title: Periodontal attachment loss in an untreated isolated population of Brazil.
abstract: BACKGROUND
  The aim of this study was to assess the prevalence, extent, and severity of clinical attachment loss (CAL) and to investigate the association of demographic, socioeconomic, and behavioral risk indicators with CAL in an untreated isolated population in Brazil.
  
  
  METHODS
  All subjects aged > or =12 years were identified by a census. Participants were submitted to a full-mouth clinical examination of six sites per tooth and were interviewed using a structured, written questionnaire.
  
  
  RESULTS
  Among the 214 subjects who were interviewed and examined clinically, CAL > or =5 mm in at least one site was observed in 8% of the 12- to 19-year-olds and in all dentate subjects > or =50 years of age; the age-dependent prevalence of CAL > or =7 mm in at least one site ranged from 5% among 12- to 19-year-olds to 83% among subjects > or =50 years old. Multivariate analysis identified plaque (odds ratio [OR] = 2.8), supragingival calculus (OR = 2.9 to 10.6), age > or =30 years (OR = 11.4), and smoking (OR = 2.4) as risk indicators for CAL > or =5 mm and smoking (OR = 8.2) as a risk indicator for CAL > or =7 mm.
  
  
  CONCLUSIONS
  CAL is highly prevalent in this isolated population. The high occurrence of CAL in young age groups and the confirmation of traditional risk indicators for CAL in this study suggest that other factors, such as host susceptibility, may be needed to explain the high levels of CAL found. Age and behavioral factors were risk indicators associated significantly with the CAL found in this population and may be useful indicators of high-risk subjects for periodontal diseases.
authors.affiliation: Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil. pcorraini@usp.br
authors.forename: Priscila
authors.initials: P
authors.lastname: Corraini
authors.forename: Vibeke
authors.initials: V
authors.lastname: Baelum
authors.forename: Cláudio Mendes
authors.initials: CM
authors.lastname: Pannuti
authors.forename: Alessandro Nautili
authors.initials: AN
authors.lastname: Pustiglioni
authors.forename: Giuseppe Alexandre
authors.initials: GA
authors.lastname: Romito
authors.forename: Francisco Emílio
authors.initials: FE
authors.lastname: Pustiglioni
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001938:Brazil / Q000453:epidemiology; D002648:Child; D003728:Dental Calculus / Q000453:epidemiology; D003729:Dental Care / Q000706:statistics & numerical data; D003773:Dental Plaque / Q000453:epidemiology; D004522:Educational Status; D005260:Female; D005889:Gingival Recession / Q000453:epidemiology; D006801:Humans; D007182:Income / Q000706:statistics & numerical data; D007407:Interviews as Topic; D008297:Male; D008875:Middle Aged; D009910:Oral Hygiene / Q000706:statistics & numerical data; D017622:Periodontal Attachment Loss / Q000453:epidemiology*; D010514:Periodontal Pocket / Q000453:epidemiology; D010808:Physical Examination; D015995:Prevalence; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology