ch.25 Ergonomics – Flashcards
Unlock all answers in this set
Unlock answersquestion
ergonomics
answer
adaptation of the human body to the work environment. safest, most efficient, and easiest way to work
question
how does ergonomics work?
answer
design of the workplace, instruments, systems and machines being used -training -breaks and strengthening muscles - efficiency in performing tasks
question
factors of ergonomics 6
answer
1.good practice 2.staff training 3.equipment design 4.instrument design 5.workplaces changes 6. balance and exercise
question
MSD disorders?
answer
back pain, carpal tunnel, headache, neck pain, shoulder pain
question
3 categories of risk factors to MSD?
answer
posture, force, repetition
question
posture
answer
ability of dental assistant to reach and hold equipment. also how long posture can be hold for task. lead to - low back pain and fatigue
question
neutral position
answer
sit up right while weight is evenly distribute. legs separated and feet flat. back shoulder press against back tilt hip forward to rotate
question
strains
answer
extreme stretching of muscles and ligaments
question
sprains
answer
usually involve a sudden twist or wrenching of a joint with stretching or tearing of ligaments.
question
optimal dental assistant position
answer
1. position head up right 2.back straight and support with back rest 3.keep thigh parallel to floor 4. sit at patient shoulder with knees even with patients headrest 5.rest feet on chair or foot rest. 6. eye level 6 inch from dentist level
question
normal horizontal reach
answer
frequently use of items
question
maximum vertical reach
answer
operatory light
question
maximum horizontal reach
answer
other supplies less frequently
question
cumulative trauma disorders CTDs
answer
repetitive motion, overflexion, and extension of wrist breaks and alternating difficult procedures can reduce risk injury
question
carpal tunnel syndrome
answer
8 bones in wrist that become a tunnel where tendons and median nerve passes -cause swelling and inflammation -symptoms- pain and tingling in hand often at night, maybe loss of strength
question
ambidextrous gloves
answer
cause excessive tension called thenar eminence (flesly elevation on the palm ) forcing hand to work against the vertical alignment of the glove form.
question
muscle-strenghthening exercises
answer
5 hands, eyestrain,back,head,shoulder
question
hand exercise
answer
resting the hand frequently
question
eye exercise
answer
look up from the task and focus your eye at a distance for 20 seconds practice throughout the day
question
back exercise
answer
relieve stresses back, neck shoulder TRY FULL BACK RELEASE head rotations
question
neck exercise
answer
rotate tilt head right to left
question
shoulder shugging
answer
by holding oral evacuators, instruments and telephone handsets
