Ergonomics

Question 1

Group of disorders that involve nerves, tendons, muscles, and supporting structures such as intervertebral discs

Answer 1

Musculoskeletal disorders

Question 2

What is the main cause of musculoskeletal disorders?

Answer 2

Cumulative Trauma Disorders

Question 3

What are the three p’s to fitness in the operatory??

Answer 3

Posture
Positioning
Periodic stretching

Question 4

Head 0-15 tilt ears over shoulder

Shoulders over hips

Elbows relaxed at sides

Forearms parallel to the floor

slight curve in lover back
hip angle > 90 degrees (ideally 105-125 degrees)

Feet flat in tripod position

Answer 4

Correct posture

Question 5

trunk flexion of 0 to 20 degrees

Answer 5

Neutral Back Position

Question 6

When working on the mandibular arch, position the mandible _______ to the floor

Answer 6

parallel

Question 7

When working on the maxillary, position the maxilla _______ to the floor

Answer 7

perpendicular

Question 8

T/F 8-12 is the position for a right handed dentist

Answer 8

true

Question 9

T/F 12-4 is the position for the left handed dentist

Answer 9

true

Question 10

60–9 decibel rating for ______ is comparable to that of motorcycles which is 80-110 decibels

Answer 10

dental work

Question 11

types of noise induced hearing loss

Answer 11

acoustic trauma

temporary threshold shift

permanent threshold shift

Question 12

Few exposures, intense sound level; explosion.

Answer 12

acoustic trauma

Question 13

Temporary hearing change following exposure to noise (ex. concert)

Answer 13

Temporary threshold shift

Question 14

result of accumulation of exposure to noise repeated over years; irreversible; this is what we experience in dentistry

Answer 14

permanent threshold shift