Provisionals: Weiss

Question 1

What are the three methods for fabricating provisional restorations?

Answer 1

Indirect
Direct
Indirect-Direct

Question 2

What is a disadvantage to using the direct procedure for provisional fabrication?

Answer 2

Potential tissue damage due to polymerization reaction of the resin

Question 3

The cast for the “external surface form” should be poured in stone and then _______ must be filled using “block out” material.

Answer 3

Undercuts

Question 4

Using a vacuum, you must create a ________ that will be trimmed _______mm from the gingival margin.

Answer 4

Vacuum Form Matrix

4 - 5 mm from gingival margin or CEJ

Question 5

The ESF should be painted with a thin layer of _____ before filling the mold with resin.

Answer 5

Monomer

Question 6

During the ______ stage, the ESF should be moved 2mm occlusally and then reseated several times until polymerization is complete.

Answer 6

rubbery

Question 7

The ______ and ______ should be marked with a red pencil to prevent over-trimming the provisional.

Answer 7

margins

interproximal contact

Question 8

List the tools used for trimming and finishing the provisional restoration:

Answer 8

Acrylic bur
Sandpaper discs
Rubber wheels
Fine Pumice + water on Lathe Machine
Cres Shine (Dry)

Question 9

What would it look like if your provisional had a margin that was “shy” or “ledged”?

Answer 9

The margin is not adapted when moving the probe from coronal to gingival but the lack of material does NOT extend onto the axial wall of the prepared tooth

Question 10

What does an “open” margin look like?

Answer 10

The provisional material does NOT extend far enough gingivally and the axial wall of the prepared tooth is visible

Question 11

What does an “overcontoured” margin look like?

Answer 11

There is provisional material that extends gingivally past the cavosurface margin