If you have an esthetic defect in the front teeth area (big colored fillings, teeth with chipped off parts, etc.), the best course of action is recovery by means of facets.
The advantage of having facet work done is having teeth filed-down to a much lesser degree.
If, however, the destruction of the tooth is to a greater degree, the more appropriate method is all ceramic tooth crown work.
Recovery of the esthetics and function through veneers
Big colored old fillings and new carieses
on the tooth necks
A great new smile after repairing
the defects by means of facets
Front teeth with degraded esthetics due
to carieses and fluorosis