Ivoclar Vivadent Zenostar - Manual (Page 10)

10
Working steps before the milling process
Shade determination – tooth shade, shade of the prepared tooth
Harmonious integration into the oral cavity of the patient is the prerequisite for a natural all-ceramic restoration. To achieve this,
the following guidelines and notes must be observed by both the dentist and the laboratory.
The overall esthetic result of an all-ceramic restoration is influenced by the following factors:
shade of the prepared tooth
(e.g. natural preparation, non-vital preparation, core build-up or abutment)
shade of the restoration material
(e.g. framework shade, translucency/opacity, brightness value, veneering and/or characterization)
shade of the cementation material
The optical effect of the preparation shade must not be underestimated in the fabrication of highly esthetic restorations. This is
especially important if severely discoloured preparations or non-tooth-shaded build-ups are present.
The desired esthetic properties can be more easily achieved if the clinician determines the shade of the prepared tooth structure.
Shade selection and shade matching
Preparation Shade
Prepared natural tooth
Core build-up
Implant, abutment
Restoration Shade
Framework
Veneer
Characterization
Cementation Material
Desired Tooth Shade
Responsibility of the Dental Office Responsibility of the Laboratory