Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS Brazilian Oral Research v.31 2017 Brazilian Oral Research Sociedade Brasileira de Pesquisa Odontológica (SBPqO) instacron:SBPQO Brazilian Oral Research, Volume: 31, Article number: e32, Published: 04 MAY 2017 Brazilian Oral Research, Vol 31, Iss 0 (2017)