If you have a missing tooth, there are three basic ways to have that tooth replaced.
The traditional way to replace it would be with a dental bridge. A budget way to replace it would be with a removable tooth that clips onto other teeth. The newest way would be with a dental implant.
For a dental bridge, each tooth adjacent to the space is prepared for a dental crown. The laboratory then fabricates a single piece that includes crowns on the adjacent teeth and a false tooth suspended between them.
If the teeth on either side of the space need crowns anyway, a dental bridge could be the best option for you. If these teeth are healthy and intact, however, the use of a dental implant will help preserve healthy tooth structure and will probably make more sense for you.
For more information, you may want to see our dental implant vs. bridge page.