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  1. 1. FOR HM3 TEST TAKERS DT VOLUME TWO CHAPTER THREE PREVENTIVE DENTISTRY GRADING SHEET 1. Where can you find details for the preventive dentistry program? BUMEDINST 6600.13 2. What term means prevention of disease? PROPHYLAXIS 3. Who can only remove subgingival calculus? DENTAL OFFICER OR DENTAL HYGIENIST 4. What is the form for Dental Health Questionnaire? NAVMED 6600/3 5. At what angle do you position the back of the patient’s chair? 15 6. What is the right hand operating position for 9 O’clock? SIDE OF THE PATIENT 7. What is the right hand operating position for 12 O’clock? SEATED TO THE REAR OF THE PATIENT 8. What is the left hand operating position for 4 O’clock? SEATED FRONT OF THE PATIENT 9. What is nearly transparent and difficult to see without the use of stain? PLAQUE
  2. 2. FOR HM3 TEST TAKERS 10. The ultrasonic scaler converts electrical energy into _______microscopically small mechanical strokes per second. 30,000 11. What produces the power required to activate the handpiece? ELECTRONIC GENERATOR 12. What is the water supply pressure range? 25 TO 60 PSI 13. How often do you flush the waterline? DAILY 14. How long do you flush the waterline before each patient? 30 SECONDS 15. What type of ultrasonic tip is used on lingual and facial posterior surfaces? BEAVER TAIL 16. What type of ultrasonic tip is used to remove subgingival calculus? PERIODONTAL PROBE 17. How long do you have a patient rinse their mouth with antimicrobial mouthwash? 30 SECONDS 18. What are the Air Polishing Unit’s three major components? AIR POLISHING DELIVERY SYSTEM, FOOT CONTROLLED SWITCH, AND HANDPIECE ASSEMBLY 19. When using the air polishing unit, you keep the handpiece tip approximately how far from the surface of the tooth being cleaned? 4MM TO 5MM
  3. 3. FOR HM3 TEST TAKERS 20. At what temperature should the cleaning powder be kept for the Air Polishing Unit? 95 FARENHEIT 21. What is an air powered, mechanical scaler that runs at sonic frequency? SONIC SCALER 22. How many sonic scaler tips are there? 3 23. What sonic scaler tip is recommended for sensitive patients? SICKLE 24. What dental instrument is used for tactile examination of the teeth? EXPLORER 25. In what area of the mouth do you commence your periodontal scaling? MANDIBULAR ANTERIOR TEETH 26. What type of instrument grasp do you use to maintain control of the instrument? FINGER REST 27. What type of calculus can dental technicians remove? SUPRAGINGIVAL CALCULUS 28. What will appear as a white, chalky or yellowish deposit on a tooth surface? SUPRAGINGIVAL CALCULUS 29. How many basic scaling strokes are there and what are they? 4, EXPLORATORY, VERTICAL, HORIZONTAL 30. What type of scaling stroke is considered the safest? VERTICAL
  4. 4. FOR HM3 TEST TAKERS 31. The oblique or slanted stroke is made at ____angle to the long axis of the tooth. 45 32. What removes plaque or stains remaining on the teeth after thorough scaling? TOOTH POLSIHING 33. How many different methods can topical fluoride be administered? THREE 34. What do you use to paint fluoride on the teeth? COTTON TIP APPLICATOR 35. What is generally regarded as the most effective means of topical fluoride treatment? GEL APPLICATION 36. How long do you keep the fluoride gel tray in a patient’s mouth? 4 MINUTES 37. After a patient has received fluoride treatment, they should not drink or smoke for how long? 30 MINUTES 38. What is the technical term for gums? GINGIVA 39. What is one of the major causes of tooth decay and periodontal disease? BACTERIAL PLAQUE 40. For most people, where does dental decay most often occur? PROXIMAL SURFACES 41. How long should a dental floss be? 18 INCHES
  5. 5. FOR HM3 TEST TAKERS 42. What are thin plastic devices that help the patient floss beneath the pontics of fixed partial dentures? FLOSS THREADERS 43. What type of training does a dental technician need to be able to apply pit and fissure sealants? EXPANDED FUNCTIONS 44. What type of etching material do you use for sealants? 30 TO 50 PERCENT PHOSPHORIC ACID 45. How long do you apply the etching material to the tooth? 15 TO 20 SECONDS 46. If you contaminated the etching site, how long should you re-etch the tooth? 20 SECONDS 47. What is the most common reason for sealant failure? CONTAMINATION