Deck 25: Ergonomics

Question 1

The goal of ergonomics is to:

A)adapt the human body to the work environment.
B)increase their range of twisting and reaching motions.
C)establish sequences of repetitive motions to reduce work strain.
D)stay healthy while performing their work more effectively.

Answer 1

stay healthy while performing their work more effectively.

Question 2

To prevent eyestrain,the dental assistant should:

A)always wear safety glasses.
B)look up frequently and focus on a point in the distance for about 20 seconds.
C)focus on the dentist's hands and patient's mouth.
D)never look at the curing light.

Answer 2

look up frequently and focus on a point in the distance for about 20 seconds.

Question 3

The risk for cumulative trauma disorders (CTDs)can increase with:

A)standing in one position for extended periods of time.
B)overflexion and overextension of the wrist.
C)slouching.
D)none of the above.

Answer 3

overflexion and overextension of the wrist.

Question 4

The full back release involves:

A)drawing the left arm across the chest and moving the head slowly to the right.
B)dropping the head down slowly while allowing the arms and head to fall between the knees.
C)placing the hands and knees on a flat surface an arching the back like a cat.
D)touching your toes and then hyperextending your back and neck.

Question 5

Repetitive motion,overflexion,and overextension of the wrist can significantly increase the risk for:

A)cumulative trauma disorders.
B)breaking the bone.
C)arthritis.
D)both a and b

Question 6

Deviation from the neutral position includes:

A)twisting and leaning forward.
B)overbending backwards and reaching.
C)none of the above.
D)both a and b

Question 7

Prevention of carpal tunnel syndrome (CTS)can be accomplished by:

A)warming the muscles and joints of hands by slowly opening and closing hands.
B)frequently resting the hands.
C)holding one arm out in front of body with hand extended, then pulling back gently with fingers of other hand.
D)all of the above.

Question 8

The ideal working position for a dental assistant is:

A)a neutral position sitting upright with body weight evenly distributed.
B)standing chairside.
C)seated, leaning forward supported by the stool arm.
D)either a or c

Question 9

Frequent reaching,twisting,and working with the arms in awkward positions can cause all of the following except:

A)sprains.
B)strains.
C)stress.
D)both a and b

Question 10

All the following factors contribute to musculoskeletal disorders (MSDs)except:

A)posture.
B)repetition and force.
C)twisting.
D)both a and b

Question 11

During procedures,frequently used items should be:

A)positioned behind the dental assistant on the counter in order of use.
B)on a separate tray to the side of the assistant.
C)within a comfortable distance, not above the shoulders.
D)within a comfortable distance away from the work area, slightly above the shoulder level.

Question 12

In carpal tunnel syndrome (CTS),tendons swell and exert pressure on the:

A)carpal bones.
B)volar carpal ligament.
C)median nerve.
D)synovial sheath.

Question 13

Periodic stretching of the muscles that support the back,neck,forearms,wrists,and hands will help keep them strong and healthy.

Question 14

The first symptom of carpal tunnel syndrome (CTS)is often a(n):

A)decreased ability to squeeze an object.
B)painful tingling in one or both hands that occurs at night.
C)painful swelling of joints in the fingers.
D)inability to button clothing.

Question 15

The use of ambidextrous gloves can place excessive tension on the:

A)median nerve.
B)carpal bones.
C)synovial sheath.
D)thenar eminence.

Question 16

Shoulder shrugging helps to stretch shoulder muscles that may be strained from:

A)telephone handsets, oral evacuators, and instruments.
B)bending and twisting.
C)leaning forward.
D)sitting for long periods.

Question 17

To relieve stress on the back,neck,and shoulders a dental assistant can:

A)periodically get up and walk around.
B)perform a full back release and head rotations.
C)perform a shoulder shrug.
D)do both b and c

Question 18

The number of bones contained in the carpal tunnel is:

A)three.
B)six.
C)eight.
D)twelve.

Question 19

Eyestrain is caused by not focusing for long enough periods during dental procedures.

Question 20

Physical challenges faced by dental professionals are the development of:

A)back and joint pain.
B)neck and shoulder pain and headache.
C)hand and wrist pain.
D)all of the above.

Question 21

Body mechanics for the chairside dental assistant include:

A)tilting the head and leaning forward.
B)sitting with a straight back, supported by a backrest and placing thighs parallel to the floor.
C)placing elbows close to body.
D)both b and c

Question 22

Before beginning any physical exercise to prevent injury and strain,it is a good idea to:

A)make sure that you can endure the daily regimen.
B)check with your physician that it is safe to perform the exercises.
C)check with your physician if you experience pain while attempting any movements.
D)do both b and c

Question 23

Ergonomic chairside suggestions include:

A)avoiding prolonged, awkward positions and remaining in one position for extended periods of time.
B)increasing repetitions and forceful movements.
C)rearranging items in the operatory for easy use and using muscles to remain balanced for ease of movement.
D)both a and c

Question 24

Optimal operator positioning includes:

A)working from a neutral position.
B)repositioning the patient as necessary.
C)both a and b
D)none of the above.