4 handed dentistry

Question 1

Classification of Movements

Answer 1

Class I - Only Fingers
Class II - Fingers and Wrist
Class III - Fingers, wrist and elbow
Class IV - Entire arm and shoulder
Class V - Entire arm and twisting of the trunk

Question 2

Class IV and V

Answer 2

Are strenuous and fatiguing
Require looking away from the operative field and then looking back, and refocusing
Results in muscle strain, cramping, eyestrain and headaches.

Question 3

Zones of Activity - Right handed

Answer 3

operator zone - 12 - 7
transfer zone - 4 - 7
assistant’s zone - 2 - 4
static zone - 12 - 2

Question 4

Zones of Activity - Left Handed

Answer 4

operator zone - 12 - 5
transfer zone - 5 - 8
assistant’s zone - 8 - 10
static zone - 10 - 12