Assisting with Restorative and Prosthodontic Procedures Flashcards

Which impression material is most commonly used for final impressions in crown and bridge procedures?

Answer: Polyvinyl siloxane (PVS)

Polyvinyl siloxane (PVS) and other elastomeric materials are preferred for final impressions because they provide high accuracy and excellent dimensional stability.

Why is a temporary (provisional) cement used to seat a temporary crown?

Answer: It allows easy removal when the permanent crown is ready

Provisional cement holds the temporary crown securely during the fabrication period but allows the dentist to remove it easily at the delivery appointment.

What is the purpose of a bite registration in a crown and bridge procedure?

Answer: To record the occlusal relationship between upper and lower teeth

A bite registration records the exact opposing relationship of the arches so the dental laboratory can fabricate the crown with correct occlusal contacts.

Which of the following is a REMOVABLE prosthodontic restoration?

Answer: Complete denture

A complete denture is a removable prosthesis that the patient can take out, distinguishing it from fixed restorations that are permanently cemented.

What is a 'pontic' in a fixed dental bridge?

Answer: The artificial tooth that replaces the missing tooth

The pontic is the artificial tooth component of a bridge that spans the edentulous space, supported by the abutment crowns on either side.

When permanently cementing a crown, which items should the dental assistant have prepared?

Answer: Permanent cement mixed to proper consistency and placement instruments

At the crown delivery appointment, the assistant prepares appropriate permanent cement mixed to the correct consistency along with seating and cleanup instruments.