Must know for Phase 1

Question 1

What is a noble metal?

Answer 1

Metal that resists tarnish and oxidation (Gold, Platinum, palladium) NOT SILVER

Question 2

What is a precious metal?

Answer 2

Metal that is worth money (Gold, Platinum, and Silver)

Question 3

What is an alloy metal?

Answer 3

A mix of different metals to improve strength or resist tarnish

Question 4

What are A-Delta nerve fibers?

Answer 4

Larger diameter, myelinated, and conduct nerve impulses more rapidly. Rapid sharp pain (reversible pulpitis)

Question 5

What are C-Delta nerve fibers?

Answer 5

Smaller diameter, UNmyelinated, conduct impulses more slowly. Dull aches (late pulpitis)

Question 6

What are the 5 successful dentinal defense mechanisms?

Answer 6

1. Pain (sensible dentin)
2. Pulpitis (reversible)
3. Blockage of tubule with material from dentinal fluid or odontoblast
4. Mineralization of material at exposed dentinal tubule surface and apertures
5. Formation of sclerotic or tertiary (reparative) dentin at the site

Question 7

What are the 2 types of tertiary dentin?

Answer 7

1. Reactionary-formed from pre-existing odontoblast
2. Reparative- formed from newly differentiated odontoblast due to death of original

Question 8

What plane is this CT image?

Answer 8

Transverse (coronal)

Question 9

What plane is this CT image?

Answer 9

Sagittal

Question 10

What plane is this CT image?

Answer 10

Dorsal (Axial)

Question 11

Classify this carious lesion according to GV black

Answer 11

Class 1 - most common in dogs - on occlusal surfaces. “Pits and tissues”

Question 12

Classify this carious lesion according to GV black

Answer 12

Class 3 - lesions of the proximal surface of the incisor or canine tooth

Question 13

Classify this carious lesion according to GV black

Answer 13

Class 2 - lesions of the proximal surfaces of premolars and molars

Question 14

Classify this carious lesion according to GV black

Answer 14

Class 4- lesions a the proximal surface of an incisors or canine tooth ash involves an incisal edge

Question 15

Classify this carious lesion according to GV black

Answer 15

Class 5 - lesions on labial, buccal, or lingual surface of any tooth

Question 16

Classify this carious lesion according to GV black

Answer 16

lesions of the incisor edge of cusp tip

Question 17

How many walls does each defect have?

Answer 17

A. 3
B. 2
C. 1

Question 18

Amount of deformation that is recovered instantaneously when an externally applied force or pressure is reduced or eliminated.

Answer 18

Elastic Strain

Question 19

Irreversible deformation that remains when the externally applied force is reduced or eliminated.

Answer 19

Plastic strain

Question 20

_______ is when a force acts on a constrained body, the body resists the force. This internal reaction is equal in magnitude and opposite in direction to the applied external force.

Answer 20

Stress

Question 21

the ability of a liquid to maintain contact with a solid surface, resulting from intermolecular interactions when the two are brought together.

Answer 21

Wetability

Question 22

With __________ retention, bonding agents microscopically interlock in enamel porosities, dentinal tubules, or other microscopic anatomy.

Answer 22

Micromechanical

Example: Light cured composites and bonded amalgam restorations

Question 23

With _________ retention, crystal is formed between the ionomer and the minerals within the enamel and dentin

Answer 23

Chemical

Example: Glass ionomer

Question 24

What are the 4 Major Composite Resin (CR) Components

Answer 24

1. Inorganic fillers (quartz/glass)
2. Organic resins (glue)
3. Coupling agents (link between glass/glue)
4. Initiator-accelerator systems

Question 25

What is the chemical responsible for photo initiation in visible light cure materials?

Answer 25

Camphorquinone

Question 26

What is the chemical responsible for photo initiation in UV light cure materials?

Answer 26

Benzoin methyl ether