A crown is a tooth-shaped cap that is placed over a tooth. Most crowns are made of a hard, white porcelain substance to help them look natural. It is used to strengthen and protect your tooth structure
A crown lengthening is done when the patient lacks the tooth structure required to provide support for the crown. Crown lengthening is recommended for both functional and cosmetic purposes. This treatment will also help, if patient has shorter front teeth and would like to achieve an ideal smile.