proximal surface of frontal teeth (incisors and canines ...class iii. cavity preparation proximal...
TRANSCRIPT
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Class III. cavity preparation
Proximal surface of frontal teeth (incisors and
canines) without loss of incisal edge
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Access to the cavity
• Through the enamel from the oral surface
• Removal of old filling• Separation of teeth - wedges• Removal od hyperplastic gingiva
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Cavity borders• The size of the cavity depends on
dental caries, do not extend!!!• Excavation of carious dentin
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Retention
• Retentive border for composites
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Dry field!!!!
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Etching of enamel and dentin
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Bonding
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Surface Morphology for Adhesion
Enamel- regular surface with
opened inter/intraprismaticspaces
Dentin- no smear layer- opened dentinal tubules- collagen network
available
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Outlines• Depend on size of dental caries or old
filling
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Retentive border
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Preparation of of borders
• Retentive border in enamel
• No retentive border in cementum
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Control of cavities
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Etching, rinsing, drying
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Bonding
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Cleaning of teeth
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Cavity preparation
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Etching
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Matrix and wedge, bonding
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Layering of composite
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Layering of composite
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Almost finished
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Matrix has been removed
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Finishing
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Polishing
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Finished filling
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