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Dental ergonomics- space of reachness, types of delivery system, handling…
- Dental ergonomics- space of reachness, types of delivery system, handling dental instruments
space of reachness
1- large anatomical space, radius 50cm, movement of arm from shoulder joint
2- small physiological space, radius of 25cm, movement of forearm from elbow joint
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types of delivery system
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4- split delivery system
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handle for water, air, suction are in assistant zone
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handling instruments
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3 fingers like pen
hand piece, probe, mirror
full palm
tech hand piece, surgical tool
modified
full palm and thumb support eg suction, right lever