A dentist is someone who is involved in the medical field of dentistry which involves the mouth, teeth, gums and related areas. Dentists can also specialize in different areas of dentistry and become a consultant in their chosen field. Some studies have shown that diseases relating to the teeth can be indicative of some health problems, or an indicator that certain health problems may be a risk in a particular patient. The health of the mouth, including the teeth, is essential to general health and dentists can help with the improvement of general health by encouraging and assisting patients in maintaining healthy teeth. General health & nutrition advice along with specific dental treatment can help support a healthy mouth.