1. Laboratory of Laser in Odontology, School of Dentistry, USP, Sãu Paulo, Brazil
2. Department of Endodontics, School of Dentistry, Hadassah University, Jerusalem, Israel
3. Department of Endodontics, School of Dentistry, USP, S. Paulo, Brazil
4. Institute of Energetic and Nuclear Research, IPEN, USP, S. Paulo, Brazil
5. Professional Master Course of Lasers in Dentistry, IPEN, FOUSP, São Paulo, Brazil
6. Department of Restorative Dentistry, School of Dentistry, USP, S. Paulo, Brazil