PRECEMENTATION FINISHING AND POLISHING PROCEDURES

Five steps for Cementation

Intaglio
Proximal Contacts
Margin
Occlusion
Anatomy

What is used to mark proximal contact/feel intensity by resistance it revcieves

Articulating paper

If the crown fails to seat completely, what should you adjust

Contact on side of open margin

What should you use to prevent aspiration

Throat pack

Contacts must be visually ___, have appropriate _____, ______ and _____

Closed
Size, location and intensity

What is internal surface of crown called

Intaglio

What two materials can you use to check intaglio
Which one is cost effective?
Which one is not?

Occlude - Cost effective
Fit Checker - Expensive but easier to clean

What should you do to the area on intaglio where material rubs off on seating

Adjust with appropriate finishing burs

Post adjustment of _______ and _____ the restoration should seat completely

Proximal contacts
Intaglio

You should evaluate the complete seating of the crown in what three ways

Visually
With explorer
Precementation radiograph

Post adjustment of proximal contacts and intaglio, if restoration fails to seat completely, what needs to happen

Restoration needs to be remade

When Checking Occlusion:
Make note of contacts designed on ______
Check for ______ contacts and make adjustments to ______
Assess contacts in ____ and ________

Restoration
Hyperocclusal - eliminate
Centric and eccentric

For glass ceramics, come occlusal adjustments may be done _______ due to ________ of the material

Post cementation
Brittle nature

What anatomical contours should you assess (3)

Emergence profile
Embrasure contours
Pontic surface (FPDs_

All adjusted areas require what?
Why? (4)

Finishing and polishing
For ease of cement removal, avoid staining, plaque accumulation and wear of opposing dentition

Metal Crown Extra Oral Finishing Steps:
Gross adjustments?
All adjustments?

Green stone grinders
Brown/green rubber wheels/points

Metal Crown Extra Oral Polishing Steps (2)
Speed?
Rinse with what

Robinsons soft bristle brush with tripoli buffing compound
Chamois rag wheel and red rouge
6-10k
Soap and water

Intraoral Finishing and Polishing of Metal Crowns (2)
Speed

Friction grip brownie
Greenie point
(6-10k)

Porcelain and Glass Ceramic Extraoral Finishing Steps:
Gross?
All?
Order of usage?
Speed?

Diamond impregnated green stone grinders
Diamond impregnated rubber wheels/points
Green, Blue, Pink, Grey
6-10k

Porcelain and Glass Ceramic Intra Oral Finishing:
All adjustments?
Order of usage

Diamond impregnated rubber wheels/cups and points
Blue, pink and grey

Zirconia Crown Extra Oral Finishing Steps:
Gross?
All Adjustment?
Order of usage
Speed

Diamond impregnated green stone grinders and fine grit diamond burs
Diamond impregnated rubber wheels and discs
Blue, grey
6-10k

Intraoral Zirconia Polishing:
Fine adjustment finishing/polishing?
Gross adjustment?
Order?
Speed?

Diamond impregnated points, cups and wheels
Fine grit diamond
Blue, grey
6-10k