
3
ENGLISH
Endodontic Contra Angle Handpiece
M4 Safety Handpiece
OPERATION MANUAL
: AUTOCLAVABLE : Thermo-Disinfectable (M-type)
Please read this Operation Manual carefully and le for future reference.
“Warning: Electrical micromotors generate signicantly more power than
traditional air turbines and air motors. Poorly maintained, worn, damaged,
or misused handpieces may generate frictional heat capable of causing
serious burn injuries to the patient. Heat generation may occur quickly and
without prior warning. Handpieces must be properly maintained according
to the specied maintenance schedule and inspected for signs of wear prior
to each use.”
Caution
• Forusebyqualiedcliniciansonly.
• Ifyouexperienceanyproblems,stopimmediately.Donotuseandcontact
SybronEndo.
• Donotdroptheunitontoahardsurface.
• Disconnectthesheathonlyafterthedriverunithascompletelystopped.
• Donotwipeorcleanwithhighacidwaterorsterilizingsolutions.
• Whenoperatingthehandpiecealwaysconsiderthesafetyofthepatient.
• Donotusenon-ISOstandardles.
• Donotquicklyheatnorquicklycoolafterautoclaving.
• Donotdisassemblenoralterthehandpiece.
• Alwayswatchforvibration,sound,temperaturerise,burwobbleand
other abnormalities.
• Donotexceed10,000rpmonmotor1:1setting.
• Notforusewithair-drivenmotors.Useonlyelectricmotors.
DIRECTIONS FOR USE
The M4 Safety Handpiece, designed for the mechanical preparation of root
canals, features a simplied chuck mechanism permitting one handed
insertion of manual endodontic instruments and precludes the necessity of
handlingthesterilizedinstrument.Itisrecommendedthatcliniciansuse
theM4SafetyHandpieceonplasticendoblocksorextractedteethbefore
adopting the handpiece into standard use.
USE
TheM4SafetyHandpieceisdesignedtoeectivelyandsafelyinstrument
canals.The chuck oscillates 30 degrees in an ecient, watch-winding motion.
The gear reduction ratio is 4:1.The M4 Safety Handpiece accommodates
instrumentswithamaximumhandlediameterof4mm.Itcanbeconnectedto
E-type motors, and is in accordance with DIN 13.940 and ISO DIS 3964. A spray
cooling attachment is not required.