Quiz 7

Question 1

removal by shearing it off

Answer 1

Cutting

Question 2

What instrument attachments are used for cutting?

Answer 2

Burs
Disks
Strips

Question 3

What abrasives are used with burs, disks, and strips?

Answer 3

Coarse-medium grip

Question 4

producing final shape & contour

Answer 4

Finishing

Question 5

What abrasives are used for finishing?

Answer 5

Medium-fine grit

Question 6

abrasion of surface to produce smoothness and reduce size of scratches

Answer 6

Polishing

Question 7

wearing away of surface

Answer 7

Abrasion

Question 8

material that does the wearing away

Answer 8

Abrasive

Question 9

Why do we polish?

Answer 9

o Makes restoration fit
o Maintain occlusion
o Minimize irritation
o Simulate natural tooth surface
o Reduce areas susceptible to trapping debris/food
o Reduce potential for corrosion
o Increase hygiene

Question 10

Resistance of a material to indentation

Answer 10

Hardness

Question 11

What are the shapes of abrasives?

Answer 11

 Angular
 Blocky
 Semi round
 Round/Spherical

Question 12

What is the biggest abrasive size/grit?

Answer 12

Coarse

Question 13

water, glycerin, alcohol mouth rinse, slurry/paste used to cool

Answer 13

Lubrication

Question 14

All materials have potential to cause what?

Answer 14

Pulpal trauma

Question 15

What are the four preventative measures of pulpal trauma?

Answer 15

 Slowest handpiece device
 Use light pressure
 Use adequate lubricant
 Use least abrasive agent possible

Question 16

What are the attachments for abrasive devices?

Answer 16

 Diamond burs
 Rubber wheel/points
 Stones
 Disks or strips
 Powders on brushes or in cups

Question 17

What are the types of abrasives?

Answer 17

Diamond
Aluminum oxide
Sand
Pumice
Tin oxide
Rouge
Calcium carbonate
Sodium bicarbonate
Glycine

Question 18

 Most expensive
 Hardest substance – Mohs scale = 10
 Sterilizable
 Varying degrees of coarseness, cutting shanks, disks

Answer 18

Diamond

Question 19

 Mohs scale = 9
 White or tan powder
 Impregnated wheels/points
 Replaced emery
 Smooths enamel

Answer 19

Aluminum oxide

Question 20

 Mohs scale = 7
 Quartz or silica
 Coated disks and handheld strips
 Used in finishing process

Answer 20

Sand

Question 21

 Mohs scale = 6
 Volcanic silica
 Loose abrasive
 Major component in prophy paste
 Polishes enamel, amalgam, & denture bases

Answer 21

Pumice

Question 22

 Mohs scale = 6
 Fine powder
 Finish polish for enamel and restorations

Answer 22

Tin oxide

Question 23

 Mohs scale = 5-6
 Iron oxide
 Block form - Extraorally

Answer 23

Rouge

Question 24

 Mohs scale = 3
 Found in prophy paste and dentifrice
 Polish teeth, metal restorations, and plastic material

Answer 24

Calcium carbonate
(chalk, whiting)

Question 25

 Mohs scale = 2.5-3
 Cleaning agent in toothpaste
 Supragingival air polishing

Answer 25

Sodium bicarbonate

Question 26

 Mohs scale = 2
 Cleaning agent in supra & subgingival air polishing

Answer 26

Glycine

Question 27

Uses aluminum oxide or diamond

Answer 27

Composites

Question 28

 Uses slurry of pumice or tin oxide
 Brownies (most coarse), greenies (fine coarse), or super greenies (ultrafine coarse)
 Maintain wet field + use light pressure

Answer 28

Amalgam

Question 29

Uses aluminum oxide or diamond paste

Answer 29

Porcelain/Ceramics

Question 30

Uses rouge extraoral or tin oxide intraoral

Answer 30

Gold

Question 31

Uses air polishing with glycine

Answer 31

Titanium implants

Question 32

 Additive to prophy paste
 Increase grit

Answer 32

Prophy prep

Question 33

 Finer than prophy paste
 Useful with pediatric patients or those with sensory concerns

Answer 33

Toothpaste

Question 34

To avoid removing fluoride-rich enamel layer

Answer 34

Selective polishing

Question 35

What are the common oral appliances?

Answer 35

o Night guards
o Obstructive sleep apnea
o Orthodontic appliances
o Custom fluoride trays
o Bleaching trays
o Athletic mouth guards

Question 36

What are the signs of chronic bruxing?

Answer 36

o Wear facets
o Chipping and wearing of incisal edges
o Stress cracks in teeth
o Fractured cusps
o Cracked teeth
o Mobility of teeth
o Enlarged masseters
o Sore muscle of mastication

Question 37

 Life soft palate
 Hold tongue in more forward position
 Reposition mandible forward to bring tongue away from airway

Answer 37

Obstructive sleep apnea device

Question 38

What are custom fluoride trays beneficial for?

Answer 38

 High cavity risk
 Tooth sensitivity
 Orthodontic treatment
 Restorative dental work
 Children
 Head and neck radiation patients

Question 39

o Will burn gingiva
o Scallop gingival third of tray

Answer 39

Bleaching tray

Question 40

Type of mouth guard?
 Various sizes
 Cheapest option

Answer 40

Stock

Question 41

Type of mouth guard?
 Mouth-formed
 Interfere with speech and breathing during sports

Answer 41

Boil-and-Bite

Question 42

Type of mouth guard?
 Impression, model, vacu-formed
 Ethylene vinyl acetate acrylic
 Most compliant
 Most expensive

Answer 42

Custom