The Wall Street Journal explains why some people might need to go more frequently.

The usual six-month dental checkup is designed mostly for people with very average teeth and lifestyles.

That means no smoking, not eating too many sweets, and good dental hygiene.

For some, its best to go more often though.

Conversely, if youre in your 20s-30s and otherwise healthy, once a year might be enough.

Do you gotta See a Dentist Twice a Year?| The Wall Street Journal

Photo byJeremy Miles.