FREE NDEB Prosthodontics and Restorative Dentistry Questions and Answers

Question 1

A patient presents with a completely edentulous maxilla opposing natural mandibular anterior teeth and a bilateral distal-extension removable partial denture.
The patient exhibits significant resorption of the premaxilla, papillary hyperplasia of the palate, and supra-eruption of the mandibular incisors.
Which of the following is the most accurate diagnosis for this clinical presentation?

Accepted Answer

Combination Syndrome

Answer

Paget's Disease of Bone

Answer

Fibrous Dysplasia

Answer

Tori Mandibularis Exacerbation

Question 2

When preparing an endodontically treated molar for a full coverage crown, what is the most critical factor for ensuring long-term resistance to fracture and dislodgement of the restoration?

Accepted Answer

Achieving a 2.0 mm ferrule effect

Answer

Using a fiber post

Answer

Selecting a high-strength ceramic material

Answer

Creating a deep chamfer margin

Question 3

A clinician is preparing a maxillary first molar for a full gold crown. To ensure adequate retention and resistance form, what is the ideal total occlusal convergence (taper) of the axial walls?

Accepted Answer

6-10 degrees

Answer

0-2 degrees

Answer

20-25 degrees

Answer

15-20 degrees

Question 4

A patient requires a removable partial denture for a mandibular arch that is missing all teeth posterior to the second premolars on both sides. According to Kennedy's classification, how would this edentulous situation be classified?

Accepted Answer

Class I

Answer

Class II

Answer

Class IV

Answer

Class III

Question 5

Which of the following occlusal schemes is most frequently recommended for complete dentures to enhance stability during parafunctional movements and accommodate patients with resorbed ridges?

Accepted Answer

Lingualized occlusion

Answer

Canine guidance

Answer

Group function

Answer

Anterior guidance

Question 6

When selecting an elastomeric impression material for a multi-unit fixed partial denture, which material offers the best combination of dimensional stability, detail reproduction, and elastic recovery, making it a gold standard for precision?

Accepted Answer

Polyvinyl siloxane (PVS)

Answer

Condensation silicone

Answer

Polysulfide

Answer

Irreversible hydrocolloid