Midterm One: 300 Dental Anatomy Facts Minus Molars Flashcards

1
Q

Primary teeth are (MORE OR LESS) mineralized than permanent teeth

A

Less

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2
Q

Difference in space from the primary to the permanent dentition is

A

2-4mm

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3
Q

Mamelons that remain beyond the age of 10 generally indicate an

A

open bite

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4
Q

Calcification of the primary roots is normally completed

A

3-4 years

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5
Q

The usual pattern of eruption for primary teeth is

A
Centrals
Laterals
1st Molars
Canines
2nd Molars
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6
Q

Front to back except _____; lowers before uppers except _____

A

canines, laterals

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7
Q

Primate space develops in the MX dentition between the

A

lateral and canine

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8
Q

Mandibular primary primate space is located between

A

Adult: canine and 1st premolar
Child: canine and 1st molar

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9
Q

Primary spacing for anterior teeth is most frequently caused by

A

growth of the dental arches

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10
Q

Direction of primary enamel rods in the cervical third is in _____ direction.

Permanent are in the _____ direction

A

occlusally

apically

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11
Q

Primary molars differ from permanent molars in that their roots are mo

A

divergent

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12
Q

Primary molar lacks an identifiable root

A

trunk

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13
Q

Primary mandibular central incisor has the smallest _______ crown dimension

A

Fa-Li

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14
Q

most bilaterally symmetrical tooth

A

Primary and permanent mandibular central incisor

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15
Q

In delayed resorption of primary incisors, the permanent incisors usually erupt ________

A

lingually “shark teeth”

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16
Q

Primary central incisor exhibits a prominent ______ ______ both on the facial and lingual surfaces

A

cervical ridge (buldge)

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17
Q

Primary canine longer incisal slope

A

mesio-incisal slope longer than disto-incisal

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18
Q

The cusp tip of the primary canine is generally off set to the

A

distal

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19
Q

MX first primary molar has a crown that somewhat resembles a

A

permanent premolar

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20
Q

MX 1st primary molar has roots that resembles a

A

permanent MX molar

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21
Q

Most prominent cervical ridge for primary MX teeth

A

on the MF surface of the 1st molar

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22
Q

Last primary teeth to erupt is the

A

MX 2nd molar

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23
Q

Which primary molar exhibits more cusps

A

primary 2nd molar (5)

vs. 3

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24
Q

Which primary tooth does not look like any permanent teeth

A

Primary 1st MN molar

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25
Q

Primary teeth that differ most from permanent teeth are the

A

MN 1st Molar

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26
Q

Incisors function

A

biting, tearing

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27
Q

tooth that has the greatest Fa-Li axial inclination

A

MX central

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28
Q

tooth with the greatest cervical curvature (on mesial) of any other tooth

A

MX central

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29
Q

CEJ dips deeper on MX central or lateral?

A

central

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30
Q

CEJ dips deeper on anterior or posterior?

A

anterior

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31
Q

CEJ dips deeper on MX or MD?

A

MX

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32
Q

CEJ dips deeper on mesial or distal?

A

mesial

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33
Q

GREATEST CEJ dip of all teeth

A

Mesial of the MX Central Incisor

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34
Q

Only anterior teeth that are wider mesio-distally than facio-lingually

A

MX Incisors

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35
Q

Greatest mesiodistal crown dimension of anterior tooth

A

MX Central Incisors

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36
Q

Tooth with identical measurements for incisol-cervical and mesio-distal

A

MX central

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37
Q

The contact between a MX central and lateral incisor makes embrasures - which is larger? Lingual or facial?

A

lingual embrasure larger than facial

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38
Q

which embrasure is smaller - the embrasure between the centrals or the embrasure between the central and lateral

A

between centrals

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39
Q

Tooth with most crown shape variation

A

MX lateral incisor

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40
Q

Which two teeth exhibit exhibits the most deviation in crown morphology

A

Third Molars

MX lateral incisors

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41
Q

Tooth most often is in abnormal relation and contact with adjacent teeth

A

MX lateral incisors

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42
Q

Two teeth most often congenitally missing

A

Third Molars

MX lateral incisors

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43
Q

non-molar tooth that most frequently has a mesial and distal pulp horn is the

A

MX central incisor

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44
Q

non-molar that is least likely to have a bifurcated root is the

A

MX central incisor

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45
Q
  1. The anterior tooth that most likely would demonstrate lingual pit caries is
A

MX lateral incisors

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46
Q

Tooth with a 54 has an anatomical feature, a DL groove that complicates root planning

A

MX lateral incisors

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47
Q

The disto-incisal angle of the _____ _______ has the greatest convexity of all MX anterior teeth

A

MX lateral

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48
Q

Teeth that generally have the most prominent marginal ridges of all anterior teeth

A

MX lateral incisors

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49
Q

Teeth that have the most distinct and deepest lingual fossa’s of all anterior teeth

A

MX lateral incisors

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50
Q

MX tooth that has the smallest mesio-distal crown width

A

MX lateral incisor

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51
Q

Tooth with mesio-distal measurement that is nearly identical to facio-lingual

A

MX lateral

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52
Q

Narrower mesio-distal width:

MX lateral incisor or MX central incisor

A

MX lat is narrower

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53
Q

Tooth that has distal contact that is farthest cervically of any incisor (usually very incisal)

A

MX lateral

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54
Q

Tooth that has distal contact centered both inciso-cervically and facio-lingually

A

MX lateral

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55
Q

Tooth root equal or larger than MX central

A

MX lateral

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56
Q

tooth distinguished by a greater cervical curvature on the mesial than distal

A

MN centrals

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57
Q

teeth that most frequently have concave areas on M & D root surfaces

A

MN centrals and laterals

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58
Q

smallest crown dimensions of any tooth

A

MN centrals

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59
Q

most symmetrical crown

A

MN centrals

60
Q

has sharpest set of incisal angles (mesial and distal)

A

MN centrals

61
Q

proximal contact at same level

A

MN centrals

62
Q

teeth that have proximal contacts at approximately the same levels on mesial and distal

A

MN centrals

63
Q

teeth that have contact points at the same inciso-cervical level

A

MN centrals

64
Q

two teeth that generally occlude with only one opposing tooth

A

MN central incisors and MX third molars

65
Q

The first succedaneous tooth to erupt in the mouth is the

A

permanent mandibular central incisor -

MN first molars arent considered succedaneous

66
Q

B and L embrasures may be same size

A

MN centrals

67
Q

incisor that tilts distally in relation to long axis (distolingual twist)

A

MN incisor

68
Q

which MN incisor mesio-distal width wider?

A

MN laterals

69
Q

tooth that has the greatest cervical prominence of any anterior tooth

A

MX canine

70
Q

tooth that from a proximal view tends to be positioned with the most nearly vertical axis

A

MX canine

71
Q

tooth that has the greatest overall total tooth length

A

MX canine

72
Q

tooth that has the longest root of any other tooth

A

MX canine

73
Q

tooth that has the greatest Fa-Li crown dimension of any anterior tooth

A

MX canine

74
Q

tooth whose distal contact is centered

A

MX canine

75
Q

the only tooth that has potential of contacting both anterior and posterior teeth

A

MX canine

76
Q

tooth whose cusp tip located facial to lingual axis

A

MX canine

77
Q

primary MX canine has cusp tip more towards the

A

distal

78
Q

permanent MX canine cusp tip more towards

A

mesial

79
Q

the middle facial lobe of the MX canine includes the cusp tip (opposite to MD canine)

A

-

80
Q

has a distal bulge (mesial and distal are asymmetric)

A

MX canine

81
Q

The crown form of _______ from a facial view is pentagonal

A

canines

82
Q

tooth that has straightest mesial alignment of crown to root

A

MN canine

83
Q

Mesial surface of the crown of the ____ _______ is almost parallel to the long axis

A

MN canine

84
Q

has longest crown dimension of any other tooth

A

MN canine

85
Q

which canine has the less prominent cingulum?

A

MN canine

86
Q

canine that is narrower mesio-distally

A

MN canine

87
Q

the anterior tooth that most frequently exhibits a bifurcated root

A

MN canine

88
Q

Bifurcation for MN canine roots when present creates a _____ and _____ root

A

facial and lingual

89
Q

has the longest root length of any MN tooth

A

MN canine

90
Q

in cross section the root of the MN canine is

A

irregularly oval

91
Q

cross section of the MN canine at the CEJ is

A

ovoid

92
Q

in cervical cross section the root of the MN canine is _______ in a _____ _______direction

A

flattened in a mesio-distal direction

93
Q

When compared to a MX canine the MN canine has contact areas located

A

more incisally

94
Q

has a continuous convex facial surface from incisal to apical end

A

MN canine

95
Q

makes a C shape from crown tip to root apex

A

MN canine

96
Q

has incisal edge lingual to long axis (opposite to MX canine)

A

MN canine

97
Q

has the most pronounced developmental Marginal groove of any MX tooth

A

MX 1st premolar

98
Q

has a mesial concavity that makes is difficult to adapt a matrix band

A

MX 1st premolar

99
Q

The cervical cross section of the MX 1st premolar exhibits a ______ ____ shaped root outline

A

kidney bean

100
Q

The cervical cross section of the MX 1st premolar exhibits a ______ ____ shaped pulp chamber floor

A

kidney bean

101
Q

The non-molar tooth that most frequently exhibits three roots is the

A

MX 1st premolar

102
Q

The facial cusp of the __ ____ ______ is offset to the distal

A

MX 1st premolar

103
Q

non molar tooth that has a longer mesio-facial cusp ridge than disto-facial cusp ridge

A

MX 1st premolar

104
Q

Only premolar with longer mesial cusp ridges (so does primary MX canine)

A

MX 1st premolar

105
Q

The premolar with the steepest cusp inclines

A

MX 1st premolar

106
Q

MX tooth with lingual cusps are off set to the mesial (but buccal cusp is offset to the distal)

A

MX 1st premolar

107
Q

is the posterior tooth that has the greatest cervico-occlusal crown height

A

MX 1st premolar

108
Q

The non-molar teeth having the sharpest demarcation between pulp chamber & canal

A

MX 1st premolar

109
Q

The size and position of the cusps are more identical for the ___ __ premolar than the _____

A

2nd MX premolar than the 1st

110
Q

has two cusps that are of equal height

A

MX 2nd premolar

111
Q

symmetrical posterior tooth (has to do with cusps)

A

MX 2nd premolar

2 cusps - one buccal one lingual

112
Q

Instead of a long central groove with few supplemental grooves, it has a short central groove with a lot of supplemental grooves that make it look wrinkly

A

MX 2nd premolar

113
Q

has fossa that are closest in size compared to any other posterior tooth

A

MX 2nd premolar

114
Q

has a uniquely prominent triangular ridge

a. Snake eyes
b. No central groove

A

MN 1st premolar

115
Q

has frequently both a separate mesial and distal pits (snake eyes)
a. Due to the triangular ridge

A

MN 1st premolar

116
Q

The mesio-lingual developmental groove on tooth #21 originates from

A

the occlusal pit

117
Q

The mesio-lingual developmental groove on tooth #21 extends onto the

A

proximal surface

118
Q

only tooth with a mesio-lingual groove

A

MN 1st premolar

119
Q

Mesiolingual developmental groove makes mesial marginal ridge run at a
(more of the occlusal surface can be seen from the mesial than distal

A

45 degree angle

120
Q

tooth that has the mesial marginal ridge located more cervical than the distal

A

MN 1st premolar

121
Q

The occlusal outline for the mandibular 1st premolar occlusal view is ____ _____

A

diamond shaped

122
Q

In the rare event of a second canal for a MN 1st premolar it is most likely located to the

A

lingual

123
Q

is the only premolar that frequently only has one pulp horn

A

MN 1st premolar

124
Q

The lingual cusp of the __ _____ ________ is approximately 2/3 of the height of the facial cusp

A

MN 1st premolar

125
Q

The lingual cusp of a __ _____ ________ is similar in development to the cingulum of a canine

A

MN 1st premolar

126
Q

The lingual cusp of the __ _____ ________ in normal occlusion does not occlude

A

MN 1st premolar

127
Q

most variation of all posterior teeth in facial versus lingual cusp height

A

MN 1st premolar

128
Q
  1. The facial masticatory mucosa (attached gingival) is narrowest on the facial aspects of ___ _____
A

MN premolars

129
Q

FL’lly smallest of any posterior tooth

A

MN 1st premolar

130
Q

closest of all MN teeth in FL versus MD diameter

A

MN 1st premolar

131
Q

Viewed from the occlusal the basic coronal outline of a MN second premolar is

A

pentagonal

132
Q

Occlusal table of MN second premolar

A

rectangle

133
Q

Premolar that is most likely to have a crescent-shaped central developmental groove is

A

MN 2nd premolar

134
Q

Shortest interdental papilla is between the

A

MN 2nd premolar and 1st molar

135
Q

The Y type MN 2nd premolar has ___ facial and ___ lingual cusps

A

one facial and two lingual cusps

136
Q

The Y type MN 2nd premolar has the same number of occlusal pits as the MN ___ _____

A

1st molar

137
Q

only premolar with multiple lingual cusps

A

MN 2nd premolar

138
Q

only premolar with a lingual groove

A

MN 2nd premolar

139
Q

only premolar with a central fossa

A

MN 2nd premolar

140
Q

The premolar that most frequently has a single central pit is the

A

MN 2nd premolar

141
Q

Most congenitally missing premolar

A

MN 2nd premolar

142
Q

Longest tooth –>
Longest root –>
Longest crown –>

A

Mx canine
Mx canine
Mn canine

143
Q

Longest root –>

Longest mandibular root –>

A

Mx Canine

Mn Canine

144
Q

The PRIMARY canine cusp tip is set off towards the

A

Distal

Gives the longer mesioincisal edge

145
Q

What is the order for PERMANENT maxillary teeth cusp ridge lengths starting with the mesial Canine and ending with the distal of second premolar?

A

Short -> Long -> Long -> Short -> Short-> Long

146
Q

The mandibular canine is ______ mesiodistally than the maxillary canine

A

SMALLER

  • Distal bulge on Maxillary canine (fatter)
  • Straight mesial on Mandibular canine (skinnier)
147
Q

PNEUMONIC for maxillary anterior Contacts

IJ
JM
JM

A

I Just
Jacked Micheal
Jackson’s Moped

I- incisal 1/3
J - junctional (between incisal 1/3 and middle 1/3)
M - middle 1/3