Extractions are the permanent removal of a tooth from the mouth. Teeth may need to be extracted for a number of reasons, including; orthodontic reasons, decayed teeth, or teeth that will not fall out on their own.
A crowded mouth sometimes dentists pull teeth to prepare the mouth for orthodontia. The goal of orthodontia is to properly align the teeth, which may not be possible if your teeth are too big for your mouth. Likewise, if a tooth cannot erupt, because there is no room in the mouth for it, the tooth may be extracted.
Infection: If tooth decay or damage extends into the nerve, bacteria can enter the pulp and lead to an infection. In some cases if the infection is severe enough, an extraction is indicated.
Primary tooth will not come out on its own: The permanent teeth should ideally erupt right underneath the baby tooth it follows. However, sometimes the permanent tooth takes a different path, and does not resorb the baby tooth the way it should. This can often result in a need to extract the baby tooth.
After an extraction, It is normal for a minor amount of bleeding to occur after an extraction. The bone will ultimately fill under the extraction site. There are specific instructions that should be followed after an extraction to promote healing.