ergonomics

Question 1

ergonomics def

Answer 1

study of man in relation to environment; adaptation of machines/conditions to fit individual so he may work at max efficiency

Question 2

greek for ergonomics

Answer 2

ergo = work
normo = natural rule

‘rules/laws of work’

Question 3

when are we concerned about use/misuse of human body

Answer 3

1. when constant accuracy required
2. when judgements on skills, settings adn technology affect the lives of many
3. when we wany to prevent/correct personal health issues caused by misuse of body

Question 4

5 steps to human centered ergonomics

Answer 4

1. establish optimal natural adn comfortable posture ***PROPRIOCEPTIVE SELF DERIVATION
2. position patient
3. place and stabilize instrument modalities
4. place and stabilize light
5. use the 5 step movements to maintain operator balance, optimal perception, adn control of performance

Question 5

core of ergonomics

Answer 5

pd = proprioceptive self derivation; optimum use of human body

Question 6

proper seat, head, arms position

Answer 6

• knees slightly below hip level, thighs 100-110 degrees from trunk
• backrest in center of lower back
• head not more tahn 25 degrees fwd
• eyes look horiz (perpindicular) to working field like reading book
• elbows 80-90 angle, arms/wrist/hands in line

Question 7

patient position

Answer 7

• lowered so treatment site at elbow level of dentist
• max.occ plane perpindicular to floor
• mand.occ plane parallel to facial plane of dentist

Question 8

light

Answer 8

• parallel with your vision
• positioned obliquely next to head of dentist, easy to reach adn not too close to dentist or patient
• generates heat

Question 9

realistic simulation =

Answer 9

realities of patient care

Question 10

5 movements

Answer 10

1. operator position (9-12 R and 12-3 L)
2. patient head position
3. headrest position (ant-post tilt)
4. min/max intermaxillary space
5. chairlift position

Question 11

3 key factors in dental office

Answer 11

seat position
field vision
palcement