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  1. what are the four types of hand instruments
    • probe
    • explorer
    • scaler
    • curette
  2. what are the parts to the hand instruments
    • handle
    • shank-neck
    • working end
  3. what 2 hand instruments usually manufacture as one piece
    probe and explorer
  4. probe
    banded in mm for measuring pocket depth
  5. explorer
    • used to detect plaque and calculus
    • check for cavities and exposed pulp chambers
    • checks for cervical line lesions and surface irregularities
  6. what are the different types of explorers
    • Shepherds Hook
    • Pigtail Explorer
  7. Shepherds Hook
    most common
  8. Pigtail explorer
    twisted to allow only tip (not sides) of instrument to touch tooth
  9. calculus removal forceps
    • allows quick removal of large pieces of calculus
    • one end is larger than the other
  10. what do you do with the long of forceps
    place over crown
  11. what do you do with the short end of forceps
    place under edge of calculus
  12. scalers
    • three sharp sides, sharp tip
    • scales calculus from crown surface
  13. what instrument don't we use subgingivally and why
    scaler because could damage gingiva and periodontal ligament
  14. where are most of the teeth
    on the buccal surface of the teeth
  15. curettes
    two sharp sides, round toe
  16. what instrument can be used subgingivally and supragingivally
  17. where does the sharp edge of the curettes go
    towards the tooth
  18. what does the round toe of the curette keep you from doing
    keeps you from causing damage to the gingiva
  19. power scaler
    converts electrical or pneumatic energy into mechanical vibration
  20. what does the vibration from power scaler do
    shatters calculus
  21. what are the three type of power scalers
    • ultrasonic
    • sonic and rotary
  22. ultrasonic scaler
    • converts sound waves into mechanical vibration
    • most commonly used
    • used supragingivally and subgingivally but be careful
  23. sonic and rotary
    converts air into mechanical vibration
  24. what does most of the work on power scaler
    vibrating tip
  25. what is the biggest concern using the power scaler
  26. what does the water do in the power scaler
    cools the tooth
  27. how long should you stay in tooth using the power scaler
    a few sec then move on to the next one
  28. what is the power scaler used for
    fine plaque
  29. what don't you use the power scaler for
    to remove obvious big chunks of plaque
  30. where are the sound waves picked up from in the ultrasonic scaler
    • picked up at hand piece
    • device in hand piece pick up sound waves and turns it into vibration
  31. ultrasonic metal strips/stacks
    18k, 25k, 30k cycles/second
  32. what is the amplitude of tip movement in ultrasonic scaler
    • 0.01-0.05mm
    • very small movement
    • very narrow motion
  33. why is it better to have lower amplitude using the ultrasonic scaler
    causes less damage to tooth
  34. ultrasonic and combination electrical motor
    • used for polishing and simple cutting of teeth
    • usually not as effective as air power
    • low speed hand speed not good to extract wit sectioning teeth
    • we have this one
  35. what do to you do if a metal strip/stock unit is used as a ultrasonic tip
    turn unit on and let it fill with water before inserting strip
  36. what are the 3 types of ultrasonic tip
    • beaver tail tip
    • perioprobe tip
    • furcation tip
  37. beaver tail tip
    • wide tip
    • supragingival cleaning
  38. perioprobe tip
    • thin
    • can be used subgingivally
  39. furcation tip
    • hooked to left or right- increased access to nooks and crannies
    • can be used subgingivally
    • curved
    • branch off
  40. do we used rotary scalers why or why not
    no because can easily damage tooth and burs become dull quickly
  41. what are the dental units for polishing and drilling
    • electric motor powered system
    • air powered system
    • air compressor system
    • low speed hand piece
    • high speed hand piece
  42. electric motor powered system
    • least expensive
    • operate at lower speed
    • higher torque
    • not as good as air powered systems
    • -usually don't come with water or irrigation system
  43. air powered systems
    • cylinder-room air or nitrous (don't use)
    • air compressor- most prevalent
  44. air compressor system
    • pumps air into an air storage tank
    • pressure in tank reaches 80-100 psi; compressor turns off
    • hand piece uses 30-40 psi
    • when pressure has decreased to minimum setting compressor kicks in again
  45. low speed hand pieces
    • high torque and slow speed (5k-20k rpm)
    • used for polishing with porphy angles
    • and other procedures with contra angles (attachment used to change either direction or speed rotation)
    • lubricate at end of each day; according to manufacturer specs
    • can be used for cutting disk
  46. high speed hand piece
    • 300k-400k rpm
    • used for cutting teeth and root canal entries
    • lubricate daily
  47. what should employers provide for safety requirements
    • safety glasses
    • mask
    • gloves
  48. what is employees responsibility
    to use safety requirements
  49. eye protection
    prevent foreign objects and bacteria from entering eye
  50. mouth/lung protection
    biological vapor from high speed equipment
  51. hand/skin protection
    disease control and prevents infection
Card Set:
2013-09-10 02:20:22

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