18/19 Key Terms

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Across
  1. 5. the grasping of an instrument in the same manner as one would grasp a pen or pencil
  2. 7. lines or ridges on the working ends of dental instruments
  3. 8. a rotary instrument used with dental handpieces; includes discs and stones
  4. 9. foot pedal on a dental handpiece that controls handpiece speed
  5. 10. the support or point on which a level turns (e.g., position of finger rest for support when working in a patient’s mouth)
  6. 15. the handle of an instrument
  7. 16. instrument used to smooth rough margins of the restoration and to shape metal matrix bands
  8. 18. allows radiation to pass through it so that it does not interfere with images on an x-ray
  9. 19. triangular pads that absorb the flow of saliva and protect the cheek
  10. 20. handpieces used to polish teeth and restorations, remove soft carious material, and define cavity margins and walls; achieve between 6,000 and 25,000 rpm
  11. 22. increased evacuation system to remove fluids from the patient’s mouth. Uses stainless steel or plastic tips
Down
  1. 1. handpieces used to rapidly cut tooth structure and finish restorations; rotates between 10,000 and 800,000 rpm
  2. 2. speeds of dental handpieces: Revolutions per minute
  3. 3. an air-driven handpieces
  4. 4. bur used to adjust acrylic materials, such as partials, dentures, and custom trays; also referred to as a laboratory bur
  5. 6. device the dentist uses that provides air or water or a combination spray of air and water
  6. 11. instrument used to pass cotton or other materials to the dentist
  7. 12. is used to assist the patient in keeping his or her mouth open during treatment.
  8. 13. attachment head for the low-speed handpiece; contra-angles hold burs, discs, stones, rubber cups, and brushes for intraoral and extraoral procedures; type of Tofflemire retainer, placed on the lingual side, angled slightly to clear the anterior teeth
  9. 14. instrument used to measure the depths of periodontal pockets, areas of recession, bleeding, or exudate; primary instrument in periodontal examinations
  10. 17. the section of the instrument that connects the handle to the working end
  11. 21. part of the instrument that performs the instrument’s function