If you need a crown, your tooth has sustained damage that can’t be repaired with a filling. You might have a deep cavity, crack, or chip. Your tooth could be worn down, which will, over time, negatively alter your bite. Or, you may need a crown following a root canal. Depending upon the amount of tooth structure that needs restoration, Dr. Villani may recommend a full crown or a ¾ crown, which we call inlays or onlays.