1. Department of Morphology; Physiology, and Basic Pathology, Ribeirao Preto Dentistry Faculty, University of São Paulo; Ribeirao Preto SP 14040-904 Brazil
2. CICO Research Centre, Dental School, Universidad De La Frontera, Temuco; Chile
3. Department of Anatomy; Institute of Biomedical Sciences, University of Sao Paulo; 2415 Avenida Professor Lineu Prestes Sao Paulo SP 05508-900 Brazil