1. School of Dentistry, Unicastelo, Descalvado, Brazil.
2. Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sa∼o Paulo State University–Unesp, Araraquara, Brazil.
3. Department of Periodontology, Federal University of Uberlândia, Uberlândia, Brazil.
4. Department of Pathology and Physiology, School of Dentistry at Araraquara, Sa∼o Paulo State University–Unesp, Araraquara, Brazil.