Tooth loss and associated factors in the elderly in Cruz Alta, Brazil: a crosssectional study.

The aim of this study was to evaluate severe tooth loss and associated factors among the elderly. A homebased crosssectional study, using random probabilistic sampling, was conducted with elderly persons from Cruz Alta, Rio Grande do Sul, Brazil. Oral health was examined and a structured questionnaire was answered.

Association between history of orthodontic treatment and sociodemographic factors in adolescents.

The aim of this study was to assess history of orthodontic treatment and its determinants in adolescents. This was a crosssectional study conducted in the city of Passo Fundo, Brazil, on a representative sample of adolescents aged 15 to 19 years, regularly enrolled in 20 high schools. A structured questionnaire was applied to assess demographic, behavioral and health variables.