The answer to this is letter dental cervix. The neck of the tooth is also known as the dental cervix. If you would look at the diagram, you would see that it is in between the crown and the root. It is important to keep all parts of the tooth healthy because if it would start to become infected, the condition of the tooth, the gums, and the other parts of the mouth may also get worse.
There are instances when tooth problems can also cause more serious health conditions such as cardiovascular health issues. People are recommended to visit their dentist twice a year for cleaning. Those who have dental issues may be required to see their dentist more often.