Tooth extractions can range from a single tooth to multiple teeth. The need to extract a tooth may vary based upon the disease state of the tooth and the surrounding tissues.
When the dentist feels it is appropriate to extract a tooth they will discuss the potential outcomes from the procedure and how the area may be replaced in the future. Often times it is best to place a bone graft in the site where the tooth was removed so that it will heal with bone so the future replacement will be more manageable.
The doctor will review instructions with you about what will be best to help the site heal well and with less post-operative pain.