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43 Cards in this Set
- Front
- Back
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How many cusp
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two (buccal and lingual usually)
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How many roots
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one if two (buccal or lingual)
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what is the numbering
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5 and 12
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replace which deciduous teeth
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1st molar
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Initiation of calcification
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1.5 - 1.75
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completion of enamel
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5-6
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Eruption
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10 - 11
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Completion of Root
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12 - 13
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What geometric shape from the buccal
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pentagonal
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Is the first premolar larger or smaller than the second premolar
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larger
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Do they have two branch root
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Yes, only premolar
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which direction is the buccal CEJ convex towards
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apex
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buccal tip offset in which direction
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distal
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Which buccal slope is longer and straighter
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mesial. distal shorter and curved
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Height of contour on the buccal surface is where
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cervical third
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crown tapers in which direction
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lingual
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how many depression from the buccal view
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two (mesiobuccal and distobuccal) and facial ridge - three buccal lobe.
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geometric shape from the mesial aspect
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trapezoidal
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buccal distal outline convex or concave
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cervical concave
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buccal distal outline longer or shorter
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shorter
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buccal mesial outline convex or concave
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concave
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lingual cusp tip is offset in which direction
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mesial
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lingual aspect is generally
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smaller, no defined ridge, shorter, narrower, cusp more round
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lingual height of contour
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middle third
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mesial contact
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middle and occlusal third, roughly cicular, offset to the buccal
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Mesial aspect the mesial marginal ridge is apparent also
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marginal groove
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What is the distinguishing characteristic of 1st premolar
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mesial concavity middle portion of the cervical thirds.
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distal contact area
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larger than mesial . slightly more cervical, but at the occlusal and middle third, ovoid
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distal marginal ridge is longer or shorter than mesial
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shorter
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is more of the occlusal table visible from the distal or mesial aspect
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distal
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buccal cusp has how many cusp ridges
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four
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which side of the buccal cusp is functional and what are the inclined plane corresponding
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lingual side; mesiolingual and distolingual plane
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which cusp is functional
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lingual
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of the lingual cusp which are functional and which aren't
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mesiolingual is not functional. rest of the three are.
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Transverse ridge is located where
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buccal and lingual cusp meet.
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geometric shape of occlusal table
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hexagonal
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occlusal aspect has a convergence line towards
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lingual
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how many pits
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2 mesial and distal
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six groove
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central, mesiomarginal, mesiofacial, mesiolingual, distalfacial, distal lingual
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1st or 2nd premolars have more secondary grooves
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2nd premolar
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three types of roots
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Type I - single root; Type II - bifucated root (buccal and lingual), type III laminated root
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which root type is most common
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bifucated
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what notch appears in the mesial marginal ridge
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mesial marginal groove
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