11.
Final setting time for artificial stone, depending of the type mixed, is:
a. 10 to 25 minutes.
b. 25 to 45 minutes.
12.
List the methods used to hasten the setting time for gypsum plaster products.
a. Use ______________ water.
b. Mix for a ______________ period of time.
c.
Use a ___________________ accelerator.
d. Use warm water, up to __________ F.
13.
Soaking the cast for several hours in a solution of borax will increase the surface
a. Plaster of Paris.
b. Artificial stone.
14.
Match the common use in Column I to the appropriate dental wax in Column II.
Write your answers in the space provided.
COLUMN I
COLUMN II
(1)
____
a.
Utility wax
Used to prepare patterns for crowns
b.
Boxing wax
(2)
____
Used for making occlusal rims
c.
Low-fusing impression
(3)
____
Holds together broken pieces of a
wax.
denture
d.
Inlay casting wax.
(4)
____
Adapts impression trays for individual
impressions
e.
Baseplate wax
5)
____
Forms a box around impressions
f.
.Sticky wax
(6)
____
Used in relining or rebasing partial
dentures
MD0502
3-14