flare-ups. The presence of spontaneous preoperative pain and absence of apical periodontitis increase the probability of suffering from postoperative pain.
authors.affiliation: Department of Medical Clinic, School of Medicine, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil. risso.p.a@gmail.com
authors.forename: Patrícia
authors.initials: P
authors.lastname: de Andrade Risso
authors.forename: Antonio José Ledo Alves
authors.initials: AJ
authors.lastname: da Cunha
authors.forename: Marcos César Pimenta
authors.initials: MC
authors.lastname: de Araujo
authors.forename: Ronir Raggio
authors.initials: RR
authors.lastname: Luiz
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D003790:Dental Pulp Necrosis / Q000150:complications / Q000473:pathology / Q000628:therapy*; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008963:Molar / Q000473:pathology / Q000601:surgery; D016017:Odds Ratio; D009819:Office Visits; D010147:Pain Measurement; D010149:Postoperative Pain / Q000150:complications / Q000517:prevention & control*; D010485:Periapical Periodontitis / Q000150:complications / Q000473:pathology; D011446:Prospective Studies; D012390:Root Canal Therapy / Q000009:adverse effects* / Q000379:methods