• http://www.who.int/en/   World Health Organization
• http://www.ada.org.au/ Australian Dental Association
• http://www.ada.org/index.asp   American Dental Association
• http://www.bda-dentistry.org.uk/   British Dental Association
• http://www.azda.org/ Arizona Dental Association
• http://sdm.uchc.edu/   University of Connecticut
• http://www.cdaonline.org/ Colorado Dental Association
• http://www.dental.washington.edu/ University of washington
• http://www1.ocn.ne.jp/~katodent/　KATO DENTAL OFFICE JAPAN

■Orthodontics organizations

• http://www.braces.org/ American Association of Orthodontists
• Australian Society of Orthodontists  Australian Society of Orthodontists
• http://www.orthodontists.org.nz/ New Zealand Association of Orthodontists.
• http://www.aio.it/   Associazione Italiana Odontoiatri
• http://www.jos.gr.jp/   japan orthodontic society