title: A population-based cohort study of oral health in South Brazil: The Porto Alegre Study.
abstract: Few population-based cohort studies have been established in Dentistry and this is especially true for Latin America. We conducted a population-based prospective study focusing on oral health in Porto Alegre, south Brazil, and herein we describe its methodology and discuss directions for further research. The cohort was established in 2001 using a multistage probability sample of 1,465 toothed and 121 edentulous subjects. A 5-year follow-up was performed in 2006 that included 755 individuals. The main aim of this study was to determine the pattern and risk factors for periodontal disease progression and tooth loss incidence. A full-mouth protocol was used including periodontal assessments at six sites per tooth. Primary outcomes were periodontal attachment loss and tooth loss. Oral mucosal lesions, dental plaque, gingivitis, supragingival calculus, probing depths, gingival recession, and dental caries were also assessed. This is the first population-based cohort study to focus on periodontal disease in Latin America. Findings will contribute to our understanding of the epidemiology of periodontal disease and provide valuable data for the planning and implementation of preventive and therapeutic strategies.
authors.affiliation: Department of Periodontics, Scholl of dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Alex Nogueira
authors.initials: AN
authors.lastname: Haas
authors.affiliation: Department of Periodontics, Scholl of dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Eduardo José
authors.initials: EJ
authors.lastname: Gaio
authors.affiliation: Department of Periodontics, Scholl of dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Marcius Comparsi
authors.initials: MC
authors.lastname: Wagner
authors.affiliation: Department of Periodontics, Scholl of dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Fernando Silva
authors.initials: FS
authors.lastname: Rios
authors.affiliation: Department of Periodontics, Scholl of dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Ricardo dos Santos Araujo
authors.initials: Rdos S
authors.lastname: Costa
authors.affiliation: Department of Periodontics, Scholl of dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Cassiano Kuchenbecker
authors.initials: CK
authors.lastname: Rösing
authors.affiliation: Department of Periodontics, Scholl of dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Rui Vicente
authors.initials: RV
authors.lastname: Oppermann
authors.affiliation: Periodontal Diagnostics Research Laboratory, Department of Periodontology and Oral Implantology, Temple University, Philadelphia, Pennsylvania, USA.
authors.forename: Jasim
authors.initials: J
authors.lastname: Albandar
authors.affiliation: Laboratory for Applied Periodontal and Craniofacial Regeneration, Departments of Periodontics and Oral Biology, College of Dental Medicine, Georgia Regents University, Augusta, Georgia, USA.
authors.forename: Cristiano
authors.initials: C
authors.lastname: Susin
mesh_terms: D001938:Brazil / Q000453:epidemiology; D015331:Cohort Studies; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D009909:Oral Health; D012307:Risk Factors