1. Department of Morphology, Stomatology and Physiology; University of São Paulo - Ribeirão Preto School of Dentistry; Ribeirão Preto; Brazil
2. Department of Stomatology; University of São Paulo - Bauru School of Dentistry; Bauru; Brazil
3. Department of Periodontology; Oral Imaging Center - Katholieke Universiteit Leuven; Leuven; Belgium