Sometimes, the desired esthetic result can be achieved by just re-contouring the natural tooth structure without the addition of a restoration at all. This is called enamel reshaping. Teeth that are too long or too pointy can be adjusted to the desired levels. Small chips in the teeth can also be reshaped and polished. Reshaping the tooth is done with a dental drill; however, the tooth enamel is not sensitive, so there is no discomfort, . . . even without anesthesia.
Dr. Jack M. Hosner, D.D.S. (2012)