Mayo Clinic, "Dental Exam," http://www.mayoclinic.com/health/dental-exam/MY01097 (accessed March 22, 2010)

USA Today, "Many Americans Say They Forgo Routine Dental Care," http://www.usatoday.com/news/health/2009-03-10-dental-skip_N.htm (accessed March 22, 2010)

WebMD, "Dental X-Rays," http://www.webmd.com/oral-health/dental-x-rays (accessed March 23, 2010)

Perio.org, "Gum Disease Links to Heart Disease and Stroke," http://www.perio.org/consumer/mbc.heart.htm (accessed March 23, 2010)