There are a few reasons you could need an extraction. Your tooth could have a risk of infection or already have an infection. You may need the tooth removed to help prevent infection. There could also be possible trauma that is not fixable, in which case the tooth may need to be extracted. It could also be removed if neither a crown or filling is possible. The area around the tooth will be numbed and the tooth will be removed. Once extracted, there are a few options to help fill the gap such as implants, bridges, or partials. Talk to your dentist to explore your best options.