Dental Handpieces and Accessories
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| In what decade were dental handpieces introduced? | 1940's
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| The high-speed handpiece operates from __________ pressure. | air
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| Which handpiece operates at speeds up to 450,000 rpm? | high-speed handpiece
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| At what speed does the low-speed handpiece operate? | 10,000 - 30,000 rpm
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| Which handpiece can operate both forward and backward? | low-speed handpiece
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| What type of handpieces are most effective when used for sealants and external stain removal? | air abrasion
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| What are restorative burs made from? | tungsten carbide
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| What is a mandrel? | metal shaft on which sandpaper disks are mounted
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| The prophylaxis angle attaches to which type of handpiece? | low-speed
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| What is the most commonly used bur in the dental laboratory? | acrylic bur
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| What type of materials are used to finish and polish esthetic materials? | finishing burs, sandpaper disks and cuttlebone point
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| What type of rotary instrument helps to shorten prep time, increase cutting ability and have a metal base with flecks of industrial diamonds? | diamond rotary instruments
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| The latch-type shank fits into ___________________________ for a __________________ handpiece. | contra-angle; low-speed
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| Which handpiece uses a beam of light to cauterize soft tissue and vaporize decayed tooth structure? | laser handpiece
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| How does an ultrasonic handpiece function? | uses mechanical, radiant water energy and sound vibrations to create a pulsating effect
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| What does the pulsating effect on the tooth surface accomplish? | removal of calculus and decay
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| A finishing bur has fewer blades than a restorative bur. T or F | False, it has MORE blades
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| Abrasive rotary instruments are the most varied category of rotary instruments. T or F | True
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| Define bur. | rotary instrument that has a sharp cutting head
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| What type of bur is used to remove decay during tooth preparation? | round bur
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| Which shaped diamond rotary instrument provides access to the pulp chamber? | round-shaped
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| How is a dental handpiece prepared for use between patients? | it MUST be sterilized
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| A dental handpiece is a semi-critical instrument. T or F | False, it is a CRITICAL instrument
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| What are ultrasonic instruments used for? | scaling
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| What particles are delivered through a small probe of an air abrasion handpiece to remove tooth structure? | aluminum oxide
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| What does torque mean? | twisting and turning force
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| A _______________________________ handpiece has the greatest torque. | laboratory
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| Which type of handpiece offers pain-free treatment? | laser
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