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26 Cards in this Set
- Front
- Back
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Which tooth is most likely to be unnecessarily endodontically treated by a novice dentist who sees a radiolucency on the radiograph?
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Mandibular second premolar
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What is sometimes misdiagnosed as a premolar abscess?
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The mental foramen
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Why must you take came to avoid over filling an endodontic treatment on a mandibular second molar?
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may impinge on the mental foramen
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What are the three types of occlusal patterns that are seen in mand. second premolars?
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(Y) = 5 lobes, 3 cusps
(H) = 4 lobes, 2 cusps (U) = 4 lobes, 2 cusps, cental developmental groove appears crescent shaped |
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What is the most common type of mand. second premolar?
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Y
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Which tooth has a mesial marginal ridge that is distinctly shorter in length and less prominent in height than the distal marginal ridge?
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Mand. first premolar
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Where are the contacts of the mand. first premolar?
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On the mesial or distal triangular fossae, slightly mesial or distal to the marginal ridges
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The mandibular first premolar has a small, non-functioning _____ cusp.
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Lingual
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What does the masticatory function of the mandibular first premolar most resemble?
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mand. canine
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What are the four distinguishing characteristics of the Mand. premolars when compared to Max. premolars?
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1. Proximally tilt lingually
2. Proximally outline is rhomboidal 3. Lingual cusps are smaller than buccal cusps 4. Occlusally crown is square |
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What is the proximal view of max. premolars?
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Trapezoidal
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What is the occlusal shape of max. premolars?
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Rectangular
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What is an important characteristic of mand. first premolars?
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Occlusally the buccal lobe makes up the majority of the tooth.
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One of the primary sections of formation in the development of the crown of the tooth. Cusp on post. teeth and mamelons and cingula on ant. teeth.
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Lobes
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What are the important root/pulp characteristics of the first Max. premolar?
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1. Both root and pulp are kidney shaped
2. Only premolar with 2 roots and 2 canals 3. Buccal root/canal largest |
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Premolars are most _____ to do root canal treatments on because they are easy to perforate.
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Difficult
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Max. premolar roots occasionally penetrate the _____.
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Antrum
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How do you distinguish if a Max. first premolar is Rt./Lt.
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There is a more pronounced mesial developmental groove.
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Which premolar is the only one to have a mesial buccal cusp ridge that is longer thanits distal buccal cusp ridge?
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Max. first premolar
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What 2 teeth have pronounced cervical concavities on the surface of the crown?
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Max. first premolar - mesial
Max. first molar - distal |
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What are the largest premolars?
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Max. first premolars
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What are the smallest premolars?
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Mand. first premolars
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What are the most closely vertically aligned of all teeth?
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Max. and Mand. premolars
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Where does a lingual cusp of a Max. second premolar pass through in a laterotrusive movement?
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Through the facial embrasure between the second premolar and the first molar.
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What is found on the mand. first premolar and is not present on either max. premolars?
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Mesio-lingual developmental groove
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What characteristics does the max. second premolar have compared to the max. first premolar?
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One root - first has 2
More symmetrical and less angular DBCR is longer than MBCR Buccal/Lingual cusps are almost equal in height Less prominent buccal ridge Shorter central groove with minimal supplemental gooves |
