Having an infected tooth can lead to a variety of different issues. For some, simple tasks such as chewing food or drinking liquids can be incredibly painful as you put pressure on your teeth. We have even worked with many patients who told us that their sleep has been impacted because of increased levels of pain due to their teeth. If you find yourself relating to any of these issues, then you may have problems that require a tooth extraction.
Source: http://ourdentalcare.com/teeth-extractions/