Full text: Available Index: LILACS (Americas) Main subject: Research Design / Dental Health Surveys / Data Interpretation, Statistical / Conflict of Interest Limits: Humans Country/Region as subject: South America / Brazil Language: Portuguese Journal: Cad. saúde pública Journal subject: Public Health / Toxicology Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Fundação Oswaldo Cruz/BR