1. Graduate Program in Dental Science Federal University of Santa Maria (UFSM) Santa MariaBrazil
2. Medical and Dental Center of the Brazilian Army Santa MariaBrazil
3. Department of Stomatology Federal University of Santa Maria (UFSM) Santa MariaBrazil
4. Graduate Program in Dentistry School of Health and Life Sciences Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS) Porto AlegreBrazil
5. Medical and Dental Center of the Military Police Porto AlegreBrazil
6. Universidade Franciscana (UFN) Santa Maria Brazil