Dental & Clinical Sciences Knowledge Assessment

Question 1

An infectious bacterial disease in which the tooth is attacked by acids in plaque and saliva is called:

  • [ ] Plaque

  • [✓] Dental caries (CORRECT)

  • [ ] Dental sealant

  • [ ] Gingivitis

Question 2

An un-erupted tooth that has gotten stuck and can't come in is called:

  • [ ] Anesthesia

  • [✓] Impacted (CORRECT)

  • [ ] Local anesthesia

  • [ ] Extraction

Question 3

The type of wax that is used to construct wax rims are called:

  • [ ] Inlay wax

  • [ ] Casting wax

  • [✓] Modeling wax (CORRECT)

  • [ ] Ivory wax

Question 4

The type of abrasive that is used with air pressure is:

  • [ ] Stone

  • [✓] Sand (CORRECT)

  • [ ] Pumice

  • [ ] Rouge

Question 5

Ideal height of posterior mandibular occlusion rim should be approximately:

  • [ ] 22 mm

  • [ ] 16 mm

  • [✓] 2/3 the height of the reteromolar pad (CORRECT)

  • [ ] 24 mm

Question 6

Initial concept of osseointegration stemmed from vital microscopic studies of microcirculation in bone repair mechanisms, the chamber which was used in these studies (and discovered the osseointegration) was made from:

  • [ ] Chrome-cobalt

  • [✓] Titanium (CORRECT)

  • [ ] Aluminium

  • [ ] Stainless steel

Question 7

The widest anterior tooth is:

  • [✓] Upper central (CORRECT)

  • [ ] Upper canine

  • [ ] Lower central

  • [ ] Lower canine

Question 8

While blocking out undercuts on a cast for a removable partial denture, which material provides a predictable and stable block-out without interfering with cast metal fit?

  • [✓] Removable wax or resin block-out placed selectively where needed (CORRECT)

  • [ ] Regular low-viscosity silicone impression material

  • [ ] Permanent cyanoacrylate adhesive over all undercuts

  • [ ] Duct tape wrapped around the cast

Question 9

During the fabrication of a maxillofacial prosthesis, the One Element that mostly controls the overall success results of the prosthesis is:

  • [ ] The contours

  • [ ] The margins

  • [✓] Tissue movement (CORRECT)

  • [ ] The scale

Question 10

The design of bridge in which the pontic is supported by metal wings on the lingual surfaces of the adjacent teeth is called:

  • [ ] Cantilever bridge

  • [✓] Resin bonded bridge (CORRECT)

  • [ ] Fixed movable bridge

  • [ ] Fixed fixed bridge

Question 11

Category: Infection Control

Which vaccination is most important for dental laboratory personnel to reduce occupational risk?

  • [✓] Hepatitis B vaccine (CORRECT)

  • [ ] Hepatitis C vaccine

  • [ ] Hepatitis A vaccine

  • [ ] Hepatitis E vaccine

Question 12

Category: Occupational Health and Safety

Which practice reduces aerosol generation during trimming and finishing of prostheses?

  • [✓] Using water coolant and high-volume evacuation and appropriate ventilation (CORRECT)

  • [ ] Increasing handpiece speed to decrease time

  • [ ] Trimming in a small, enclosed area without ventilation

  • [ ] Wearing multiple masks simultaneously

Question 13

Category: Clinical Pharmacology & Analgesics

What is the primary mechanism of action of most Non-Steroidal Anti-Inflammatory Drugs (NSAIDs)?

  • [ ] Inhibition of phospholipase A2

  • [ ] Irreversible inhibition of COX-1 only

  • [✓] Reversible inhibition of COX-1 and COX-2 (CORRECT)

  • [ ] Blocking leukotriene synthesis

Question 14

Category: Pediatric Prosthodontics

Which finish line is most appropriate on a stainless steel crown prepared for a primary molar?

  • [ ] Shoulder with bevel

  • [ ] No preparation 

  • [ ] Chamfer

  • [✓ ] Feather edge margin (CORRECT) 

Question 15

Category: Orthodontic Biomechanics

The primary purpose of a spacer (separator) in orthodontic banding is to:

  • [ ] Create room for bracket bonding

  • [ ] Provide permanent retention for bands

  • [ ] Prevent food impaction permanently

  • [✓] Create space between teeth to allow band placement (CORRECT)

Last modified: Sunday, 18 October 2026, 7:13 AM