Why does my tooth hurt when I bite down?
A tooth that hurts when you bite down usually has one of four causes: a cracked tooth, decay, a filling sitting too high, or inflammation around the root. None of these improve on their own, and early assessment is the difference between a simple fix and a complex one. Sunbury Dental House assesses bite pain for patients across Sunbury and the surrounding suburbs. Call (03) 8820 1809 to arrange an examination.
The most common causes of pain on biting
A cracked tooth. Cracks often cannot be seen by eye and may not show on a standard X-ray. The classic sign is a sharp pain on release of the bite rather than on the bite itself, and pain that comes and goes rather than aching constantly.
Tooth decay. A cavity that has reached the inner layers of the tooth makes the tooth sensitive to pressure. Pain on biting from decay usually builds gradually and may come with sensitivity to sweet foods.
A high filling or crown. A restoration that sits even a fraction of a millimetre too high concentrates your entire bite force onto one tooth. The tooth becomes bruised and tender. This is the simplest cause to fix, often requiring only a small adjustment.
Infection or inflammation at the root. When the nerve inside a tooth is inflamed or infected, the ligament holding the tooth becomes tender, and biting pressure hurts. This may follow deep decay, trauma, or an old restoration, and it can develop into an abscess if left.
Gum problems around the tooth. Food packed between teeth or gum disease around a specific tooth can also make biting uncomfortable.
How your dentist works out which one it is
Your dentist will examine the tooth, test your bite, check the gum around it, and take an X-ray where clinically indicated. A bite test on individual cusps helps locate a crack. Identifying the cause correctly matters, because each cause leads to a different treatment, from a simple bite adjustment through to a filling, a crown, or root canal treatment.
When bite pain becomes an emergency
Book promptly for any pain on biting. Treat it as an emergency if the pain is severe and constant, if your face or gum is swelling, if you develop a fever, or if the tooth has darkened. These signs point towards infection, and infection near the jaw needs same-day attention.
What happens if you ignore it
A small crack can spread until the tooth splits and cannot be saved. Shallow decay becomes deep decay that reaches the nerve. A bruised tooth from a high filling settles once adjusted, yet the grinding pattern it creates can damage neighbouring teeth. Bite pain is your tooth reporting a mechanical problem, and mechanical problems in teeth only move in one direction.
Frequently asked questions
Why does my tooth only hurt with certain foods?
Hard or chewy foods load the tooth in specific directions. Pain triggered by particular foods, especially on release, is a common sign of a crack.
Can a tooth hurt when biting without any visible damage?
Yes. Cracks and root inflammation frequently show nothing on the surface, which is why professional assessment is needed.
Will the pain go away by itself?
The pain may fade temporarily, particularly if the nerve is dying, but the underlying cause remains and usually worsens. Fading pain is not the same as a resolved problem.
How quickly can I be seen in Sunbury?
Call (03) 8820 1809 and our team will offer the earliest suitable appointment. Severe pain and swelling are prioritised for same-day assessment wherever possible.
Get bite pain assessed early
Sunbury Dental House has looked after the teeth of Sunbury families for more than 40 years. If biting down hurts, and you are in Sunbury, Diggers Rest, Bulla, Wildwood or Clarkefield, call (03) 8820 1809 and let a dentist find the cause while it is still a small problem.
