Crowns and bridges refer to the restoration of natural teeth that have been damaged, decayed or lost. A crown can be made to restore an individual tooth damaged by decay or fracture back to its original form and function, while a bridge is used to replace one or more missing teeth. These restorations are cemented onto the teeth and are referred to as ‘fixed’ dentistry as opposed to a restoration of missing teeth with a removable appliance or partial denture.