title: Factors associated with endodontic flare-ups: a prospective study.
abstract: The purpose of this prospective study was to assess the incidence of flare-ups (a severe problem requiring an unscheduled visit and treatment) among patients who received endodontic treatment by the two authors in their respective practices during a period of one year, and also to examine the correlation with pre-operative and operative variables. The results showed an incidence of 1.58% for flare-ups from 1012 endodontically treated teeth. Statistical analysis using the chi-square test (P<0.05) indicated that flare-ups were found to be positively correlated with multiple appointments, retreatment cases, periradicular pain prior to treatment, presence of radiolucent lesions, and patients taking analgesic or anti-inflammatory drugs. In contrast, there was no correlation between flare-up, and age, sex, different arch/tooth groups and the status of the pulp.
authors.affiliation: Ensino Odontológico Institute, São Paulo, Brazil.
authors.forename: N
authors.initials: N
authors.lastname: Imura
authors.forename: M L
authors.initials: ML
authors.lastname: Zuolo
mesh_terms: D000208:Acute Disease; D000328:Adult; D017677:Age Distribution; D000698:Analgesia; D016009:Chi-Square Distribution; D003788:Dental Pulp Diseases / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology / Q000628:therapy; D005157:Facial Pain / Q000209:etiology; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D010149:Postoperative Pain / Q000453:epidemiology* / Q000209:etiology; D010483:Periapical Diseases / Q000453:epidemiology / Q000209:etiology / Q000628:therapy; D011446:Prospective Studies; D012086:Reoperation; D012390:Root Canal Therapy / Q000009:adverse effects* / Q000379:methods; D017678:Sex Distribution; D014098:Toothache / Q000209:etiology*