A giromatic handpiece for endodontic instrumentation operates by a:
Correct Answer: Oscillating motion
Description: Classification of endodontic instruments according to method of use:
Group I: Hand-operated endodontic instruments
Example: Broaches, files, reamers.
Group II: Nonrotary endodontic instruments
Engine driven instruments:
– Reciprocating or quarter-turn motion.
– Vertical stroke along with quarter-turn motion.
Ultrasonic and sonic instruments
Group III: Rotary endodontic instruments used with a handpiece
Slow speed rotary stainless steel instruments.
NiTi rotary instruments.
Key concepts
Commonly used reciprocating handpiece is Giromatic handpiece. It rotates with quarter-turn motion at 3000 rpm.
Since this motion (quarter turn to and fro oscillation) resembles motion of steering of a ship, it is called Giromatic.
Category:
Dental
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