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21 Cards in this Set
- Front
- Back
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Mandibular first premolar:
# roots and cusps |
1 root, 2 cusps
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Mandibular first premolar:
Distinguishing traits |
Prominent transverse ridge, lingually inclined occlusal table (only posterior tooth with this trait)
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Mandibular first premolar:
Symmetry |
Very asymmetric in mesial/distal profiles with prominent mesial bulge
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Mandibular first premolar:
Groove |
Mesiolingual groove
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Mandibular first premolar:
Profile of tooth from occlusal point |
Diamond shaped, "snake eyes"
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Mandibular first premolar:
Contact area |
Center of middle 1/3 of tooth
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Mandibular first premolar:
What tooth does this resemble? Why? |
Canine - buccal cusp much larger than lingual cusp (lingual resembles cingulum). Mesial marginal ridge like canine, distal is more distinct.
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Mandibular first premolar:
Cusp tip relative to root |
In line
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Mandibular first premolar:
# of lobes |
4
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Mandibular first premolar:
Crown length |
8.5
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Mandibular first premolar:
Mesiodistal |
7
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Mandibular first premolar:
Buccolingual |
7.5
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Mandibular first premolar:
Facial contour height |
Cervical third
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Mandibular first premolar:
Lingual contour height |
Middle third
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Mandibular first premolar:
Root length |
14
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Mandibular first premolar:
Pulp canal |
1
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Mandibular first premolar:
Pulp horn |
1
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Mandibular first premolar:
Eruption age |
10-12
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Mandibular first premolar:
Root completed |
12-13
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How is the mandibular first premolar similar to a canine?
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1) About same buccolingual measurement
2) Lingually sloped occlusal surface |
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Mandibular first premolar:
Buccal cusp |
Tip is pointed and located slightly mesial to center of the crown
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