Chapter 46 Quizs

Where should alginate and elastomer impressions be disinfected?

• In the laboratory

• Before leaving the treatment area

• When the assistant has the time

• Disinfection is not necessary

Although technique may vary, when assisting a dentist in taking an elastomeric impression, mix the light-bodied material first.

• True

• False

Which portion of the maxillary impression tray should be seated in the mouth first?

• Anterior

• Posterior

• Right side

• Left side

How does an Automix mixing unit system aid in infection control?

• An antimicrobial can be added to the base and catalyst.

• The impression material can be heated to reduce the growth of microbes.

• Less time is spent cleaning and disinfecting guns and cartridges.

• A conditioning bath is used to prepare the material.

How is a stock smooth surface impression tray prepared for an elastomeric impression?

• Stops placed

• Spacers placed

• Coated with adhesive

• Treated with lubricant

Which type of reversible hydrocolloid material is the most viscous?

• Syringe

• Plate

• Tempered

• Tray

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

• Syneresis

• Imbibition

• Tempering

• Viscosity

Which of the following is utilized to extend the length or depth of the borders of an alginate impression tray?

• Utility wax

• Acrylic

• Boxing wax

• Border molding compound

An impression is a positive reproduction of teeth and surrounding oral tissues. The model created from the impression is a negative reproduction of the structures.

• Both statements are correct.

• Neither statement is correct.

• The first statement is correct; the second statement is incorrect.

• The first statement is incorrect; the second statement is correct.

Which material is the most durable for occlusal bite registrations?

• Softened baseplate wax

• Polysiloxane

• Zinc oxide–eugenol (ZOE)

• Polyether impression material