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STEPS OF FABRICATING STEPS OF FABRICATING CAST METAL ALLOY CAST METAL ALLOY REMOVABLE PARTIAL REMOVABLE PARTIAL DENTURES (RPDs) DENTURES (RPDs)

RPD 009 Steps of Cast RPD Making

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Page 1: RPD 009 Steps of Cast RPD Making

STEPS OF FABRICATING STEPS OF FABRICATING CAST METAL ALLOY CAST METAL ALLOY REMOVABLE PARTIAL REMOVABLE PARTIAL DENTURES (RPDs)DENTURES (RPDs)

Page 2: RPD 009 Steps of Cast RPD Making

Fabricating Cast RPDsFabricating Cast RPDs

Page 3: RPD 009 Steps of Cast RPD Making

FABRICATION STEPS OF CAST RPDs

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STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

First the metal framework for RPD fabricated by:- Lost-wax casting technique.

Following are the stages for Cast RPD:Preliminary Impression / MMR / study cast.Preliminary surveying & occlusal analyses of cast.Selection of RPD design.Tooth-prep work / final impression & master casts.Final surveying & block-out work on master cast.FWK outlining on master cast.Duplication of the prepared master cast.Wax hardening of the refractory cast.Wax / plastic patterns used to lay-down FWK.Wax-pattern on refractory cast sprued.

Page 5: RPD 009 Steps of Cast RPD Making

STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

FWK wax pattern invested in a casting ring.Wax pattern burnt-out to get mould for FWK.Mould heat-soaked to expand (casting shrinkage).Molten-metal alloy forced to fill mould cavity.Cast FWK recovered from casting ring.Sprues cut.Fwk finished / smoothened / polished.FWK tried on cast & in mouth.ACIP if necessary.MMR records if needed.Trial of waxed-up RPD in mouth.Processing / finishing RPD.RPD fitted in mouth.

Page 6: RPD 009 Steps of Cast RPD Making

STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

Page 7: RPD 009 Steps of Cast RPD Making

STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

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STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

Page 9: RPD 009 Steps of Cast RPD Making

STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

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STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

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STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

Page 12: RPD 009 Steps of Cast RPD Making

STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

Page 13: RPD 009 Steps of Cast RPD Making

STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

Page 14: RPD 009 Steps of Cast RPD Making

STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

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STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

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STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

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CAST RPD FWK STAGES

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CAST RPD FWK STAGES

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CAST RPD FWK STAGES

Laser welding unitSteam

cleaning unit

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CAST RPD FWK STAGES

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STEPS OF CAST REMOVABLE PARTIAL DENTURES (RPDs)

On Finishing, Smoothing & Polishing:- Fwk is first tried on master cast &:- then in the mouth.

Recording of ACIP if necessary.

Registering MMR if needed.

Trial of waxed-up RPD in mouth.

Processing / finishing RPD.

Fitting RPD in mouth.

Page 22: RPD 009 Steps of Cast RPD Making

RPDs with CAST-metal alloy FWK