Generally speaking most people think that they need only to see a dentist twice a year, and for the most part that can hold true.  However opinions on that are starting to change.

Then National Institute for Health and Clinical Excellence (NICE) guidelines state the recommended interval between dental check-ups should be determined specifically for each patient, and tailored to meet their needs, on the basis of an assessment of disease levels and risk of or from dental disease.

Meaning you should see a dentist not by a standard stated time but what is best for your own oral health care needs.  Talk to your dentist and see what is best for you, if you have not been to a dentist within the last year or more, make sure to make a dental appointment. Oral health  is very important to maintain and poor oral health can also have negative effects on your over all health.  Also by having dental insurance it will help keep your dental care cost low.