Table of Contents
What is a slow speed dental handpiece?
Low-speed handpieces are either air or electric powered and are used to prepare and remove cavities, thoroughly clean and polish teeth or remove resin without damaging or harming the tooth. Most slow speed dental handpieces operate at around 20,000 RPMs.
What is the recommended rpm when operating a slow speed handpiece?
Low speed handpieces are designed to handle much more air pressure than high speed handpieces. Typical low speed motors, without gear reductions, running at 40 PSI should spin at approximately 20,000 rpm.
What is the speed of dental handpiece?
High-speed handpiece. High-speed handpieces work at cutting speeds over 180,000 rpm. They are technically categorised into air turbine and speed-increasing depending on their mechanisms.
How fast does a high speed dental handpiece go?
Reaching speeds as high as 420,000 rpm, high-speed air-turbine dental handpieces may outrun electrics, which generally top out at 200,000 rpm, but they lack the torque of the latter, and have been known to stall under load. In fact, their speed may drop as much as 40% or more once their burs hit a surface.
What are low speed dental handpieces used for?
Low-speed handpieces are used for the removal of soft decay, finishing cavity preparation, polishing, trimming and prophy work.
What is the speed of micromotor?
The micro motor consists of flex print coils and a permanent magnet rotor. The size of the motor is 2.0 mm length and 1.0 mm outer diameter. With 1.0 A effective driving current, the motor can rotate a 0.3 mm mirror at a maximum speed of 3640 revolutions per second.
What are high speed handpieces used for?
The high speed handpiece is a precision device for removal of tooth tissue efficiently and rapidly with no pressure, heat or vibration and cut the tooth like butter. However these handpieces have to be used with caution.
Which of the shanks is used with a slow speed handpiece without an attachment?
Long straight shanks
Long straight shanks are used on slow speed handpieces, most commonly used for diamond cutting discs. Long straight shanks are also used in surgery procedures.
What is dental micromotor?
Dental micromotors are commonly used to treat semi-hard dental tissues in dentistry. A variable connection mechanism connects this instrument to the hoses of other dental equipment.
How often should dental handpieces be sterilized?
I read one of your articles regarding infection control. Do slow-speed handpieces really need to be sterilized after every patient when using disposable prophy angles? We are currently sterilizing at the end of each workday. Yes, slow-speed handpieces must be heat-sterilized in between every patient.
How are dental handpieces cleaned?
Do not immerse handpiece in water. Do not place handpiece in an ultrasonic bath. Remove bur from the handpiece. Clean the exterior of the handpiece with warm soapy water and a long-handled brush or a universal disinfectant wipe to ensure all debris and contaminates are visibly removed.
How do you lubricate a slow speed handpiece?
Lubricate the handpieces Place a few drops of lubricant into the drive air hole of the handpieces and run the handpiece at a slow speed until only lubricant comes out of the head. Then continue to expel any excess lubricant through bearings and chuck.
How do you sterilize a slow speed handpiece?
MTI Dental Products recommends steam autoclave sterilization of dental handpieces, motors and related attachments. Do not use chemiclave or dry heat sterilization. Nose cones, contra angles, and latch heads should be detached from motor and bagged separately for sterilization.