ORE Part 2 Prosthodontics

Question 1

When constructing a complete denture, what determines the correct occlusal vertical dimension (OVD)?

Accepted Answer

Assessment of freeway space, facial proportions, phonetics, and patient comfort

Answer

The height of the residual ridge only

Answer

The patient's existing dentures always

Answer

A standard measurement of 65mm for all patients

Question 2

What is the primary purpose of a facebow record in prosthodontic treatment?

Accepted Answer

To transfer the relationship of the maxilla to the hinge axis of the mandible to a semi-adjustable articulator

Answer

To measure the size of the patient's teeth

Answer

To record the shade of the patient's existing teeth

Answer

To take an impression of the soft tissues

Question 3

A patient wearing a complete upper denture complains of gagging. Which denture feature is most commonly responsible?

Accepted Answer

The posterior border of the denture extends too far beyond the vibrating line onto the soft palate

Answer

The denture is too short posteriorly

Answer

The teeth are set too far lingually

Answer

The denture base is too thin

Question 4

Which type of connector is most appropriate for a Kennedy Class I removable partial denture (bilateral free-end saddle)?

Accepted Answer

Anterior-posterior palatal bar design with indirect retention

Answer

Ring connector

Answer

Full palatal plate

Answer

Single midline palatal bar

Question 5

What is the function of a post dam (posterior palatal seal) in a complete upper denture?

Accepted Answer

To create a seal at the posterior border to aid retention by preventing air entry under the denture

Answer

To make the denture more comfortable to wear

Answer

To prevent the patient from gagging

Answer

To support the soft palate during swallowing

Question 6

When selecting teeth for a complete denture, what guide should be used to determine the width of the upper anterior teeth?

Accepted Answer

The inter-alar width (distance between the sides of the nose) as a guide for the combined width of the six upper anterior teeth

Answer

The patient's age only

Answer

The width of the mandibular arch

Answer

A standard size for all patients