A teeth infection occurs when another organism enters your body and causes disease. The organisms that cause infections are very diverse and can include things like viruses, bacteria, fungi, and parasites.
You can acquire an infection in many different ways, such as directly from a person with an infection, via contaminated food or water, and even through the bite of an insect.
A sore or throbbing tooth is one of the first signs of a problem. Left untreated, what may have been an uncomplicated issue can become infected, resulting in pain, redness, swelling and a high fever that indicates your body is attempting to fight the infection. You might also notice a foul taste in your mouth or bad breath that won’t go away with brushing or rinsing with a mouthwash. In some cases, you may have a broken tooth, but infections can often go undetected deep within the core of teeth, without any outward signs other than pain and swelling.