title: Prevalence and risk factors of apical periodontitis in endodontically treated teeth in a selected population of Brazilian adults.
abstract: The aim of this study was to assess the prevalence and risk factors of apical periodontitis in endodontically treated teeth in a selected population of Brazilian adults. A total of 1,372 periapical radiographs of endodontically treated teeth were analyzed based on the quality of root filling, status of coronal restoration and presence of posts associated with apical periodontitis (AP). Data were analyzed statistically using odds ratio, confidence intervals and chi-square test. The prevalence of AP with adequate endodontic treatment was low (16.5%). This percentage dropped to 12.1% in cases with adequate root filling and adequate coronal restoration. Teeth with adequate endodontic treatment and poor coronal restoration had an AP prevalence of 27.9%. AP increased to 71.7% in teeth with poor endodontic treatment associated with poor coronal restoration. When poor endodontic treatment was combined with adequate coronal restoration, AP prevalence was 61.8%. The prevalence of AP was low when associated with high technical quality of root canal treatment. Poor coronal restoration increased the risk of AP even when endodontic treatment was adequate (OR=2.80; 95%CI=1.87-4.22). The presence of intracanal posts had no influence on AP prevalence.
authors.affiliation: School of Dentistry, Federal University of Goiás, Goiânia, GO, Brazil. estrela3@terra.com.br
authors.forename: Carlos
authors.initials: C
authors.lastname: Estrela
authors.forename: Cláudio Rodrigues
authors.initials: CR
authors.lastname: Leles
authors.forename: Augusto César Braz
authors.initials: AC
authors.lastname: Hollanda
authors.forename: Marcelo Sampaio
authors.initials: MS
authors.lastname: Moura
authors.forename: Jesus Djalma
authors.initials: JD
authors.lastname: Pécora
mesh_terms: D000293:Adolescent; D000328:Adult; D001938:Brazil / Q000453:epidemiology; D003430:Cross-Sectional Studies; D003793:Dental Restoration, Permanent / Q000592:standards / Q000706:statistics & numerical data; D016021:Epidemiologic Studies; D006801:Humans; D008875:Middle Aged; D010485:Periapical Periodontitis / Q000453:epidemiology*; D011176:Post and Core Technique / Q000592:standards / Q000706:statistics & numerical data; D015995:Prevalence; D016300:Radiography, Bitewing; D012307:Risk Factors; D012387:Root Canal Filling Materials / Q000592:standards / Q000627:therapeutic use; D012389:Root Canal Obturation / Q000592:standards / Q000706:statistics & numerical data; D012390:Root Canal Therapy / Q000592:standards / Q000706:statistics & numerical data*; D055815:Young Adult
chemical_list: D012387:Root Canal Filling Materials