1. Department of Conservative Dentistry; Faculty of Dentistry; Universidad de Chile; Santiago Chile
2. Laboratory of Periodontal Biology; Faculty of Dentistry; Universidad de Chile; Santiago Chile
3. Institute for Research in Dental Sciences; Universidad de Chile; Santiago Chile
4. Department of Chemical Pharmacology and Toxicology; Faculty of Chemistry and Pharmaceutical Sciences; Universidad de Chile; Santiago Chile
5. Department of Pathology; Faculty of Dentistry Universidad de Chile; Santiago Chile