The huge amount of information available on the World Wide Web can be confusing. The following links are highly recommended for reliability and accuracy.
The American Academy of Periodontology
The worlds leading authority in Periodontology.
The American Dental Association
ADA ONLINE, the American Dental Associations Internet site.
The American Dental Hygienists Association
A good source for up to date and reliable information.
The National Library of Medicine
United States National Library of Medicine. An excellent site for all manner of medical and dental information