1. Graduate Program in Dentistry, Lutheran University of Brazil, Canoas, Rio Grande do Sul, Brazil.
2. Department of Oral and Maxillofacial Surgery, Graduate Program in Dentistry, Lutheran University of Brazil, Canoas, Rio Grande do Sul, Brazil.
3. Department of Surgery and Orthopedics, Faculty of Odontology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
4. Department of Oral Medicine, Graduate Program in Dentistry, Lutheran University of Brazil, Canoas, Rio Grande do Sul, Brazil.