A toothache is pain or discomfort that occurs in or around a tooth. It can be caused by various factors such as tooth decay, infection, gum disease, injury, or teeth grinding. Symptoms may include throbbing pain, sensitivity to hot or cold, swelling, and difficulty chewing.

1 Cavities - Dental cavities are holes in teeth caused by tooth decay.

2 Cracked Tooth - From a hard bite to a hit on the face - many factors can cause a cracked tooth.

3 Bruxism - Teeth grinding or clenching is a habit that leads to severe toothaches.

4 Bacterial Infection - Abscessed tooth, a bacterial infection caused in decayed or broken tooth.

It's important to see a dentist if you have a toothache to determine the cause and receive appropriate treatment.