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Dental Anatomy/Occlusion Lab > Lecture 1 Dental Anatomy > Flashcards

Lecture 1 Dental Anatomy Flashcards

1
Q

what is the foundation of good dentistry?

A

dental anatomy and occlusion

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2
Q

primary (deciduous) dentition in utero

A

16 weeks

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3
Q

primary (deciduous) dentition first appearance

A

6 months

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4
Q

primary (deciduous) dentition last appearance

A

24 months

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5
Q

primary (deciduous) dentition complete

A

3 years

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6
Q

lower central incisor: what age erupt? shed?

A

6-10 mo<br></br>6-7 yrs

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7
Q

lower lateral incisor: what age erupt? shed?

A

10-16 mo<br></br>7-8 yrs

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8
Q

lower canine (cuspid): what age erupt? shed?

A

17-23 mo<br></br>9-12 yrs

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9
Q

lower first molar: what age erupt? shed?

A

14-18 mo<br></br>9-11 yrs

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10
Q

lower second molar: what age erupt? shed?

A

23-31 mo<br></br>10-12 yrs

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11
Q

upper central incisor: what age erupt? shed?

A

8-12 mo<br></br>6-7 yrs

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12
Q

upper lateral incisor: what age erupt? shed?

A

9-13 mo<br></br>7-8 yrs

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13
Q

upper canine (cuspid): what age erupt? shed?

A

16-22 mo<br></br>10-12 yrs

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14
Q

upper first molar: what age erupt? shed?

A

13-19 mo<br></br>9-11 yrs

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15
Q

upper second molar: what age erupt? shed?

A

25-33 mo<br></br>10-12 yrs

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16
Q

how long does mixed dentition last?

A

6 years (ages 6-12)

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17
Q

which teeth are normally the indicators of mixed dentition?

A

mandibular molars or centrals

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18
Q

what teeth replace exfoliated deciduous teeth?

A

succedaneous

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19
Q

what primary teeth are replaced by permanent molars?

A

none

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20
Q

are all permanent teeth succedaneous?

A

no, perm molars do not succeed any primary teeth

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21
Q

what is the formula for mammalian teeth?

A

primary: 2[I
2/2 C 1/1 M 2/2 ]=20<br></br>permanent: 2[I 2/2 C 1/1 P 2/2 M 3/3] = 32

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22
Q

what are the 4 types of tooth numbering systems?

A

palmer<br></br>viktor harderup<br></br>FDI (Federation Dentaire
Internationale)<br></br>universal system

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23
Q

palmer numbering

A

<img></img><br></br><img></img><br></br>

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24
Q

FDI numbering

A

<img></img><br></br><img></img><br></br>reads as 1 of 1; 2 of 1; etc.

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25
Q

universal notation (deciduous)

A

<img></img><br></br>A-J for maxillary<br></br>K-T for mandibular

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26
Q

universal notation (permanent)

A

<img></img><br></br><span>1-16</span> for
maxillary<br></br><span>17-32</span> for
Mandibular

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27
Q

crown and root anatomy

A

<img></img>

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28
Q

Anatomical crown

A

<div>CEJ to incisal edge</div>

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29
Q

Clinical crown

A

from the gum to incisal

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30
Q

what are the four tooth tissues? and type of tissue?

A

enamel- hard tissue<br></br>dentin- hard tissue<br></br>cementum- hard tissue<br></br>pulp- soft tissue

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31
Q

what is the top arch called?

A

maxillary

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32
Q

what is the bottom arch called?

A

mandibular

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33
Q

what are the surfaces of the teeth? (image)

A

<img></img>

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34
Q

cusp

A

elevation or mound on the crown

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35
Q

tubercle

A

small elevation on some portion of the crown (deviation from typical form)

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36
Q

cingulum

A

a lingual lobe of an anterior tooth

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37
Q

ridge

A

a linear elevation on the surface of the tooth

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38
Q

marginal ridge

A

rounded borders of the enamel that form the MD margins on the occlusal surfaces of the premolars and molars // MD margins of the lingual surfaces of the incisors and canines

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39
Q

triangular ridges

A

descend from the tips of the cusps of molars and premolars toward the central part of the occlusal surfaces

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40
Q

transverse ridge

A

when the buccal and lingual triangualr ridge join

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41
Q

oblique ridge

A

a ridge crossing obliquely the occlusal surface of max molars (union of DB cusp and ML cusp)

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42
Q

fossa

A

an irregualr depression or concavity

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43
Q

lingual fossa

A

on lingual surfaces of incisors

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44
Q

central fossa

A

on occlusal surfaces of molars

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45
Q

triangular fossa

A

found on premolars and molar surfaces mesial and distal to marginal ridges

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46
Q

sulcus

A

long depression or valley in surface of a tooth btw ridges and cusps (developmental groove at the junction of inclines)

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47
Q

developmental groove

A

shallow groove or line between the primary parts of the crown or root

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48
Q

supplemental groove

A

less distinct, shallow linear depression on the surface of a tooth and does not mark the junction of primary parts

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49
Q

buccal and lingual grooves

A

developmental grooves found on the buccal and lingual surfaces of posterior teeth

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50
Q

pits

A

small pinpoint depressions located at the junction of developmental grooves or at terminals of the grooves

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51
Q

lobe

A

one of the primary secrions of function in the development of the crown. cusps and mamelons are examples

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52
Q

mamelons

A

any one of the three rounded protuberances found on the incisal ridges of newly eruptes incisor teeth

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53
Q

identify ridges on the occlusal

A

<img></img>

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54
Q

what are cusps on canines, premolarsm and molars used for?

A

cutting and holding

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55
Q

what do incisors have to be able to cut?

A

ridge or edge

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56
Q

example of ridges on the occlusal

A

<img></img>

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57
Q

how many roots do incisors, canines, and some premolars have?

A

single

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58
Q

how many roots/type of root do premolars and molars have?

A

two roots with a bifurcation

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59
Q

how many roots do maxillary molars have?

A

three roots with trifurcation

60
Q

how are roots held in the jaw?

A

alveolar process

61
Q

what is the bone of the socket called?

A

alveolus

62
Q

what are the thirds that the root is divided into? from top to bottom

A

apical, middle, cervical

63
Q

what thirds are the crown (labial/lingual view) divided into? horizontally? vertically?

A

cervical, middle, incisal; distal, middle, mesial

64
Q

what thirds are the crown (mesial/distal view) divided into? horizontally? vertically?

A

labial (buccal), middle, lingual

65
Q

what are the 6 anterior line angels?

A

<div>1.Mesiolabial</div>

<div>2.Distolabial </div>

<div>3.Mesiolingual</div>

<div>4.Distolingual</div>

<div>5.Labioincisal</div>

<div>6.Linguoincisal</div>

66
Q

what are the 8 posterior line angles?

A

<div>1.Mesiobuccal</div>

<div>2.Distobuccal</div>

<div>3.Mesiolingual</div>

<div>4.Distolingual</div>

<div>5.Mesio-occlusal</div>

<div>6.Disto-occlusal</div>

<div>7.Bucco-occlusal</div>

<div>8.Linguo-occlusal</div>

67
Q

what are the 4 point junctions of the anterior teeth?

A

<div>1.Mesiolabioinscisal</div>

<div>2.Distolabioincisal</div>

<div>3.Mesiolinguoincisal</div>

<div>4.Distolinguoincisal</div>

68
Q

what are the 4 point junctions of the posterior teeth?

A

<div>1.Mesiobucco-occlusal</div>

<div>2.Distobucco-occlusal</div>

<div>3.Mesiolinguo-occlusal</div>

<div>4.Distolinguo-occlusal</div>

69
Q

what surfaces preceed all others when naming/labeling?

A

mesial/distal

70
Q

what terms occur last in any combination of naming/labeling?

A

incisal/occlusal

71
Q

alveolar bone

A

the bones of the max and mand that surrounds and supports teeth

72
Q

alveolus

A

the bony lining of the socket that holds the roots of the tooth and a portion of the max and mand process

73
Q

anterior

A

along or toward the front of the dental arch

74
Q

apical foramen

A

the main opening at the apex of a root for entry and exit of pulp tissue

75
Q

arch

A

arrangement of the teeth in the form of a curve

76
Q

biological width

A

the area (2.04 mm) between the base and the gingival sulcul and alveolar crest

77
Q

buccal

A

toward the cheek; surface of posterior teeth in contact with cheek

78
Q

cementoenamel junction (CEJ)

A

the junction of the cementum and the enamel (cervical line running along cervix of tooth)

79
Q

cementodentinal junction (CDJ)

A

the junction of the cementum and the dentin

80
Q

cementum

A

hard tissue forming the outer covering of the root of a tooth and surrounding the dentin along the root portion of the tooth

81
Q

crown

A

portion of the tooth from the CEJ<span>to the </span><span>incisal</span><span>/occlusal surface that is covered by enamel</span>

82
Q

dentin

A

portion of the tooth underlying the enamel and cementum and surrounding the pulp cavity (bulk of tooth)

83
Q

dentinoenamel juntion (DEJ)

A

the junction of the dentin and the enamel

84
Q

distal

A

away from the midline of the arch

85
Q

enamel

A

hard, mineralized tissue forming the outer covering of the anatomical crown of a tooth and surrounding the dentin in the crown portion of a tooth

86
Q

facial

A

<div><span>´</span><span>relating to or
involving the face; an inclusive term for the labial and buccal surfaces, both
surfaces being in direct contact with areas of the face</span></div>

87
Q

gingiva

A

part of the perio that consists of mucosal tissue and surrounds a tooth at the cervix and extends to cover the max and mand alveolar processes

88
Q

incisal

A

pertaning to the cutting or tearing surface of anterior teeth

89
Q

labial

A

toward lips

90
Q

lingual

A

toward the tongue

91
Q

mandibular

A

<span>relating to the mandible or lower jaw</span>

92
Q

mesial

A

<div><span>to</span><span>ward the
midline of the arch. The surface of anterior and posterior teeth facing toward
the midline</span></div>

93
Q

maxillary

A

<div><span>relating to
the maxilla or upper jaw</span></div>

94
Q

midline

A

<span>imaginary line dividing a body into left and right; an
imaginary line dividing the maxillary and mandibular arches into maxillary and
mandibular left and right </span><span>quadrants</span>

95
Q

occlusal

A

pertaining to the grinding, crushing, and chewing surface of posterior teeth,

96
Q

perikymata

A

parallel ridges formed by cyclic deposition of enamel

97
Q

periodontal membrane (ligament)

A

<span>complex of
collagenous fiber bundles that surrounds the root(s) of a tooth and connects
the cementum with the alveolar bone</span>

98
Q

periodontium

A

<span>an inclusive term for the supporting and investing
structures of a tooth. The main structures are gingiva, alveolar bone,
cementum, and periodontal ligament</span>

99
Q

posterior

A

along or toward the back or rear of dental arch

100
Q

pulp

A

<span>innervated connective tissue possessing the formative,
nutritive, sensory, and defensive functions essential to the nourishment and
vitality of a tooth</span>

101
Q

pulp cavity

A

space or void housing entire dental pulp

102
Q

pulp chamber

A

portion of pulp cavity that is housed in coronal section of tooth

103
Q

pulp canal

A

<div><span>portion
of the pulp cavity that extends from the pulp chamber to the apex of the root
of a tooth</span></div>

104
Q

quadrant

A

<span>half of the maxillary or mandibular arch, when divided
by the midline</span>

105
Q

root

A

<span>portion of a tooth covered by cementum and embedded in
a bony socket called alveolus</span>

106
Q

root apex

A

<span>end or furthest point of the root of a tooth</span>

107
Q

vestibule

A

<span>the portion of the oral cavity bounded on one side by
the teeth, gingiva, and alveolar ridge; and on the lateral side by the lips and
cheeks. Referred to as </span><span>buccal, labial</span><span>, and/or </span><span>facial vestibule</span>

108
Q

which numbers belong to the maxillary incisors?

A

7,8,9,10

109
Q

what are the maxillary incisors function?

A

cut or bite food

110
Q

do max incisors have cusps?

A

no they have edges or ridges <br></br><b>ridges</b> makes up the enitre incisal part<br></br><b>edges</b> do not exist until wear has occured

111
Q

maxillary central charactersitics

A

-widest of anterior teeth<br></br>-labial surface is less convex with rectangle/square appearance<br></br>-M angle sharper, D more rounded<br></br>-fairly flat in mid/incisal third<br></br>-may have mamelons

112
Q

mamelon

A

one of three protuberances on the cutting edge of a recently erupted tooth<br></br>-thin enamel that normally chips, breaks, or wears overtime

113
Q

what is the average length of the max central crown?

A

10-11mm from height of contour on cervix to incisal edge

114
Q

how wide is max central from contact to contact?

A

8-9mm

115
Q

which teeth are wider mesiodistally than labiolingually?

A

max centrals

116
Q

the ____ linge angle of the max central is sharp

A

mesioincisal

117
Q

the ____ line angle of the max central is more rounded and convex

A

distoincisal; crest of curvature toward cervical line

118
Q

where are the M and D contacts for the max central?

A

m: incisal 1/3<br></br>d: junction of incisal and middle 1/3

119
Q

the labial surface of the max central is relatively ___ with convexity near ____

A

flat; cervical 1/3

120
Q

what is the total length of the max central

A

22-23mm

121
Q

where is the cingulum located on the max central?

A

below the cervical line slightly distal

122
Q

anatomy of the lingual portion of the max central

A

<img></img>

123
Q

where are the crests of curvature in the mesial view of the max central?

A

just below the cervical line

124
Q

which side is the curvature of the cervical line greater? M or D?

A

M

125
Q

which tooth is the cervical line curvature most pronounced?

A

max central

126
Q

which side M or D will you see more of the labial of the max central?

A

D because of slight curvature

127
Q

what does curvature to the D side function for?

A

the formation of the dental arch

128
Q

how is the cervical portion of the incisal view seen for the max central?

A

as a broad convexity<br></br><img></img>

129
Q

max central root features

A

cone shaped, blunt apex, 2-3mm longer than crown

130
Q

max central pulp anatomy

A

labiolingual: narrow incisal- wide cervical- taper to apex<br></br>mesiodistal: wide incisal & taper to apex<br></br>*depends on view

131
Q

maxiallry lateral features

A

varies greatly<br></br>can be peg shaped or missing<br></br>can have palato-radicular groove (distolingual)<br></br>can have large pointed tubercle

132
Q

max lateral has more ___ and a ___ incisal ridge

A

curvature, rounded

133
Q

where is the mesial crest of contour in the max lateral

A

junction of middle and incisal thirds

134
Q

is M or D more rounded on the max lateral?

A

D

135
Q

where is the crest of contour on the dital for the max lateral?

A

center of the middle third

136
Q

what is the width of the max lateral mesiodistally?

A

6-8mm

137
Q

how long is the root of the max lateral and which way does it curve

A

1.5x the crown; distally

138
Q

lingual features of the max lateral

A

MD ridges marked<br></br>cingulum prominent with developmental grooves<br></br>linguoincisal ridge well developed<br></br>lingual fossa more concave

139
Q

where is the developmental groove of the max lateral

A

side of the cingulum mostly distal

140
Q

mesial view features of max lateral

A

resembles small central

141
Q

why does the max lateral seem thicker than the central?

A

heavy development of incisal ridge

142
Q

which side does the max lateral seem thicker?

A

distal view

143
Q

which side is the cervical line curve greater on the max lateral?

A

mesial

144
Q

what is unique about the distal side of the max lateral?

A

may have developmental groove on crown going onto root

145
Q

from the incisal view of the max lateral the labiolingual dimension may be ___ than the mesiodistal

A

greater

146
Q

max lateral root feature

A

more slender than central<br></br>tapers to apex with distal bend in apical 1/3<br></br>cross section at cervical is ovoid

147
Q

max lateral pulp anatomy

A

small diameter and ovoid

Dental Anatomy/Occlusion Lab (5 decks)

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