Class III.
Proximal surface of frontal teeth (incisors and
canines) without loss of the incisal edge
Access to the cavity
 Through the enamel from the oral side
 - the round diamond, obliquely from the
side of the neiborough tooth
 Removal of old filling
 Separation of teeth using wooden wedges
can be helpful
 Removal of hyperplastic gingiva
Cavosurface margin

 The size of the cavity depends on dental
caries, do not extend!!!
 Excavation of carious dentin
Retention
 Enamel must be beveled (retentive border –
shallow groove).
bevel
Dry operating field
Acid etching
Bonding
Surface morphology
for adhesion
 Enamel
- regular surface with opened
inter/intraprismatic
spaces
 Dentin
- no smear layer
- opened dentinal tubules
- collagen network
available
Control of cavities
Etching, rinsing, drying
Bonding
Cleaning of teeth
Cavity preparation
Etching
 During acid etching and preparation
 the protection of neiborough tooth is necessary
using a metal strip
Matrix and wedge, bonding
Layering of composite
Layering of composite
Before finishing
Matrix has been removed
Finishing
Polishing
Finished filling