Dental Assistant Test: Trivia Quiz!

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Dental Assistant Test: Trivia Quiz!

Do you think you have what it takes to pass this Dental Assistant Test? It is perfect for someone who is preparing for their finals because it has all the basics that an attendant should know for sure. Do give it a try and see just how well you will do in practice and the exams, you are about to take up.


Questions and Answers
  • 1. 
    One of the most common restorative materials in dentistry is composite.
    • A. 

      True

    • B. 

      False

  • 2. 
    Direct restorations include amalgam and gold crowns.
    • A. 

      True

    • B. 

      False

  • 3. 
    Composite resins are stronger than amalgam or gold.
    • A. 

      True

    • B. 

      False

  • 4. 
    Polymerization is the process in which the resin material is changed from a pliable state into a hardened restoration.
    • A. 

      True

    • B. 

      False

  • 5. 
    Macrofilled composites contain the smallest filler particles providing the least strength.
    • A. 

      True

    • B. 

      False

  • 6. 
    One reason temporary restorations are used is to maintain the function and esthetics of a tooth until a permanent restoration can be placed.
    • A. 

      True

    • B. 

      False

  • 7. 
    Common uses of Intermediate Restorative Material include restorative emergencies and restoration of primary teeth.
    • A. 

      True

    • B. 

      False

  • 8. 
    Indirect restorations materials include gold alloys and ceramic materials.
    • A. 

      True

    • B. 

      False

  • 9. 
    Porcelain material is chosen as a restorative material because the shading matches tooth color well.
    • A. 

      True

    • B. 

      False

  • 10. 
    For longer than 150 years, billions of dental amalgam fillings has been used to restore decayed teeth.
    • A. 

      True

    • B. 

      False

  • 11. 
    The types of supplemental materials selected by the dentist will determine how the tooth will be prepared.
    • A. 

      True

    • B. 

      False

  • 12. 
    Calcium hydroxide is NOT a bonding material.
    • A. 

      True

    • B. 

      False

  • 13. 
    The application of a varnish helps to seal the dentinal tubules.
    • A. 

      True

    • B. 

      False

  • 14. 
    Dental bases are used to provide pulpal protection in the following ways: Protective bases, insulating bases, and sedative bases.
    • A. 

      True

    • B. 

      False

  • 15. 
    With the use of bonding materials, it is now possible to bond restorative materials to enamel and dentin.
    • A. 

      True

    • B. 

      False

  • 16. 
    Acid etching is a technique in which acid is placed on either the enamel or gingiva to remove the smear layer in preparation for bonding.
    • A. 

      True

    • B. 

      False

  • 17. 
    An example of enamel bonding is a sealant or orthodontic bracket.
    • A. 

      True

    • B. 

      False

  • 18. 
    The mixing time for dental cements is the same no matter which materials you are using.
    • A. 

      True

    • B. 

      False

  • 19. 
    Glass ionomer cement MUST be mixed on a cool glass slab.
    • A. 

      True

    • B. 

      False

  • 20. 
    A porcelain casting is chosen over other castings because it
    • A. 

      Has higher strength.

    • B. 

      Has the ability to match natural tooth structure.

    • C. 

      Is a good insulator.

    • D. 

      All of the above.

  • 21. 
    ________ occurs when a metal restoration is touched by a fork.
    • A. 

      Microleakage

    • B. 

      Galvanic action

    • C. 

      Sheer stress

    • D. 

      Corrosion

  • 22. 
    A properly triturated amalgam mix should:
    • A. 

      Be a hard mass.

    • B. 

      Contain dry particles.

    • C. 

      Be a soft, pliable mass.

    • D. 

      Separate when packed.

  • 23. 
    A difference in the cavity preparation of amalgam versus composite is:
    • A. 

      More retention is cut into the prep for composite.

    • B. 

      Amalgam requires the use of a bonding system.

    • C. 

      Composites are more compatible with most dental materials used for bases.

    • D. 

      Composites require the use of a bonding system.

  • 24. 
    A liquid with high viscosity _____ flow easily and _____ effective in wetting a surface.
    • A. 

      Does; is

    • B. 

      Does; is not

    • C. 

      Does not; is

    • D. 

      Does not; is not

  • 25. 
    Glass ionomer can be used for class _____ restorations.
    • A. 

      II

    • B. 

      III

    • C. 

      IV

    • D. 

      V

  • 26. 
    Ideally, composite resin shades should be chosen in:
    • A. 

      Daylight.

    • B. 

      Normal ambient light.

    • C. 

      Bright light.

    • D. 

      Operatory light.

  • 27. 
    _____ is the process by which the resin material is changed from a pliable state into a hardened restoration.
    • A. 

      Trituration

    • B. 

      Retention

    • C. 

      Polymerization

    • D. 

      Galvanism

  • 28. 
    _____ is added to dental amalgam alloy powder to suppress oxidation.
    • A. 

      Silver

    • B. 

      Tin

    • C. 

      Copper

    • D. 

      Zinc

  • 29. 
    The addition of _______ alloy to glass ionomers produces a product that can be used for core buildups and the repair of fractured cusps and amalgam fillings as well as abutments for overdentures.
    • A. 

      Copper

    • B. 

      Silver-tin

    • C. 

      Gold

    • D. 

      Zinc

  • 30. 
    The curing process in which it is the most critical that the materials are mixed and placed within the working and setting times is with ________ materials.
    • A. 

      Auto-cured

    • B. 

      Light-cured

    • C. 

      Dual-cured

    • D. 

      None is more critical than another.

  • 31. 
    New dental materials must undergo strict evaluation by _____ before they can be marketed.
    • A. 

      FDA

    • B. 

      ADA

    • C. 

      MDA

    • D. 

      ADAA

  • 32. 
    The dental restorations created in the laboratory by the dental laboratory technician are classified as:
    • A. 

      Direct restorations.

    • B. 

      Indirect restorations.

    • C. 

      Provisional restorations.

    • D. 

      Amalgams

  • 33. 
    The resin matrix component of composite is dimethacrylate, a fluid-like material also referred to as:
    • A. 

      Quartz.

    • B. 

      Silica.

    • C. 

      IRM.

    • D. 

      BIS-GMA.

  • 34. 
    The term ‘restorative’ describes the ability to:     
    • A. 

      Remove disease.

    • B. 

      Restore function.

    • C. 

      Be esthetic.

    • D. 

      Both a and b.

  • 35. 
    The type of ceramic most often used in dentistry for castings is:
    • A. 

      Composite resin.

    • B. 

      Glass ionomer.

    • C. 

      Zinc oxide-eugenol cement.

    • D. 

      Porcelain.

  • 36. 
    Which is not true of nonmercury alloys?
    • A. 

      They are not sensitive to moisture.

    • B. 

      They are placed after a resin liner.

    • C. 

      They require the application of a sealant over the restoration.

    • D. 

      All of these are true.

  • 37. 
    Which of the following are advantages to using glass ionomer as a restorative material?
    • A. 

      Glass ionomer has the ability to bind to teeth mechanically, rather than chemically.

    • B. 

      Glass ionomer releases fluoride after their final setting.

    • C. 

      Loss of gloss indicates a proper mix of glass ionomer material.

    • D. 

      There is no need to avoid contact with water during the mixing procedure for glass ionomer.

  • 38. 
    Which will not influence the curing time of composite restorations?
    • A. 

      Manufacturer’s instructions

    • B. 

      The base used

    • C. 

      Thickness or size of restoration

    • D. 

      The shade of the restoration

  • 39. 
    Varnish should be placed on the ______ of the preparation.
    • A. 

      Walls

    • B. 

      Floor

    • C. 

      Margins

    • D. 

      All of the above

  • 40. 
    Etching for dental bonding is done with:
    • A. 

      Phosphoric acid.

    • B. 

      Ammonia.

    • C. 

      Isopropyl alcohol.

    • D. 

      Hydrogen peroxide.

  • 41. 
    A dental liner is placed:
    • A. 

      Along inside of cavity walls.

    • B. 

      Mesial and distal of the tooth.

    • C. 

      In the deepest area of the tooth preparation.

    • D. 

      Along the interproximal margin.

  • 42. 
    Calcium hydroxide:
    • A. 

      Cannot be placed under direct composite resins because it will inhibit polymerization.

    • B. 

      Stimulates the production of reparative dentin.

    • C. 

      Functions as a thick base to support extensive restorations.

    • D. 

      Consists of a resin in an organic solvent.

  • 43. 
    A desensitizer could be indicated for which of the following procedures?
    • A. 

      Amalgam

    • B. 

      Sealants

    • C. 

      Provisional coverage

    • D. 

      Fluoride

  • 44. 
    Bonding agents or adhesives:
    • A. 

      Can be light-cured.

    • B. 

      Must be used after etching.

    • C. 

      Are available as self-cured.

    • D. 

      All of the above.

  • 45. 
    Insulating base material should cover the entire _______ to a thickness of _____ mm.
    • A. 

      Cavity preparation; 1-2

    • B. 

      Pulpal floor; 1-2

    • C. 

      Cavity preparation; 2-3

    • D. 

      Pulpal floor; 3-4

  • 46. 
    Calcium hydroxide liner is a frequently used liner because it:
    • A. 

      Stimulates production of secondary dentin.

    • B. 

      Can be used with only composite resin material.

    • C. 

      Acts as a base as well as a liner.

    • D. 

      Does not require the use of a filling material.

  • 47. 
    Dental bonding is also referred to as a:
    • A. 

      Dental adhesion.

    • B. 

      Dental liner.

    • C. 

      Desensitizer.

    • D. 

      None of the above.

  • 48. 
    Etchant removes the _____ layer in preparation for bonding.
    • A. 

      Varnish

    • B. 

      Cavity liner

    • C. 

      Smear

    • D. 

      Sclerosing

  • 49. 
    If a varnish is used, it is always used before other materials.
    • A. 

      True

    • B. 

      False

  • 50. 
    Which of the following materials used as a base needs to set at least 5 minutes before placing the restoration?
    • A. 

      Polycarboxylate cement

    • B. 

      ZOE

    • C. 

      Zinc phosphate cement

    • D. 

      Desensitizing materials

  • 51. 
    You are asked to select a base for a deep cavity preparation because of extensive decay. Which would you select?
    • A. 

      Zinc oxide eugenol

    • B. 

      Zinc phosphate

    • C. 

      Polycarboxylate

    • D. 

      Any of the bases

  • 52. 
    If decay has extended into or close to the pulp, which material(s) may be indicated?
    • A. 

      Liner/varnish

    • B. 

      Base/desensitizer

    • C. 

      Bonding agent

    • D. 

      Any or all of the products

  • 53. 
    Types of pulpal stimuli may be:
    • A. 

      Physical.

    • B. 

      Mechanical

    • C. 

      Chemical or biologic.

    • D. 

      All of the above

  • 54. 
    Which of the following is an example of biological pulpal stimuli?
    • A. 

      Changes from hot and cold coming into contact with the tooth

    • B. 

      Traumatic occlusion, which occurs when a persons bite does not occlude properly

    • C. 

      Acidic materials reaching pulpal tissues

    • D. 

      Bacteria from saliva coming into contact with pulpal tissues

  • 55. 
    Protective bases are placed when it is necessary to protect the pulp before the restoration is placed, because without this protection there may be:
    • A. 

      A premature contact on the restorative material.

    • B. 

      Occlusal trauma.

    • C. 

      Postoperative sensitivity and damage to the pulp.

    • D. 

      Premature loss of the restorative material.

  • 56. 
    Varnish should be placed:
    • A. 

      In one thick layer.

    • B. 

      In two light coats.

    • C. 

      Before a sedative base.

    • D. 

      None of the above.

  • 57. 
    Which is NOT true in the application of etchant material?
    • A. 

      The tooth must be free of debris.

    • B. 

      The tooth must be thoroughly dried.

    • C. 

      The etchant gel is placed only where needed.

    • D. 

      It is cured for 15 to 30 seconds.

  • 58. 
    Zinc phosphate cement should be mixed:
    • A. 

      On a cool glass slab.

    • B. 

      On a warm glass slab.

    • C. 

      On a paper pad.

    • D. 

      Quickly.

  • 59. 
    Which of the following will NOT help to dissipate heat when mixing zinc phosphate cement?     
    • A. 

      Mixing on a cool glass slab

    • B. 

      Adding small increments

    • C. 

      Spatulate over a large area of the slab

    • D. 

      Mixing quickly

  • 60. 
    Which of the following will not minimize the loss of water from evaporation when working with dental cements?     
    • A. 

      Dispensing powder first and then liquid

    • B. 

      Dispensing the liquid first and then powder

    • C. 

      Dispense liquid when it is time to mix the cement

    • D. 

      Keeping the lid on the liquid

  • 61. 
    Which cement inhibits recurrent decay?     
    • A. 

      Zinc phosphate

    • B. 

      Glass ionomer

    • C. 

      Zinc oxide-eugenol

    • D. 

      Composite resin

  • 62. 
    Which is NOT true of the preparing the tooth for a composite resin cementation?     
    • A. 

      Etch enamel and dentin for 15 seconds.

    • B. 

      Rinse completely.

    • C. 

      Blot the tooth with a cotton pellet.

    • D. 

      Dry the tooth completely.

  • 63. 
    The cement that gives off an exothermic reaction and must be spatulated over a wide area of a cool, dry, thick glass slab is:     
    • A. 

      Zinc oxide-eugenol (ZOE).

    • B. 

      Polycarboxylate.

    • C. 

      Zinc phosphate

    • D. 

      Composite resin.

  • 64. 
    The dental assistant may have the responsibility of placing the mixed cement into the casting. The cement should be loaded:     
    • A. 

      Into the casting until it is overflowing.

    • B. 

      So that a thin lining covers all internal walls of the casting.

    • C. 

      To the top margin of the crown so that it is full.

    • D. 

      Only on the very bottom of the crown.

  • 65. 
    Which of the following cement types is(are) the most versatile and the least irritating to the pulp?     
    • A. 

      ZOE cement

    • B. 

      Glass ionomer cement

    • C. 

      Composite resin cement

    • D. 

      Both a and b

  • 66. 
    Which of the following is the most important rule to follow when preparing dental cements?     
    • A. 

      Working as quickly as possible

    • B. 

      Following the manufacturer's instructions

    • C. 

      Making the mix as thick as possible

    • D. 

      Doing all of the above

  • 67. 
    A _____ is classified as a type I dental cement and acts as an adhesive to hold together the indirect restoration and the tooth structure.     
    • A. 

      Temporary cement

    • B. 

      Luting cement

    • C. 

      Provisional cement

    • D. 

      Liner

  • 68. 
    If excess cement is not removed from in and around the gingival margin and sulcus of the tooth, the cement can:     
    • A. 

      Dissolve out from under the crown, which then may be lost or swallowed.

    • B. 

      Irritate the area and cause inflammation and discomfort.

    • C. 

      Demineralize the enamel.

    • D. 

      Create an occlusal prematurity.

  • 69. 
    When dispensing most cement, generally the powder should be _______ before dispensing.     
    • A. 

      Packed

    • B. 

      Fluffed

    • C. 

      Measured

    • D. 

      Both b and c

  • 70. 
    A cement frequently used for cementing provisional coverage is:     
    • A. 

      Type I .

    • B. 

      Type II ZOE.

    • C. 

      Composite resin.

    • D. 

      Glass ionomer.

  • 71. 
    Permanent cements are used for luting all except:     
    • A. 

      Laminate veneers.

    • B. 

      Orthodontic fixed appliances.

    • C. 

      Provisionals.

    • D. 

      Cast restorations.

  • 72. 
    Polycarboxylate cement:     
    • A. 

      Forms a mechanical bond to tooth structure.

    • B. 

      Is generally used as a temporary sedative cement.

    • C. 

      Is less irritating to the pulp than zinc phosphate cement.

    • D. 

      Must be mixed on a glass slab.

  • 73. 
    Which is the correct cementing consistency for zinc phosphate cement?
    • A. 

      The cement should be soupy.

    • B. 

      The cement should string up and break about 1 inch from the slab.

    • C. 

      The mix should be slightly tacky.

    • D. 

      The mix should form in a ball.

  • 74. 
    To increase the working time of glass ionomer it can be mixed:     
    • A. 

      Quickly.

    • B. 

      Slowly.

    • C. 

      On a glass slab.

    • D. 

      None of the above.

  • 75. 
    When removing cement from a casting, never:     
    • A. 

      Use a explorer.

    • B. 

      Use a firm fulcrum.

    • C. 

      Move instruments in a horizontal direction.

    • D. 

      Pull excess cement down away from the casting.

  • 76. 
    Which is NOT true of the preparing the tooth for a composite resin cementation?     
    • A. 

      Etch enamel and dentin for 15 seconds.

    • B. 

      Rinse completely.

    • C. 

      Blot the tooth with a cotton pellet.

    • D. 

      Dry the tooth completely.

  • 77. 
    Which of the following is the most important rule to follow when preparing dental cements?     
    • A. 

      Working as quickly as possible

    • B. 

      Following the manufacturer's instructions

    • C. 

      Making the mix as thick as possible

    • D. 

      Doing all of the above

  • 78. 
    Which type(s) of cements can be light-cured?     
    • A. 

      Composite resin

    • B. 

      Glass ionomer

    • C. 

      ZOE

    • D. 

      Both a or b