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50 Cards in this Set
- Front
- Back
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On the max. pm's, which cusp is larger?
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facial
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Which max pm is larger?
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1st
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Which way is the palatal cusp of the max. pm's inclined?
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mesially
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Between what cusps are oblique ridges formed?
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DB and ML of max molars
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What is distinct about the mesial marginal ridge of the max 1st pm?
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has a groove and a concavity
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Which has a longer central groove? the maxillary second premolar or the maxillary first premolar
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Maxillary first premolar
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Which are more alike to each other? mand. or max. pm's?
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max.
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Which is more symmetric? max. 1st or 2nd pm's?
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2nd
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Which max. pm has cusps that are more similar in size?
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2nd
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On the max 2nd pm, is the crown wider f-L or m-d?
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f-L
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On the max. 2nd pm, which is longer, the distobuccal ridge or the mesial cusp ridge?
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distobuccal ridge
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On the max. 1st pm, which is longer, the distobuccal ridge or the mesial cusp ridge?
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mesial cusp ridge
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Which is the most vertically aligned of all teeth?
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All premolars
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Describe the outline of the occlusal surface of posterior teeth.
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the outline is made by their marginal ridges.
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Which is the smallest of all the pm's?
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mand. 1st
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Which direction is the mandibular first premolar’s occlusal surface inclined?
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lingually
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Which pm has a mesiolingual groove?
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mand. 1st
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Which pm has a nonfunctional lingual cusp?
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mand. 1st
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Which pm resembles a canine with regard to appearance and function?
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mand. 1st
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What are the occlusal groove schemes of the mand. 2nd pm from most common to least?
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Y, 3 cusps
H, 2 cusps U, 2 cusps |
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Does the mand. 2nd pm resemble the other pm's?
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from the buccal (facial ) only
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Where are the mental foramina in relation to dental structures?
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near the root apices of the mand. 2nd pm
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How many lobes make up the pm's?
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All premolars develop from 4 lobes except the mandibular second premolars which develops from 5
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The canines are the ______ of the arch.
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cornerstones
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Define canine eminence.
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The aveolar bone over canines bulges outward due to the shape of the roots.
Forms part of facial features. Very thin bone. |
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What is the longest permanent tooth?
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max. canine
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On which side is the crown of canines more convex? m or d?
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distal
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What CEJ (m or d) of the canines curves the most?
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mesial
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Which contour of the canine is more curved, ligual or labial?
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lingual
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Which dimension is longer on canines? F-L or M-D
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F-L
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What shape are canine crown from the facial?
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pentagonal
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On canines, which cusp ridge is longer?
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distal
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Differentiate between mesial and distal sides of max canines based on convexity.
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Mesial is broadly convex
Distal is more convex and bulges in the middle third. |
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What are the degree measurements of the max and mand canine tips?
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max. 105
mand. 120 |
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How many lobes make up canines?
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4
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Where is the mesial contact of the max. canine?
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junction of middle and incisal 1/3s.
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Where is the distal contact of the max. canine?
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middle 1/3
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Describe the root contour of the max. canines.
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bends distally in apical 1/3
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Describe the positioning of the cingulum of the max. canine.
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centered
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Which is longer faciolingually: max or mand. canines?
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max
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Describe the position of the cusp tips of the max. and mand. canines in relation to the midroot axis.
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max are labial
mand. are in line or lingual |
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Is there ever concavity on the proximal contours of the canines?
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yes, on the distal side in the apical 1/3
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Describe the prox. contours of the mand. canine looking facially.
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mesial is almost flat
distal is convex in insicial 2/3s |
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Describe the position of the crowns of the mand. canines in relation to the midroot axis.
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more crown distal to the midroot axis tha mesial
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Where are the proximal contacts of the mand. canines?
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mesial: incisal 1/3
distal: junction of incisal and middle 1/3s |
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Describe the root contour of the mand. canines.
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more often straight
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Compare the lingual sides of the mand. and max. canines.
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mand. is smoother
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Describe the position of the cingulum of the mand. canines.
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centered or distal
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Is there a way to tell the mesial surface of mand. canines from the proximal by looking at the root?
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yes, the distal depression is more distinct
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Which usually single-rooted tooth has the most tendency to bifurcate?
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mand. canines
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