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A Lentulo spiral. The notches at left allow it to fit into a slow-speed latch handpiece. A Lentulo spiral is a dental instrument used to properly distribute root canal sealer and cement evenly throughout the root canal system, as when performing endodontic therapy or a post and core cementation.
As the speed of a handpiece increases, its torque subsequently decreases (slow-speed handpieces have high torque, whereas high-speed handpieces, like the air turbine system, have a low torque) The free running speed of 1:5 gear ratio electric handpiece is the same as its cutting speed; thus, 40,000 motor speed x 5 = 200,000 rpm burr speed.
Self-ligating brackets can be of two types. Active self-ligating brackets have a clip that works to press on the archwire and a wire bracket interaction is observed. A passive self-ligating bracket has a door, which when closed, does not lead to any pressure on the archwire. [11] Examples of active types include In-ovation, SPEED and Timelock ...
For instance, a latch type, or right angle bur, is only used in the slow-speed handpiece with contra-angle attachment. A long shank or shaft is only used in slow speed when the contra-angle is not in use, and finally, a friction grip bur, which is a small bur, is used only in the high-speed handpiece.
Midwest Dental Care was founded in 1968 by David Hehli with the opening of his first clinic in Mondovi, Wisconsin. He eventually grew his practice to several dental offices throughout Wisconsin. Midwest Dental became the largest solely owned dental practice in the country at that time. Hehli died on July 16, 2020, at the age of 77. [1]
Dental aerosol from a dental hand piece. A dental aerosol is an aerosol that is produced from dental instrument, dental handpieces, three-way syringes, and other high-speed instruments. These aerosols may remain suspended in the clinical environment. [1] Dental aerosols can pose risks to the clinician, staff, and other patients
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