Class III. cavity preparation
Proximal surface of frontal teeth (incisors and
canines) without loss of incisal edge
Access to the cavj
Through the enamel from the oral surface
Removal of old filling
Separation of teeth - wedges
Removal od hyperplastic gingiva
Cavity borders
•   The size of the cavity depends on dental caries, do not extend!!!
•  Excavation of carious dentin
Retention
•   Retentive border for composites
Dry field!!!!
Etching of enamel and dentin
Bonding
Surface Morphology for Adhesion
Enamel
-   regular surface with opened inter/intraprismatic
spaces

Dentin
no smear layer
opened dentinal tubules
collagen network
available
Outlines
•   Depend on size of dental caries or old filling
sešikmení skloviny
Retentive border
Preparation of of borders
•   Retentive border in enamel
•  No retentive border in cementům
Control of cavities
Etching, rinsing, drying
Bonding
Cleaning of teeth
Cavity preparation
Etching
Matrix and wedge, bonding
Layering of composite
Layering of composite
Almost finished
Matrix has been removed
Finishing
Polishing
Finished filling