Dental Materials Provisional Restorations Review

Provisional coverage is a restoration that occupies the place for a permanent restoration for about 3 weeks. Provisional restorations can last for a longer period of time in complex prosthodontic and endodontic cases.

• Both statements are true.

• Both statements are false.

• The first statement is true, and the second statement is false

Preformed crowns that are made from polycarbonate celluloid forms are used on posterior teeth.

• True

• False

• Partially false

For posterior teeth, using preformed ______ crowns is a good temporary alternative for a temporary provisional.

• gold

• metal

• soft

• abstract

The advantages of stainless steel crowns is that is has:

• shiny, hard and expensive

• brittle, complex and inexpensive

• malleability, margin integrity, and occlusion

Characterisitcs of aluminum shell crowns is that it is:

a) used for posterior teeth

b) lined with composite

c) adhesion with temporary cement

d) easy manipulation

e) easy to adapt with crown/bridge scissors

• a,b,c

• a,b,c,e

• b,d

• a,b,c,d,e

____________ crowns are rigid, adapt with acrylic burs and is indicated for anterior teeth as it is aesthetically pleasing

• Polycarbonate

• Gold

• Titanium alloy

• Amalgam alloy

There are two techniques when placing a customized provisional. The techniques are ________ and _________.

• cement, adhesion

• direct, indirect

• chrome, aluminum

• hand mixed, silicone putty

Prosthetic dentistry involves:

• the restoration or replacement of missing tissues or teeth

• a surgical procedure called a root canal

• the dental care of only children

Indications for a crown according to the CDA:

a) tooth with endodontic therapy

b) a heavily restored tooth

c) a severely broken down tooth

d) severely stained/misaligned tooth

• a,b,c,d

• a,b,d

• a,b,c

• b,c,d

Ceramic crowns may be made of porcelain, resins, or dental ceramic materials. They have great aesthetic and are typically used for anterior teeth.

• Both statements are true.

• Both statements are false.

• The first statement is true and the second statement is false

• The first statement is false and the second statement is true