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42 Cards in this Set
- Front
- Back
1. What major traits distinguish the maxillary premolars from the mandibular from the buccal view?
Two things... |
1. Buccal ridge is more prominent
2. No distal crown tilt relative to root |
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2. What major traits distinguish the mandibular premolars from the maxillary from the buccal view?
Two things... |
1. Buccal ridge is less prominent
2. Crown exhibits slight distal tilt on root |
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3. What major traits distinguish the maxillary premolars from the mandibular from the lingual view?
Two things... |
1. Lingual cusps relatively longer than mandibular
2. Tip of lingual cusp is offset towards mesial |
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4. What major traits distinguish the mandibular premolars from the maxillary from the lingual view?
Two things... |
1. Lingual cusps relatively shorter
2. Lingual cusp tip is centered or two lingual cusps |
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5. What major traits distinguish the maxillary premolars from the mandibular from the proximal view?
Two things... |
1. Crown tips aligned over root
2. Lingual cusp is just slightly shorter than buccal |
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6. What major traits distinguish the mandibular premolars from the maxillary from the proximal view?
Two things... |
1. Crown tilts to lingual relative to root
2. Lingual cusp is much shorter than buccal |
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7. What major traits distinguish the maxillary premolars from the mandibular from the occlusal view?
Two things... |
1. Crown shape oval or rectangular
2. Crown is considerably wider FL than MD |
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8. What major traits distinguish the mandibular premolars from the maxillary from the occlusal view?
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1. Crown shape is closer to square
2. Crown less oblong FL |
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9. How is the cusp of the maxillary first premolar an exception to the rule?
What is a consequence of this |
Buccal cusp tip is placed slightly distal
Longer mesial cusp ridge |
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10. Where are there depressions on the maxillary premolars from the buccal view?
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First - mesial buccal ridge depression
Second - distal buccal ridge depression |
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11. How do the cusp angles of the maxillary premolars compare?
Which maxillary premolar has a more prominent buccal ridge? Which cusp ridge is longer for the maxillary first premolar? second? |
First is sharper, second is more blunt
First premolar First - mesial cusp ridge Second - distal cusp ridge |
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12. How do the outlines of the maxillary premolars compare?
How do they taper from contact areas? |
First - bulging shoulders
Second - narrow, more rounded First tapers more from contacts to cervix |
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13. How can you differentiate the right and left maxillary first premolar from the buccal view?
Three things... |
1. Longer mesial cusp ridge
2. Depression mesial to buccal ridge 3. Root often curves distal |
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14. How can you differentiate the right and left maxillary second premolar from the buccal view?
Three things... |
1. Shorter mesial cusp ridge
2. Depression distal to buccal ridge 3. Root often curves distal |
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15. How can you differentiate the right and left maxillary first and second premolars from the lingual view?
Two ways... |
1. Lingual cusp tip is bent towards distal
2. Length of buccal cusp ridges -mesial longer on first -distal longer on second |
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16. Which premolar has one cusp longer than the other from the proximal view?
How are the cusp tips spaced on the maxillary premolars from the proximal view? |
First (buccal cusp)
Closer on first and farther apart on second |
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17. Where are there depression seen on the maxillary first premolar from the proximal view?
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1. Mesial crown and root depression
2. Mesial root depression is deeper than distal 3. Mesial marginal ridge groove |
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18. Where are there depression seen on the maxillary second premolar from the proximal view?
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1. Mesial root depression
2. Distal root depression is deeper than mesial |
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19. How can one differentiate the right and left maxillary second premolar from the proximal view?
Two ways... |
1. Flat/convex mesial root surface at cervix
2. Greater mesial than distal cervical line curvature |
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20. How do the mesial sides of the maxillary premolars compare from the occlusal view?
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First - mesial side is flat or concave
Second - mesial side is more convex |
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21. How can one differentiate the right and left maxillary first premolar from the occlusal view?
Three ways... |
1. Hallmark trait - mesial marginal ridge groove
2. Lingual cusp tipped toward mesial 3. Distal marginal ridge is longer than mesial |
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22. How can one differentiate the right and left maxillary second premolar from the occlusal view?
Two ways.... |
1. Lingual cusp tipped to mesial
2. Distal marginal ridge is longer than mesial |
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23. How do the crowns of mandibular premolars compare from the buccal view?
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First
1. Longer crown 2.Tapers from contact to cervix Second 1. Shorter, wider crown 2. Relatively wider at cervix |
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24. Which mandibular premolar has a more pointed buccal cusp tip?
Which one has a more prominent buccal ridge? Which one has a longer root with blunt apex? |
First
First Second *First has shorter root with pointed apex |
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25. How can one differentiate left and right mandibular first and second premolars?
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Mesial cusp ridge is shorter
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26. What is special about the contact area of the mandibular first premolar?
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Mesial contact is more cervical than distal
*Exception to a rule |
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27. How do the crowns of the mandibular premolars compare from the lingual view?
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First - narrow crown on lingual
Second - wide on lingual *Exception to a rule |
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28. Where are there grooves on the mandibular premolars from the lingual view that are hallmarks?
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First - mesiolingual groove in mesial marginal ridge
Second - lingual groove between two lingual cusps |
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29. From which proximal view is more of the occlusal surface visible on the mandibular first premolar from the lingual aspect?
Second premolar? |
Mesial
Distal |
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30. . If the mandibular second premolar has three cusps which lingual cusp is larger?
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Mesiolingual cusp
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31. Which mandibular premolar has a greater lingual cusp tip from the proximal view?
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First
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32. How do the lingual and buccal cusps compare on the mandibular premolars from the proximal view?
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First - L is much shorter than B
Second - L is slightly shorter than B |
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33. How do the mesial marginal ridges compare on the mandibular premolars from the proximal view?
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First - parallel to buccal triangular cusp ridge
Second - higher and horizontal |
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34. How can one tell the right and left mandibular first premolar apart from the proximal view?
Three ways... |
1. Mesiolingual groove
2. More occlusal surface is visible 3. M marginal ridge is parallel to buccal triangular ridge |
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35. How can one tell the right and left mandibular second premolar apart proximal view?
Three ways... |
1. More occlusal surface is visible from the distal
2. Mesiolingual cusp is larger if has three cusps 3. D marginal ridge is lower than M |
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36. What is unquie about the mesial root depression of the maxillary first premolar?
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It extends onto mesial of crown
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37. How do the crown outlines of the mandibular premolars compare from the occlusal view?
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First -
1. Non symmetric outline 2. Converges toward lingual esp on mesial side Second - 1. Square outline 2. May be wider on lingual |
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38. Are there transverse ridges on both mandibular premolars?
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First has a definite transverse ridge
Second does not if it is 3-cusp type *Instead there is a "Y" groove pattern |
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39. How can one differentiate the left and right mandibular first premolar from the occlusal view?
Four things... |
1. More convex on distal
2. Mesiolingual corner is flat (chopped off) 3. ML groove is common 4. Distal fossae larger than mesial |
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40. How can one differentiate the left and right mandibular second premolar from the occlusal view?
Three things... |
1. Lingual cusp is centered or mesial (three cusp)
2. Lingual groove on 3-cusp with ML cusp 3. Distal fossa smallest on 3-cusp |
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41. What is the mesial concavity on the maxillary first premolar known as?
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Mesial marginal developmental groove
*Groove extends onto the root (mesial intraradicular groove) |
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42. What is the only tooth in the permanent dentition to have a longer mesial marginal ridge than distal?
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Maxillary first premolar
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