Tooth Morphology Final Review

32 Questions

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Morphology Quizzes & Trivia

Questions and Answers
  • 1. 
    Which mandibular premolar is closest in form and function to a canine? 
    • A. 

      Tooth # 21

    • B. 

      Tooth # 22

    • C. 

      Tooth # 29

    • D. 

      Tooth # 20

  • 2. 
    On the mandibular first premolar, when looking at the occlusal outline of the buccal surface, which slope is shorter?
    • A. 

      Mesio-occlusal

    • B. 

      Disto-occlusal

  • 3. 
    On which of the following teeth is there a mesiolingual developmental groove that originates in the mesial pit and continues onto the mesial surface?
    • A. 

      Maxillary first premolar

    • B. 

      Maxillary second premolar

    • C. 

      Mandibular first premolar

    • D. 

      Mandibular second premolar

  • 4. 
    On the mandibular first premolar, there are how many cusps? How many are functional?
    • A. 

      2 cusps, both are functional

    • B. 

      2 cusps, only the buccal cusp is functional

    • C. 

      2 cusps, only the lingual cusp is functional

    • D. 

      3 cusps, only the buccal cusp is functional

  • 5. 
    The mandibular second premolar has two lingual cusps, and the distolingual cusp is wider and longer.
    • A. 

      True

    • B. 

      False

  • 6. 
    On the mandibular second premolar, the main groove pattern on the three cusp type takes the form of a...
    • A. 

      U

    • B. 

      Y

    • C. 

      C

    • D. 

      H

  • 7. 
    Which two teeth are more alike in size, shape and function?
    • A. 

      1st and 2nd maxillary premolars

    • B. 

      1st and 2nd mandibular premolars

  • 8. 
    In the maxillary arch, which tooth is larger?
    • A. 

      Maxillary first premolar

    • B. 

      Maxillary second premolar

  • 9. 
    In the mandibular arch, which tooth is larger?
    • A. 

      Mandibular first premolar

    • B. 

      Mandibular second premolar

  • 10. 
    Which ________ premolars crown dimensions are approximately equal, the __________ premolars are wider buccolingually than mesiodistally.
    • A. 

      Maxillary, mandibular

    • B. 

      Mandibular, maxillary

    • C. 

      First, second

    • D. 

      Second, first

  • 11. 
    Which premolar is most likely to exhibit two root branches?
    • A. 

      Mandibular first premolar

    • B. 

      Mandibular second premolar

    • C. 

      Maxillary first premolar

    • D. 

      Maxillary second premolar

  • 12. 
    The occlusalcervical dimension of the crown of this premolar is less than any anterior tooth but greater than any other premolar.
    • A. 

      Mandibular first premolar

    • B. 

      Mandibular second premolar

    • C. 

      Maxillary first premolar

    • D. 

      Maxillary second premolar

  • 13. 
    Which of the following premolars exhibits 3 pits?
    • A. 

      Mandibular first premolar

    • B. 

      Mandibular second premolar (Y type)

    • C. 

      Mandibular second premolar (U type)

    • D. 

      Maxillary first premolar

  • 14. 
    Which tooth has the most complex groove pattern?
    • A. 

      Mandibular 3rd molar

    • B. 

      Mandibular 2nd molar

    • C. 

      Mandibular 1st molar

  • 15. 
    The linguogingival groove is more commonly seen on which tooth?
    • A. 

      Maxillary lateral

    • B. 

      Maxillary central

    • C. 

      Mandibular lateral

    • D. 

      Mandibular central

  • 16. 
    At what age should a child have all of their deciduous teeth?
    • A. 

      3 years old

    • B. 

      2 years old

    • C. 

      6 months old

    • D. 

      6 years old

  • 17. 
    At what age do the deciduous teeth start being replaced by permanent teeth?
    • A. 

      6 years old

    • B. 

      7 years old

    • C. 

      8 years old

    • D. 

      9 years old

  • 18. 
    On the deciduous maxillary canine, which cusp ridge is longer?
    • A. 

      Mesial

    • B. 

      Distal

  • 19. 
    On the deciduous mandibular canine, which cusp ridge is longer?
    • A. 

      Mesial

    • B. 

      Distal

  • 20. 
    The deciduous first maxillary molar has a transverse and oblique rige.
    • A. 

      True

    • B. 

      False

  • 21. 
    On which tooth is the apex of the mesial root normally flat?
    • A. 

      Permanent mandibular first molar

    • B. 

      Permanent mandibular second molar

    • C. 

      Primary mandibular first molar

    • D. 

      Primary mandibular second molar

  • 22. 
    Permanent First mandibular molars typically have how many cusps?
    • A. 

      3

    • B. 

      4

    • C. 

      5

  • 23. 
    Deciduous mandibular first molars have one transverse ridge.
    • A. 

      True

    • B. 

      False

  • 24. 
    Which molar has the least complicated design of any molar?
    • A. 

      Mandibular first molar

    • B. 

      Maxillary first molar

    • C. 

      Mandibular second molar

    • D. 

      Maxillary second molar

  • 25. 
    Which is the most common specimen of a mandibular third molar?
    • A. 

      6 cusp pattern, 2 roots

    • B. 

      5 cusp pattern, 2 roots

    • C. 

      5 cusp pattern, 3 roots

    • D. 

      4 cusp pattern, 2 roots

  • 26. 
    Which cusp is largest on the maxillary first molar?
    • A. 

      MB

    • B. 

      ML

    • C. 

      DB

    • D. 

      DL

  • 27. 
    Which tooth has a crown that is least variable in anatomic form?
    • A. 

      Mandibular first molar

    • B. 

      Mandibular second molar

    • C. 

      Maxillary first molar

    • D. 

      Maxillary second molar

  • 28. 
    When you look at the permanent maxillary first molar from the buccal, how many cusps do you see?
    • A. 

      2

    • B. 

      3

    • C. 

      4

    • D. 

      5

  • 29. 
    The buccal roots of which teeth look like a "pair of pliers"?
    • A. 

      Maxillary third molar

    • B. 

      Maxillary second molar

    • C. 

      Mandibular first molar

    • D. 

      Maxillary first molar

  • 30. 
    Which molar has the most variable crown?
    • A. 

      Maxillary third molar

    • B. 

      Mandibular third molar

    • C. 

      Deciduous mandibular first molar

    • D. 

      Deciduous maxillary first molar

  • 31. 
    If a permanent mandibular canine is bifurcated, where would the roots be placed?
    • A. 

      There would be a mesial and distal root

    • B. 

      There would be a buccal and a lingual root

  • 32. 
    Which tooth is more rounded?
    • A. 

      Maxillary central

    • B. 

      Maxillary lateral