Resources
- American Academy of Cosmetic Dentistry® (AACD)
http://www.aacd.com 
- American Dental Association (ADA)
http://www.ada.org 
- Colgate®
http://www.colgate.com 
- Crest®
http://www.crest.com 
- Sonicare®
http://www.sonicare.com 
- ZOOM!®
http://www.zoomnow.com 
