Quiz 2

Question 1

What is the purpose of border molding

Answer 1

Allows you to get a functional impression of the vestibule

Question 2

__ displace the soft tissue in the vestibule making it appear deeper than it is

Answer 2

Primary impressions

Question 3

Border molding captures the __ of the vestibule that occurs during movement

Answer 3

depth and shape

Question 4

Prevents the denture from being overextended no matter how the patient moves during function

Answer 4

border molding

Question 5

Border molding prevents the master impression from being __ of the depth of the vestibule

Answer 5

“short”

Question 6

Melts wax in a very controlled area
Use ethanol as fuel

Answer 6

Hanau Torch

Question 7

Set water bath temp to

Answer 7

130 degrees

Question 8

Prior to border molding, cover the dentoform with a thin layer of

Answer 8

lubricant/ KY Jelly/ Vaseline

Question 9

Hold green stick compound __ the flame to melt it, not __ or it will catch fire or turn black

Answer 9

above
IN the flame

Question 10

Do you border mold everything at once or small sections at a time

Answer 10

Small sections at a time

Question 11

Place molten green stick compound on tray.
Re-melt compound on tray with Hanau Torch.
Quench tray with molten compound in __ then seat completely on dentoform

Answer 11

water bath for 4-5 seconds

Question 12

Difference between border molding in the lab vs in the clinic

Answer 12

With a patient you would immediately do border molding movements to shape functional impression (Instead of putting into a water bath)

Question 13

Seat tray until __

Answer 13

tissue stops are engaged
(This enures the same repeatable position of the custom tray each time it is removed and placed)

Question 14

Any compound on the interior portion of the tray (the __) must be removed leaving only that filling the vestibule beyond the tray

Answer 14

intaglio

Question 15

__ must be applied to the trays prior to making the impression

Answer 15

PVS Tray Adhesive

Question 16

The adhesive should be applied in a very thin layer, and __ prior to making a PVS impression

Answer 16

dried

Question 17

IMPORTANT! = apply a very thin layer of __ to the dentoform prior to making the impression - DO NOT use __ for this step, as it is too thick and will distort the impression

Answer 17

KY jelly
vaseline

Question 18

__ is used at ULSD for complete denture impressions

Answer 18

Aquasil Ultra Monophase Regular Set (polyVinylSiloxane)

Question 19

Setting time for Aquasil Ultra Monophase Regular Set =__ (takes less time intraorally on a patient)

Answer 19

8 minutes from start of mix in lab

Question 20

The aquasil cylinder is placed in the __ (Pentamix3 Impression Mixer/Dispenser)

Answer 20

Pentamix

Question 21

The blue retainer is screwed onto the cylinder to hold the mixing tip in place
A new disposable mixing tip must be placed __

Answer 21

prior to each mix

Question 22

When you are ready to make the impression a __ will dispense the aquasil and fill your tray

Answer 22

faculty member

Question 23

Features of a good impression

Answer 23

Smooth well-defined peripheries
Maximum extension
Even pressure distribution
(The underlying tray or compounds should not show through)
There should be intimate tissue contact

Question 24

If green stick is too stiff it can cause many problems

Answer 24

Vestibule not recorded correctly, could be too short and not capture it or too long and distort it.

May not capture the frenna

Could still look rounded and not be accurate

Question 25

Border molding done correctly will enable us to get a better impression with less chance of

Answer 25

voids

Question 26

Where are the 4 areas/small sections we place the green compound stick to border mold

Answer 26

buccal frenum back on both sides (2)
labial
Posterior palatal seal area

Question 27

After compound stick is applied we __

Answer 27

wet fingers in the bath and build it up to the periphery
Torch to superheat and make soft
Then water bath
Then in Mouth

Question 28

For the section of border molding done on the posterior palatal seal it is important to -

Answer 28

place on the tissue area of the tray not extend the tray further back