A dental crown is used to improve or protect damaged, cracked or broken teeth. The use of crowns is a restorative dental technique. A crown can cap or cover a tooth. Crowns are often used in combination with abutments and implants for partial or full-mouth restoration. Crowns are prepared by dental technicians following preparation by the dentist. The use of crowns is an indirect dental technique, as the patient does not have to be present for their preparation.