DANB Assisting with Restorative and Prosthodontic Procedures

Question 1

What is the primary purpose of a dental matrix band during an amalgam restoration?

Accepted Answer

To provide a temporary wall replacing missing tooth structure

Answer

A matrix band creates a temporary wall that replaces missing tooth structure so filling material can be condensed and shaped properly.

Question 2

Which instrument is used to pack and condense amalgam into a prepared cavity?

Accepted Answer

Amalgam condenser (plugger)

Answer

An amalgam condenser (plugger) is specifically designed to pack amalgam firmly into the cavity preparation to eliminate voids.

Question 3

What is the purpose of acid etching a tooth surface before placing a composite resin restoration?

Accepted Answer

To create micro-irregularities for improved bonding

Answer

Acid etching creates microscopic irregularities on the enamel surface that increase surface area and improve adhesive bonding of composite resin.

Question 4

A dental carver is used during amalgam restorations to:

Accepted Answer

Remove excess amalgam and sculpt natural tooth anatomy

Answer

Carvers remove excess amalgam and reproduce natural tooth anatomy (cusps, fossae, marginal ridges) while the material is still in its working phase.

Question 5

Which prosthodontic restoration covers one or more cusps and the occlusal surface of a posterior tooth?

Accepted Answer

Onlay

Answer

An onlay covers one or more cusps and the occlusal surface, whereas an inlay fits entirely within the cusps without covering them.

DANB General Chairside Assisting (GC) Test Practice Test