Today, modern dentistry and better nutrition have reduced the incidence of tooth loss. It is now quite possible to preserve and maintain your teeth for a lifetime.
When a tooth is extracted, it leaves a space that can cause other teeth to shift and become crooked, affecting your ability to chew properly. Thus, the loss of a single tooth can have a major impact upon your dental health and appearance.
Although an extraction is initially less expensive than restoration, the missing tooth will need to be replaced with a bridge or implant which can cost more than a root canal or other restorative treatment.
Overall, the benefits of natural teeth outnumber the benefits of prosthetic, or replacement, teeth.