Pain When Biting Is Almost Never Random
Healthy teeth don’t hurt when you chew. When pressure causes pain, something has changed – and there are a handful of things that commonly cause it.
A cavity that’s reached the deeper layers of the tooth. Surface cavities usually don’t cause biting pain. But once decay gets closer to the nerve, pressure triggers a response. By this stage, a simple filling may no longer be enough.
A cracked tooth. This is one of the trickier ones, because cracks aren’t always visible – even on X-rays. The telltale sign is pain that comes specifically when you release the bite, not just when you press down. Cracks can worsen over time and eventually split a tooth if left alone.
A loose, cracked, or ill-fitting filling or crown. Old dental work can shift, crack, or allow bacteria to get underneath. When that happens, the tooth underneath becomes vulnerable – and biting down puts pressure right on that vulnerable spot.
An infection or abscess. If the pain is more of a throbbing ache, and especially if there’s any swelling, sensitivity to heat, or a bad taste in your mouth – an infection may be present. Dental infections don’t resolve on their own and need prompt attention.
Grinding or clenching. Many people grind their teeth at night without knowing it. Over time, this wears down enamel and inflames the ligaments around the tooth roots – making biting uncomfortable even when there’s no decay or crack.