Crowns and Bridges: Our office provides bridges and crowns for the whole family. Bridges and crowns are fixed prosthetic devices that are cemented onto existing teeth or implants by a dentist. Crowns are used most commonly to entirely cover or "cap" a damaged tooth or cover an implant. Bridges are commonly used to cover a space if you’re missing one or more teeth. They are cemented to natural teeth or implants surrounding the space where the tooth once stood.