1. Department of Periodontology, Faculty of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
2. Orthodontic Private Practice, Mexico City, Mexico
3. Post-Graduate Program in Rehabilitation Sciences, UNINOVE – Universidade Nove de Julho, São Paulo, Brazil
4. Editor Journal of the Mexican Dental Association, Mexico City, Mexico
5. Department of Operative Dentistry and Dental Materials, Federal University of Uberlandia, Uberlândia, Brazil
6. Private Practice, Mexico City, Mexico
7. Division of Periodontology, University of São Paulo, São Paulo, Brazil