It is important to realize that your dentist sees much more than just your teeth. Some health-related conditions that show up in the mouth including: diabetes, oral cancer, temporomandibular disorder (TMJ), HIV/AIDS, thyroid problems, iron deficiency/anemia, leukemia, and eating disorder (bulimia and anorexia). Communication with your dentist is vital. During your visit, talk to your dentist about your ongoing health concerns so that she may help you. Your dentist may adjust your treatment if you have certain medical conditions, use certain prescription drugs or are currently undergoing medical treatment.