An abscessed tooth is a common term used to describe an infection at the root of a tooth or between the gum and a tooth. This infection causes severe tooth decay and can be caused by bacteria that enters the tooth (through a dental cavity, chip, or crack) and spreads all the way down to the root tip.
If left untreated, it can lead to severe pain and inflammation. The affected tooth loses its ability to combat infections which can reach the pulp chamber of the tooth. When the pulp in the root tooth dies, pain decreases. However, this doesn