Finishing Flashcards
What is the sequence for finishing a cast restoration?
- Internal margin
- Internal surface
- Sprue
- Proximal contacts
- Occlusal surface
- Axial walls
- External margins
How much spacing is necessary for the luting agent?
- 25-35 micrometers
What is used to identify areas in need of adjustment dealing with proximal contacts?
Mylar articulating film
When should the cavosurface margins be finished directly on the tooth?
If they are accesible, other areas are finished on the die
What is the most efficient method of polishing?
Sequence of progressively finer abrasives, each removing the scratches made by the previous grade
What’s the final material that will create a high polish?
Jeweler’s Rouge
What’s important to prevent aspiration or swallowing your restoration?
Throat pack
What are the clinical evaluation sequence?
- Proximal contacts (first)
- Marginal integrity
- Stability
- Occlusion
- Characterization and glazing
How can you evaluate the proximal contacts?
- Snap of unwaxed floss
- Use of shim stock (12 microns)
- Ask pt how it feels
How thick is shim stock?
12 microns
How do you deal with excessive tightness?
- All metal restoration
- Adjust with rubber wheel
- Leave little for final polish
- Porcelain restoration
- Adjust with cylindrical stone
- Can restore glazed surface with diamond silicone points, pumice or paste
How do you deal with deficiencies?
- All metal restoration
- Soldering
- Repolishing
- Porcelain restoration
- Adding additional porcelain and re-firing
- Repolishing any metal
Why do you perform a pre-cementation x-ray?
- You would not want to adjust the occlusion and then find radiographically that you were not all the way seated
When would a remount procedure be recommended?
If there is a need for significant occlusal adjustment
