What causes toothache?

Nerves: Pain is a result of your nerves sending signals to your brain no matter where it is. There are lots of reasons for tooth pain. Cavities, broken teeth, infection, trauma, unhealthy gums, exposed roots, etc. If you are having a toothache, your dentist should be able to determine the cause after a thorough examination and diagnosis.

Ususally bacteria: 95% of the time bacteria have invaded the layers of a tooth and irritated or infected a tooth pulp (nerve). This can happen with a cavity, a leaking filling or crown or a fracture of a tooth. Once the bacteria have entered the tooth someone must remove the bacteria. If the tooth is sensitive due to a crack or fracture you may have pain not associated with bacteria, but it will still require tx.

Several things: Decay, cracks, deep fillings, trauma, abrasion, erosion of tooth structure, gum recession, multiple work on a tooth. In short anything that causes the pulp of the tooth to become inflamed!

Deep Cavity: Sugars found in diet are metabolized by bacteria that adhere on tooth surface forming acid and breakdown tooth structure eventually causing the tissue (pulp) to become inflamed or infected causing tooth pain.

Many causes: A toothache can be brought on by trauma, decay, gum and bone support problems, sinus infections, infections, etc. The nerve (pulp) inside the tooth may become inflamed/irritated and create pain and ache, either temporarily or for long duration. If there is doubt, go see a dentist.

Multiple causes: A toothache may result from deep decay, a crack, a tooth that has begun to abscess, a tooth with a faulty filling or restoration, a food impaction under the gum, or from a gum abscess. There may be other causes but these are the most common.

In addition: N addition to the reasons cited by adr venincasa, add para functional habits, such as clenching or grinding, and uneven pressure from malposed teeth, as possible causes of toothache.

Toothache: Deep tooth decay and gum disease are the usual suspects