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