1. Laser Center, School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
2. Oral Pathology School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
3. Instituto de Ciências da Saúde, Federal University of Bahia, Salvador, Bahia, Brazil
4. Dental Public Health, School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
5. Universidade Camilo Castelo Branco, São José dos Campos, São Paulo, Brazil
6. Instituto Nacional de Ciência e Tecnologia de Óptica e Fotônica, São Carlos, São Paulo, Brazil.