FUNDAMENTALS OF PERIODONTAL INSTRUMENTATION. MODULES 10 AND

FUNDAMENTALS OF PERIODONTAL

INSTRUMENTATION. MODULES 10

AND 11(QUESTIONS AND CORRECT

ANSWERS)



Adaptation - ANS -Is the act of placing the first 1-2 mm of the working-end's lateral surface in

contact with the tooth.




Working-end sections - ANS -Leading-third


Middle-third


Heel- third




Neutral Joint Position Enhances Adaptation - ANS -Precise control when rolling the handle

requires the use of the fingertips --- not the finger pads --- to grasp the instrument handle.


Neutral joint position greatly reduces the risk of muscoskeletal injury

, DO NOT HYPEREXTEND THE JOINTS




hyperextended joint hinders adaptation. - ANS -Holding the instrument with joints in a

hyperextended position impairs the ability to roll the instrument handle between the thumb

and index finger in a precise, controlled manner.




Hypermobility - ANS -Excessive range of motion in a joint, making it less stable and more

susceptible to injury.




correct working end for posterior teeth - ANS -The lower shank is parallel to the distal surface

and the functional shame goes "pu and over the tooth"




incorrect working end - ANS --Lower shank not parallel


-Functional shank is down and around the tooth




Instrumentation stroke - ANS -The act of moving the working end of a periodontal instrument

against the tooth surface