The main objective of tooth preparation is to create sufficient space for the restorative material to exhibit excellent esthetics and fracture resistance when in function.
Tooth preparation for laminate veneers.
For ce ramic veneers the minimum required thick ness is approximately 0 3 to 0 5 mm on the buccal surface and 1 5 mm on the incisal edge.
Provide sufficient thickness for the porcelain for adequate fracture resistance and not to over contour the final restoration.
Preparation to prepare a tooth for a veneer your dentist will reshape the tooth surface which is an amount nearly equal to the thickness of the veneer to be added to the tooth surface.
In porcelain laminate veneer preparation we tend to finish the gingival champher supragingivally unless we are dealing with severe discoloration or spaced dentition.
The first fit system uses 3d printed guides and a specially designed handpiece for guided veneer preparation using either a one step or a two step approach.
In the one step approach final restorations are produced prior to preparation of the teeth using reduction guides and veneers are cemented on the same day as preparation.