1. Department of Dentistry; Federal University of the Jequitinhonha and Mucuri Valleys; Diamantina Minas Gerais Brazil
2. Department of Dentistry; Paraíba State University; Araruna Paraíba Brazil
3. Department of Basic Sciences; Federal University of the Jequitinhonha and Mucuri Valleys; Diamantina Minas Gerais Brazil