BOARD REVIEW > Tooth Morphology > Flashcards

Tooth Morphology Flashcards

(76 cards)

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1
Q

part of the tooth covered by enamel

A

anatomic crown

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2
Q

any part of the tooth that is clinically visible in the mouth

A

clinical crown

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3
Q

direction towards the crown of the tooth

A

coronal

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4
Q

part of the tooth that is covered in cementum

A

anatomic root

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5
Q

part of the root covered by the gingiva; not visible in the mouth

A

clinical root

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6
Q

tip or end of root

A

apex

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7
Q

area surrounding the root tip

A

periapex

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8
Q

direction towards the apex of the root

A

apical

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9
Q

hardest structure in the body

A

enamel

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10
Q

bite and cut food

A

inscisors

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11
Q

pierce or tear food

A

canines

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12
Q

assist molars in grinding food

A

premolars

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13
Q

grind food, assisted by premolars

A

molars

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14
Q

rounded elevation on the lingual surface at the cervical third of anterior teeth

A

cingulum

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15
Q

greatest bulge or convexity on the crown of the tooth

A

height of contour

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16
Q

maxillary trait only
found on the occlusal surface of maxillary molars

A

oblique ridge

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17
Q

narrow linear depression on the occlusal surfac

A

groove

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18
Q

despression on a tooth surface

A

fossa

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19
Q

most common for lingual pit carries, second most commonly congenitally missing tooth, peg laterals

A

maxillary lateral incisor

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20
Q

longest root in the mouth, second most commonly impacted tooth

A

maxillary canines

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21
Q

usually 2 roots, longer central groove, larger premolar

A

maxillary 1st premolar

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22
Q

shorter central groove with premolar

A

maxillary 2nd premolar

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23
Q

3 roots, cusp of carabelli, largest crown in dentition

A

maxillary 1st molar

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24
Q

what cusp is the cusp of carabelli on?

A

mesiolingual cusp

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25
3 roots, may have 3-4 cusps, 3 cusps=heart shape
maxillary 2nd molar
26
most common missing teeth
3rd molars
27
smallest and most symmetrical tooth, straight incisal edge
mandibular central incisor
28
incisal edge curves distally
mandibular lateral incisor
29
most likely to have a RARE bifurcated root
mandibular canine
30
only has 1 functional cusp
mandibular 1st premolar
31
2 functional cusps premolar
mandibular 2nd premolar
32
5 cusps, widest tooth mesiodistally, zig-zag occlusal groove
mandibular 1st molar
33
4 cusps, cross-shaped occlusal groove
mandibular 2nd molar
34
lack of one or more teeth in the primary or permanent dentition
hypodontia
35
congenital lack of ALL primary or permanent teeth
anodontia
36
extra teeth in the arch, often smaller
supernumerary teeth
37
most common supernumerary tooth, between the central incisors maxillary
mesiodens
38
one or more teeth in the dentition are smaller than normal
microdontia
39
one or more teeth are larger than normal
macrodontia
40
a single tooth germ attempts to divide, tooth count is normal
gemination
41
two tooth buds join, tooth count is missing 1
fusion
42
two adjacent teeth are united by cementum only by the root
concrescence
43
excessive cementum deposition on the roots of a tooth
hypercementosis
44
abnormal curve or angle in the root
dilaceration
45
teeth exhibit elongated, large pulp chambers, and short roots seen in down syndrom
taurodontism
46
enamel organ invaginates the crown of a tooth before mineralization
dens in dente (tooth in a tooth)
47
accessory enamel cusp found on the occlusal tooth surface
dens evaginatus
48
specific to dens evaginatus on anterior teeth
talon cusp
49
teeth are fused to bone, deciduous molars often affected
ankylosed teeth
50
wearing away of tooth structure by chemical means
erosion
51
wearing away of tooth structure by mechanical means ex. toothbrush
abrasion
52
occlusal stress causes flexure and microfracture at cervical areas
abfraction
53
wearing away of tooth structure from tooth-to-tooth contact
attrition
54
anatomic curvature forming a line similar to an upward smile line
curve of spee
55
anterior teeth incisal edges meet at occlusion
edge-to-edge
56
posterior teeth cusps meet at occlusion
end-to-end
57
MB cusp of the max 1st molar fits in the buccal groove of the mandibular 1st molar
class l occlusion
58
MB cusp of the max 1st molar is in front of the buccal groove of mand 1st upper incisors are protruted (out)
class ll, division l occlusion
59
MB cusp of the max 1st molar is in front of the buccal groove of mand 1st upper incisors are retruded (in)
class ll, division ll occlusion
60
MB cusp of the max 1st molar is behind the buccal groove of the mand 1st molar
class lll occlusion
61
tooth is tipped toward the tongue
linguoversion
62
tooth is tipped towards the cheek
buccoversion
63
tooth is tipped toward the lip
labioversion
64
tooth is rotated or twisted on its axis
torisversion
65
tooth is overerupted
supraversion
66
tooth is undererupted
infraversion
67
tooth has erupted into the wrong position
transversion
68
dentition with both primary and permanent teeth
mixed dentition
69
stain occurs during tooth development
endogenous stain
70
stain occurs after tooth development
exogenous stain
71
stain located within the tooth
intrinsic stain
72
stain is located on the surface of the tooth
extrinsic stain
73
use numbers 1-32 for permanent dentition and A-T for primary dentition
universal system
74
two-digit number for each tooth, quadrant is 1st number example: 11, 12, 13, 14
ISO or FDI system
75
teeth are designated with a right-angle symbol indicating the quadrants with the tooth number inside used in ortho
palmer system
76
which root of the maxillar 1st molar is the longest?
palatal root
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