An abscessed tooth is a common term used to describe an infection at the root of a tooth or between a tooth and the gums.
It is typically caused by bacteria that enter the tooth through either a dental cavity, chip or crack and spreads all the way down to the root tip. This leads to pain, inflammation and pockets of pus.
In most cases, an abscessed tooth is caused by severe tooth decay or gum disease (gingivitis). In addition, poor dental hygiene and a diet high in sugar, carbohydrates and sticky food increase your risk of developing this problem.
A throbbing and sharp toothache is a common symptom of an abscessed tooth.
Other signs and symptoms include pain when chewing food, increased sensitivity to hot or cold food and drink, change in taste senses, bad breath, swelling in your cheek, red and sore gums, difficulty opening your mouth, difficulty swallowing food, swollen lymph nodes under your jaw, fever, and general discomfort.