Best dental crown in kovilambakkam. What is a dental crown? Dental crowns are hollow, artificial tooth covers bonded to teeth to serve as a protective cover. You may go to a dentist that does crowns for many reasons, including: – Restoration of a broken tooth – Support of a weak tooth due to a large cavity or several smaller cavities – Rebuilding a tooth after a root canal – Bite correction – Improvement of the appearance of a discolored tooth – Support for bridgework