Foundations III Complex Restorations
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20 Terms
Foundation
Initial restoration of a severely involved tooth
Tooth is restored so that the restorative material serves in place of tooth structure to provide the retention and resistance forms during development of the final restoration
Direct Restoration
Simple
Compound
Complex
Indirect Restoration
Inlay
Onlay
Crown
Cavity Preparation
Minimize extension
Defect removal
Decay determines depth
Rounded internal line angles
Clear cavosurface angle without beveling
Rounded Line Angles
Reduce stress concentration and improve adaptation
Complex Composite
Tofflemire matrix is used but with thin metal matrix
Tofflemire matrix needs to be reshaped during incremental placement in order to receive good contact
Tofflemire Matrix
Used but with thin metal matrix
Needs to be reshaped during incremental placement in order to receive good contact
Dental Bondingq
Conditioner
Primer
Adhesive
Conditioner
Acid - 35-42% phosphoric
Remove inorganic material
Micromechanical retention
Primer
Hydrophilic (water attached) monomers
On dentin
Adhesive
Low viscosity filled or unfilled
Micromechanical retention
Light cured
OptiBond FL
Three step etch and rinse bonding system
Designed for direct and indirect bonding applications
Used in clinics
Composite Restorative Steps
Bonding
First increment is placed on gingival floor
All other increments no more than 2mm
First Increment
Placed on gingival floor
Not more than 1mm thick occlusocervically
Use light shade composite
Other Increments
No more than 2mm
When restoring big peps, build the buccal and lingual walls first
No.12 Scalpel
Shave excess composite at the gingival margin
Finishing Composite
Use the football burs carefully
Grit Strip
Apply the appropriate one to the surface of the composite being careful to not flatter the restoration contour
Polish to the finest one
darkest to lightest
rinse between uses
be careful with contact
Blue Polish
Medium
Slow with water
Grey Polish
Fine
Fast and dry