Why six-month check-ups still matter when nothing hurts

Enamel has no nerve supply. A cavity can work its way through the outer layer of a tooth for a year or more without producing any sensation at all. By the time cold water or biting pressure causes a jolt, decay has usually reached the softer dentine underneath and sometimes the nerve itself.

This is the central reason routine exams exist. They are not a formality — they are the only reliable way to find problems during the window where a small filling solves them.

A thorough exam covers far more than cavities. Gum measurements reveal whether attachment is being lost. Wear facets show grinding. Cracked cusps, failing margins on old fillings, and soft-tissue changes all get assessed and, importantly, compared with the last visit.

Not necessarily. Patients with excellent hygiene, no history of gum disease and low decay risk may do well at longer intervals. Patients with periodontal disease, dry mouth from medication, or frequent decay often need three- or four-month hygiene visits.

The honest answer is that the interval should be set by risk, not habit — and that is a conversation worth having at your next visit.