finishing the cast restoration - mu-sofia
TRANSCRIPT
Finishing the cast restoration
Prof. Bozhidar Yordanov
Contouring, grinding and polishing of metal restorations
Finishing the cast restoration
Contouring, grinding and polishing of metal restorations
Finishing the cast restoration
Adjustment of the restoration to the removable die
Final preparation of the blend-crown (metal-acrylic resin) on
tooth 24 for placing the veneering material
Adjustment of the restoration to the interproximal contacts –
the contacts to the adjacent teeth
Occlusal adjustment of the restoration in relation to the
opposing dental arch
Finishing axial walls and final grinding and polishing of the
cast restoration for achieving a highly shining surface
Adjustment of the cast restoration
Finishing the cast restoration
Adjustment of the restoration to the removable die
Uniform space of 25µ to 35µ between die and internal surface
Finishing the cast restoration
Adjustment of the restoration to the removable die
1-mm-wide band of the internal surface – NO corrections
Finishing the cast restoration
Adjustment of the restoration to the removable die
Nodules can be removed with a small round carbide bur
Nodule
Finishing the cast restoration
Adjustment of the restoration to the removable die
Any significant force will abrade or chip the die
Finishing the cast restoration
Adjustment of the restoration to the removable die
Marking agents:
water-soluble dies
solvent-based dies
elastomeric detection pastes
powdered sprays
Finishing the cast restoration
Adjustment of the restoration to the removable die
Finishing the cast restoration
Adjustment of the restoration to the removable die
Finishing the cast restoration
Adjustment of the restoration to the removable die
small round carbide bur
bur with a rounded tip
fine stone
30 000 r/min
Finishing the cast restoration
Adjustment of the restoration to the removable die
Finishing the cast restoration
Adjustment of the restoration to the removable die
Finishing the cast restoration
Adjustment of the restoration to the removable die
Removal of the sprue
Finishing the cast restoration
Adjustment of the restoration to the removable die
Finishing the cast restoration
Adjustment of the restoration to the removable die
Finishing the cast restoration
Final preparation of the casting on tooth 24 for veneering
35 000 r/min
Finishing the cast restoration
Final preparation of the casting on tooth 24 for veneering
35 000 r/min
Finishing the cast restoration
Final preparation of the casting on tooth 24 for veneering
Finishing the cast restoration
Adjustment of the proximal contact areas
Proximal contact areas should be slightly too tight !
Finishing the cast restoration
Adjustment of the proximal contact areas
Lost contacts cannot be restored easily! Solder?
Finishing the cast restoration
Adjustment of the proximal contact areas
Excessive contacts detected with shim stock
Finishing the cast restoration
Adjustment of the proximal contact areas
Excessive contacts detected with shim stock
Finishing the cast restoration
Adjustment of the proximal contact areas
Excessive contacts detected with shim stock
Finishing the cast restoration
Adjustment of the proximal contact areas
Fine abrasive stones and rubber wheels at a speed of 30 000 r/min
Finishing the cast restoration
Adjustment of the proximal contact areas
Moderate resistance when the foil (shim stock) is pulled out
Finishing the cast restoration
Adjustment of the proximal contact areas
Lost contact – food impaction, inflammation, bone loss
Finishing the cast restoration
Occlusal adjustment of the restoration
Finishing the cast restoration
Occlusal adjustment of the restoration
Flame-shaped finishing burs or diamonds
Finishing the cast restoration
Occlusal adjustment of the restoration
Convex contour of the cusps and ridges should be preserved
Finishing the cast restoration
Occlusal adjustment of the restoration
Define grooves with finishing diamonds, carbides or small round burs
Finishing the cast restoration
Occlusal adjustment of the restoration
Final check up of occlusal contacts
Finishing the cast restoration
Occlusal adjustment of the restoration
Final check up of occlusal contacts
Finishing the cast restoration
Occlusal adjustment of the restoration
Small rubber points for occlusal surfaces
Finishing the cast restoration
Occlusal adjustment of the restoration
Small rubber points need to be sharpened periodically
Finishing the cast restoration
Finishing axial walls
Sequence of progressively finer grades is used to attain
the desired surface
Finishing the cast restoration
Final grinding and polishing of the cast restoration for
achieving shining surface
Most efficient method of polishing is a sequence of
progressively finer abrasives
Finishing the cast restoration
Final grinding and polishing of the cast restoration for
achieving shining surface
Most efficient method of polishing is a sequence of
progressively finer abrasives
Finishing the cast restoration
Final grinding and polishing of the cast restoration for
achieving shining surface
Most efficient method of polishing is a sequence of
progressively finer abrasives
Finishing the cast restoration
Final grinding and polishing of the cast restoration for
achieving shining surface
Direction of rotation should never be against the margins
of the crown
Finishing the cast restoration
Final grinding and polishing of the cast restoration for
achieving shining surface
Abrasive paste on hard brush wheels
Finishing the cast restoration
Final grinding and polishing of the cast restoration for
achieving shining surface
Abrasive paste on hard brush wheels
Finishing the cast restoration
Final grinding and polishing of the cast restoration for
achieving shining surface
Buffing compounds on soft brush wheels
Finishing the cast restoration
Final grinding and polishing of the cast restoration for
achieving shining surface
