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Dent Anat > Unit 5-occlusal and root > Flashcards

Unit 5-occlusal and root Flashcards

1
Q

general shape of occlusal on max premolars

A

hexagonal

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2
Q

lingual margin from occlusal

A

convex

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3
Q

mesial and distal margins from occlusal

A

straight, converge towards lingual

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4
Q

mesial marginal groove on occlusal?

A

prominent

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5
Q

Occlusal table

A

bordered by proximal margins and the cusps

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6
Q

buccal cusp from occlusal

A

offset distally, wider and higher cusp; has 4 cusp ridges

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7
Q

lingual cusp ridge

A

also called buccal triangular/Buccal portion of transverse ridge; runs from buccal to central groove

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8
Q

4 ridges of occlusal surface

A

buccal cusp ridge (cr), lingual cr (triangle one), mesial cr, and distal cr

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9
Q

inclined planes of occlusal buccal

A

4 of them
m/d buccal NONFUNCTIONAL
m/d Lingual FUNCTIONAL

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10
Q

shortest cusp in max premolars

A

lingual of max 1st

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11
Q

lingual cusp of max premolars (orientation, cusps, planes, shape)

A

offset mesially, shorter, rounder w/ 4 cusp ridges and 4 inclined planes (3 functional)

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12
Q

number of functional incline ridges in lingual cusp

A

3! only the mesiolingual is non functional

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13
Q

more rounded/less hexagonal

A

occlusal of max 2nd bicuspid

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14
Q

shorter central groove

A

occlusal of max 2nd bicuspid

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15
Q

4 functional inclined planes

A

max 2nd lingual cusp on occlusal

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16
Q

less deep fossae

A

distal

17
Q

fossae bordered by

A

transverse ridge and either m or d of both cusps

18
Q

union of 4 grooves

A

mesial pit

19
Q

union of 3 grooves

A

distal pit

20
Q

root of max 1st

A

can have 3- 2 buccal and 1 lingual; deflection common; 2 root branches

21
Q

2 root branches

A

only max 1st bicuspid

22
Q

Type 1

A

single, straight, blunt apex; wider b-l; MESIAL CONCAVITY CONTINOUS

23
Q

Type II

A

bifurcated; buccal larger but equal in lengths; SHARP apices

24
Q

sharp apices

A

type II

25
Q

blunt apices

A

type I

Dent Anat (7 decks)

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