DenMat Prelims Exam Lab

Question 1

this handpiece uses electric-powered and no water

Answer 1

low speed handpiece

Question 2

provides a smooth clear surface for mixing dental materials

Answer 2

paper mixing / glass slab

Question 3

what abrasive:
polishing noble metals
(iron oxide)

Answer 3

rouge

Question 4

what abrasive:
finishing and polishing of ceramics

Answer 4

natural diamond

Question 5

what abrasive:
fine grinding of enamel and metals

Answer 5

Arkansas stone
(microcrystalline quartz)

Question 6

different types of material strain

Answer 6

1. tensile
2. compressive
3. torsion
4. shear
5. complex

Question 7

polishes and smooths the surface of the amalgam after carving

Answer 7

amalgam burnisher

Question 8

used to mix alginate or other impression materials within rubber bowls

Answer 8

dental spatula

Question 9

what abrasive:
polishing of metals and resins
(sedimentary rock)

Answer 9

tripoli

Question 10

used to compress and pack amalgam

Answer 10

amalgam condenser

Question 11

this handpiece illuminates light

Answer 11

fiberoptic high speed handpiece

Question 12

what abrasive:
grinding of metals

Answer 12

corundum
(alumina)

Question 13

shank styles

Answer 13

friction
latch
quick release

Question 14

what abrasive:
polishing teeth and metals
(metal oxide)

Answer 14

tix oxide

Question 15

the 4 basic dental instruments

Answer 15

1. mouth mirror
2. explorer
3. cotton pliers
4. spoon shaped excavator

Question 16

what abrasive:
cutting of metals, ceramics, and resins
(synthetic material)

Answer 16

silicon carbide

Question 17

4 groups of materials that are being used

Answer 17

metals
ceramics
polymers
composites

Question 18

caries affecting proximal including incisal angles of anterior teeth

Answer 18

class 4

Question 19

used almost exclusively for oral prophylaxis

Answer 19

contra angle handpiece

Question 20

what abrasive:
grinding of metals and resins

Answer 20

garnet
(silicate-based mineral)

Question 21

what abrasive:
polishing of enamel, amalgam, and resin

Answer 21

chalk
(mineral form of calcite)

Question 22

what abrasive:
finishing of metals and resins

Answer 22

emery
(fine grain alumina)

Question 23

this dental instrument is used to examine the teeth for decays(caries), calculus, furcations, or other abnormalities

Answer 23

explorers

Question 24

mouth mirrors functions

Answer 24

to provide indirect vision
to retract lips, cheeks, tongue
to reflect light into the mouth

Question 25

what abrasive: air blasting to clean castings (silica minerals)

Answer 25

sand

Question 26

caries affecting proximal surfaces of central incisors, lateral incisors, and cuspids without involving the incisal angles

Answer 26

class 3

Question 27

holds impression materials and captures the full arch of the teeth (no holes)

Answer 27

Non-perforated impression tray

Question 28

caries affecting cusp tips of molars, premolars, and cuspids

Answer 28

class 6

Question 29

what abrasive: finishing of metals, resins, and ceramics

Answer 29

alumina (aluminum oxide)

Question 30

caries affecting pits and fissures on occlusal third of molars and premolars, occlusal two-thirds of molars and premolars, and lingual part of anterior teeth

Answer 30

class 1

Question 31

the part that fits into the handpiece

Answer 31

shank

Question 32

caries affecting gingival one-third of facial or lingual surfaces of anterior or posterior teeth

Answer 32

class 5

Question 33

what abrasive: finishing metals (silica)

Answer 33

quartz

Question 34

this handpiece uses air-powered and water

Answer 34

high speed handpiece

Question 35

caries affecting proximal surfaces of molars and premolars

Answer 35

class 2

Question 36

medium or intermediate speed rpm

Answer 36

12,000 - 200,000 rpm

Question 37

the narrow portion connecting the shank and the head; transmits the rotational force

Answer 37

neck

Question 38

a versatile double-ended instrument with one end used for carrying materials and the other for packing

Answer 38

Woodson instrument

Question 39

used to crush, grind, and mix materials, such as dental cements into fine powder or paste. used for capsule amalgam

Answer 39

mortar and pestle

Question 40

mixes dental cements or impression materials and applies them during restorative procedures

Answer 40

cement spatula

Question 41

the working / cutting part

Answer 41

head

Question 42

what abrasive: polishing of enamel, amalgam, and resin (volcanic material)

Answer 42

pumice

Question 43

transfers and places dental amalgam from the amalgam well into the prepared cavity in the tooth

Answer 43

amalgam carrier

Question 44

to grasp or transfer items and/or material into and out of the oral cavity

Answer 44

cotton forceps/pliers

Question 45

what abrasive: prophylaxis paste (zirconium silicate)

Answer 45

zircon

Question 46

low-speed rpm

Answer 46

30 - 100,000 rpm (usually for polishing, no water)

Question 47

ultrahigh-speed rpm

Answer 47

300,000 - 400,000 rpm (water to cool down the area)

Question 48

what abrasive: cutting, finishing, and polishing of tooth structure, ceramic, metals, and resins

Answer 48

synthetic diamond

Question 49

used to mix materials such as alginate or other impression materials

Answer 49

rubber bowl

Question 50

shapes and carves the amalgam filling to reproduce the natural anatomy of the tooth

Answer 50

amalgam carver

Question 51

true or false: rotary instruments are those that are held in handpieces in a rotary motion directly driven by air or motor

Answer 51

true

Question 52

5 requirements of dental materials or products

Answer 52

1. serial number 2. lot number 3. biocompatibility 4. physical property 5. data covering