Chapter 46 Flashcards

Front

What are the three classifications of impressions used in dentistry?

Back

Preliminary, final, and occlusal, or bite registration

Front

What is the most common reason a dentist would request preliminary impressions?

Back

To make provisional restorations

Front

Legally, who can take final impressions?

Back

Dentist or credentialed dental assistant

Front

An impression tray should be sufficiently deep to allow ____ mm of material between the tray and the incisal or occlusal edges of the teeth.

Back

0.5 to 1 mm

Front

What material can custom impression trays be made of?

Back

They can be constructed from resin.

Front

Which irreversible hydrocolloid material is used most widely for preliminary impressions?

Back

Alginate

Front

Alginate impressions must be poured within ____ so that distortion does not occur.

Back

1 hour

Front

What term is used when an alginate impression takes up water either from soaking or wrapping in a wet paper towel?

Back

Imbibition

Front

Which type of impression tray covers the anterior portion of the dental arch?

Back

Section

Front

What is used to extend the length or depth of the borders of an alginate impression tray?

Back

Utility wax