In most cases, this is the preferred option, for a number of reasons.
Firstly, while saving a tooth may cost more than extracting it in the short term, this can prove to be a false economy in the long term. Options for replacing missing teeth – such as dentures, bridges, and implants – almost always end up being more expensive (and more inconvenient) than saving a tooth.
Secondly, there are functional benefits to saving a tooth. Missing teeth open the door for their remaining neighbours to try to fill the empty space. This may result in complications chewing food, or in extreme cases may even affect speech.
Thirdly, the appearance of a missing tooth can be a real concern for some patients. Where multiple teeth have been removed, it is generally considered that this will have an effect on the structure and appearance of the face in the long term.