ch 35

Question 1

torque

Answer 1

twisting or turning force that causes rotation.

Question 2

bur

Answer 2

rotary cutting instrument made from either steel or tungsten carbide

Question 3

laser

Answer 3

light radiation to remove or treat a specific area

Question 4

ultrasonic

Answer 4

water and vibration that causes energy

Question 5

dental handpiece

Answer 5

electrical device that uses air pressure to rotate burs for dental procedures

Question 6

mandrel

Answer 6

attached to slow speed handpieces to hold abrasive material

Question 7

flutes

Answer 7

blades of a finishing bur

Question 8

rotary

Answer 8

something that is rotational

Question 9

shank

Answer 9

part of bur that fits into the handpiece

Question 10

What year was the dental handpiece introduced?

Answer 10

1950s (air driven)

Question 11

What is the most frequently used device in restorative dentistry?

Answer 11

high-speed handpiece

Question 12

How fast does the low-speed motor spin?

Answer 12

10000-30000 rpm

Question 13

Which motor has multiple attachments?

Answer 13

low-speed motor

Question 14

The prophy angle is placed on what motor to polish teeth?

Answer 14

low-speed

Question 15

How fast does the high-speed operate?

Answer 15

400000+ rpm

Question 16

What extra two features do the high-speed handpiece have?

Answer 16

air & water

Question 17

Friction grip burs are used on what handpiece?

Answer 17

high-speed

Question 18

What part of a bur fits into the handpiece?

Answer 18

shank

Question 19

What material was originally used to make burs?

Answer 19

steel

Question 20

What is the benefit of using a laboratory handpiece?

Answer 20

greater torque, handle heavier pressure

Question 21

How do we know when to lubricate a handpiece?

Answer 21

manufacturer’s instructions

Question 22

Is a handpiece critical, semi-critical, or non-critical?

Answer 22

semi-critical

Question 23

How often do we need to sterilize our handpieces?

Answer 23

manufacturer’s instructions

Question 24

Name the parts of a rotary instrument?

Answer 24

shank, neck, head

Question 25

What are burs now commonly made of?

Answer 25

tungsten carbide

Question 26

Why do we clean the external portion of a handpiece?

Answer 26

get rid of debris

Question 27

What are the two most common types of handpieces?

Answer 27

high/low speed

Question 28

What type of procedures can we use a low-speed motor with attachment for?

Answer 28

adjusting dentures and retainers, cleanings, polishing, finishing fillings, gold restorations

Question 29

What type of procedures can we use a high-speed handpiece for?

Answer 29

restorative: remove decay/old restorations, reduce crown on tooth, section tooth during surgery

Question 30

What equipment sterilizes our handpiece for us?

Answer 30

autoclave

Question 31

What type of bur shank is used with the straight attachment?

Answer 31

straight

Question 32

Which handpiece is used for adjusting gold or porcelain crowns?

Answer 32

Low-speed motor with contra-angle

Question 33

What is the purpose of an ultrasonic handpiece?

Answer 33

remove calculus, tartar, stain, and bonding materials

Question 34

List benefits of using a dental laser?

Answer 34

cut through hard and soft tissue; less pain, bleeding, swelling, and trauma; no anesthetic

Question 35

Which bur fits into the contra-angle attachment?

Answer 35

latch-type burs

Question 36

How do we describe the design of the bur head?

Answer 36

shape

Question 37

What is the rheostat?

Answer 37

foot pedal; controls air pressure and how fast

Question 38

What was the first dental handpiece like?

Answer 38

driven by belts and pulleys

Question 39

What are the 7 steps for cleaning the room and sterilizing your handpieces?

Answer 39

1. remove burs, motors, handpieces 2. take to steri 3. dispose burs 4. wipe with Cavicide 5. lubricate 6. dry and bag 7. sterilize