1. Clinic for Preventive Dentistry, Periodontology and Cariology, University of Zürich, Zürich, Switzerland.
2. Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil.
3. Restorative Dentistry and Dental Materials, School of Dentistry, Camilo Castelo Branco University São Paulo, São Paulo, Brazil.
4. Special Laboratory of Lasers in Dentistry, Faculdade de Odontologia, University of São Paulo, São Paulo, Brazil.