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NBDE Review > Dental Anatomy Compendium > Flashcards

Dental Anatomy Compendium Flashcards

1
Q

What is the formula for the primary dentition per maxillary/mandibular quadrant?

A

i 2/2

c 1/1

m 2/2

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2
Q

What is the formula for the permanent dentition per maxillary/mandibular quadrant?

A

i 2/2

c 1/1

p 2/2

m 3/3

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3
Q

What in the Contact area of Maxillary Lateral incisors (M and D)?

A

M - Junction of incisal & middle 1/3

D - Middle 1/3

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4
Q

Contact area of Maxillary canine (M and D)

A

M - Junction of incisal & middle 1/3

D - Middle 1/3

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5
Q

Contact area of MANDIBULAR central incisors and lateral incisors (M and D)

A

M - Incisal 1/3

D - Incisal 1/3

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6
Q

What in the Contact area of Maxillary Central incisors (M and D)?

A

M - Incisal 1/3

D - Junctional of Incisal & Middle 1/3

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7
Q

Contact area of mand canine (M and D)?

A

M - Incisal 1/3

D - Middle 1/3

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8
Q

What are the letters for the contact areas for the Maxillary and Mandibular anterior teeth (incisocervically) ?

A

Maxillary: IJ JM JM

Mandibular: II II IM

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9
Q

GENERALLY, where is the occlusocervical contact area on posterior teeth? and what are the 2 exceptions?

A

Middle 1/3 of crown (M contact more occlusally) (contact area = ovoid, slightly wider F/L)

Exception :

  1. Mand 1st premolar M contact which is more cervical due to sloped MMR
  2. Max and mand molars M contacts are at junction of occl and middle 1/3
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10
Q

GENERALLY, where is the faciolingual proximal contact area located?

A
  • ALL teeth have contact areas on Middle 1/3 (posterior teeth slightly more facial).
  • Posterior teeth tend to have theirs slightly more facial
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11
Q

All teeth generally have facial heights of contour at the _________ of the crown although Mandibular Molars are more @ junction of _________ & __________

A

-Cervical 1/3

  • Cervical
  • Middle 1/3
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12
Q

Facial heights of contour are also termed _________ and extend in a _______________ direction parallel to the _______________

A
  • Cervical ridges
  • Mesiodistal
  • Cervical line (CEJ)
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13
Q

Facial heights of contour are most prominent on ____________ .

They are least prominent on _____________.

A
  • Mandibular posterior teeth

- Mandibular anterior teeth

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14
Q

Anterior teeth have lingual heights of contour at the _________ of crown. Also termed _____________

A
  • Cervical 1/3

- Cervical ridges

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15
Q

Posterior teeth have lingual heights of contour at the ________ of the crown. What is the exception to this?

A
  • Middle 1/3
  • Exception: Mand 2nd PREMOLAR - lingual ht. of contour is occlusal 1/3 (due to diminished lingual crown height & cusp size)
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16
Q

CEJ is also known as what?

A

Cervical line

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17
Q

The CEJ dips ___________ on the proximal surfaces of teeth

A

incisally/occlusally

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18
Q

The CEJ dips more so on the ________ teeth than the _______ teeth.

A
  • Anterior

- Posterior

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19
Q

The CEJ dips more on the __________ ____________ surface than on the __________

A
  • Mesial proximal

- Distal

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20
Q

The CEJ dips more so on __________ teeth than on ________ teeth

A
  • Maxillary

- Mandibular

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21
Q

On which tooth and surface would the most SEVERE CURVATURE be found on?

A

The mesial surface of the MAXILLARY CENTRAL INCISOR

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22
Q

On which tooth and surface would the LEAST CURVATURE be found on?

A

Distal surface of the MANDIBULAR 3rd MOLAR

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23
Q

What can be found around every tooth contact area: occlusal (incisal), lingual, gingival, and facial?

A

4 V-shaped (embrasures)

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24
Q

Lingual embrasures are _________ than facial embrasures on all permanent teeth because of _____________.

  • (Generally teeth are _________ facially than they are lingually)
  • Exceptions?
A
  • Wider
  • Faciolingual convergence

–wider

Exceptions:

  • 1) Max 1st MOLAR
    2) 3-cusp variety mandibular 2nd PREMOLAR b/c lingual calibration on these 2 teeth is greater than it is on facial
    3) Mandibular Central Incisors–facial & lingual embrasures are same size
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25
Q

Top 5 largest incisal embrasures

A
  1. Max lateral incisors and canine (LARGEST)
  2. Mand lateral incisors and canine
  3. Max central and lateral incisors
  4. Max central incisors
  5. Mand central and lateral incisors
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26
Q

What is the smallest incisal embrasure?

A

Between the Mandibular central incisors (SMALLEST)

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27
Q

What is the LARGEST occlusal embrasure?

A

Between Maxillary CANINE and 1st PREMOLAR

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28
Q

When do primary teeth show first evidence of calcification in utero ?

A

2nd trimester (~14 weeks)

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29
Q

Which primary teeth complete calcification by 11 months ?

A

Maxillary 2nd Molars

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30
Q

Primary mandibular teeth usually erupt before ___________ counterparts?

A

-Maxillary

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31
Q

Which primary teeth are the first to erupt? In how many months?

A
  • Mandibular CENTRAL incisors

- 8-10 months

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32
Q

Which primary teeth are last to erupt? In how many months?

A
  • Maxillary 2nd Molars

- 29 months

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33
Q

All primary roots have completed formation by?

A

39 months (maxillary canines)

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34
Q

Which primary maxillary tooth erupts at 10 months?

A

Central incisor (E, F)

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35
Q

Which primary maxillary tooth erupts at 11 months?

A

Lateral incisor (D, G)

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36
Q

Which primary maxillary tooth erupts at 19 months?

A

Canine (C, H)

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37
Q

Which primary maxillary tooth erupts at 16 months?

A

1st molar (B, I)

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38
Q

Which primary maxillary tooth erupts at 29 months?

A

2nd molar (A, J)

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39
Q

When is the first evidence of calcification for primary Maxillary centrals (E, F)

A

14 weeks

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40
Q

When is the first evidence of calcification for primary Maxillary laterals (D, G)

A

16 weeks

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41
Q

When is the first evidence of calcification for primary Maxillary canines ( C, H)

A

17 weeks

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42
Q

When is the first evidence of calcification for primary Maxillary 1st (B, I) and 2nd molars (A, J) ?

A

1st= 15

2nd= 19

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43
Q

When is the crown completed for primary Maxillary centrals (E, F)

A

1.5 months

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44
Q

When is the crown completed for maxillary primary Laterals (D, G)

A

2.5 months

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45
Q

When is the crown completed for primary Maxillary canines (C, H)

A

9 months

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46
Q

When is the crown completed for primary Maxillary First Molars (B, I)

A

6 months

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47
Q

When is the crown completed for primary Maxillary Second Molars (A, J)

A

11 months

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48
Q

When is the root completed for primary Maxillary centrals (E, F)

A

1.5 years

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49
Q

When is the root completed for maxillary primary Laterals (D, G)

A

2 yrs

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50
Q

When is the root completed for primary Maxillary canines (C, H)

A

3.25 years

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51
Q

When is the root completed for primary Maxillary First Molars (B, I)

A

2.5 yrs

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52
Q

When is the roots completed for primary Maxillary Second Molars (A, J)

A

3 yrs

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53
Q

When is the primary Maxillary centrals exfoliated (E, F)

A

6.5 yrs

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54
Q

When is the maxillary primary Laterals exfoliated (D, G)

A

7.5 yrs

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55
Q

When is the primary Maxillary canines exfoliated (C, H)

A

11 yrs

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56
Q

When is the primary Maxillary First Molars exfoliated (B, I)

A

10 yrs

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57
Q

When is the primary Maxillary Second Molars exfoliated (A, J)

A

11 yrs

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58
Q

Which mandibular primary tooth erupted at 8 months?

A

Mandibular central (P,O)

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59
Q

Which mandibular primary tooth erupted at 11 months?

A

Mandibular lateral (Q, N)

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60
Q

Which mandibular primary tooth erupted at 19 months?

A

Canines (R, M)

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61
Q

Which mandibular primary tooth erupted at 16 months?

A

1st molar (S, L)

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62
Q

Which mandibular primary tooth erupted at 27 months?

A

2nd molar (T, K)

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63
Q

When is the first evidence of calcification for primary Mandibular centrals ?

A

14 weeks (in utero)

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64
Q

When is the first evidence of calcification for primary Mandibular laterals ?

A

16 weeks (in utero)

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65
Q

When is the first evidence of calcification for primary Mandibular canines ?

A

17 weeks (in utero)

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66
Q

When is the first evidence of calcification for primary Mandibular 1st and 2nd molars ?

A

1st molars: 15.5 weeks (utero)

2nd molars: 18 weeks (utero)

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67
Q

which primary mandibular tooth has a crown completed at 2.5 months?

A

centrals

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68
Q

which primary mandibular tooth has a crown completed at 3 months?

A

laterals

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69
Q

which primary mandibular tooth has a crown completed at 9 months?

A

canines

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70
Q

which primary mandibular tooth has a crown completed at 5.5 months?

A

1st molars

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71
Q

which primary mandibular tooth has a crown completed at 10 months?

A

2nd molars

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72
Q

which primary mandibular teeth have roots completed at 1.5 years?

A

centrals and laterals

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73
Q

which primary mandibular tooth has a root completed at 3.25 years?

A

canines

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74
Q

which primary mandibular tooth has a root completed at 2.25 years?

A

1st molars

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75
Q

which primary mandibular tooth has a root completed at 3 years?

A

2nd molars

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76
Q

which primary mandibular tooth is exfoliated at 6.5 years?

A

centrals

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77
Q

which primary mandibular tooth is exfoliated at 7.5 years?

A

laterals

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78
Q

which primary mandibular tooth is exfoliated at 10.5 years?

A

canines

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79
Q

which primary mandibular tooth is exfoliated at 10 years?

A

1st molars

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80
Q

which primary mandibular tooth is exfoliated at 11 years?

A

2nd molars

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81
Q

Which permanent teeth are the first to initiate calcification and do so after birth?

A

1st molars

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82
Q

Mandibular teeth erupt before their __________ counterparts except the maxillary ______________ which may erupt at the __________ time or before the mandibular ______________

A
  • maxillary
  • 2nd PREMOLARS
  • same
  • 1st PREMOLARS
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83
Q

Which teeth are the first permanent teeth to erupt ?

  • At which age?
  • what does this initiate?
A
  • 1st molars (at 6 yrs of age)

- This initiates the “mixed dentition” phase

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84
Q

Which permanent teeth are the 1st succedaneous teeth to erupt?
-when does this occur?

A
  • Mandibular central incisors

- 6-7 yrs of age

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85
Q

Which permanent teeth are the LAST succedaneous teeth to erupt?

A

Maxillary canines

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86
Q

Which permanent teeth are the LAST to initiate calcification?
-At what age?

A
  • 3rd molars
  • 9 years old

Note: Also the LAST to complete crown formation & erupt

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87
Q

Which permanent teeth initially calcify at 3.5 months?

A

Maxillary & Mandibular CENTRALS

and Mandibular Laterals

88
Q

Which permanent teeth initially calcify at 1 year?

A

Maxillary laterals

89
Q

Which permanent teeth initially calcify at 2 years?

A

Maxillary and Mandibular 1st and 2nd PREMOLARS

90
Q

Which permanent teeth initially calcify at 3 years?

A

Maxillary and Mandibular 2nd Molars

91
Q

Which permanent teeth initially calcify at 9 years?

A

Maxillary and Mandibular 3rd Molars

92
Q

Which permanent teeth initially calcify at birth?

A

Maxillary and Mandibular 1st Molars

93
Q

Which permanent teeth initially calcify at 4.5 months?

A

Maxillary and Mandibular Canines

94
Q

In a Facial or Lingual view all teeth are _____________ with the _________ parallel side oriented cervically (gingival)

A
  • TRAPEZOIDAL

- shorter

95
Q

In a proximal view, all anterior teeth are ________________ with the apex oriented _________

A
  • TRIANGULAR

- incisally

96
Q

In a proximal view, maxillary posterior teeth are ___________. With the _________ parallel side orientated occlusally

A
  • TRAPEZOIDAL

- shorter

97
Q

In a proximal view, Mandibular posterior teeth are ___________

A

-RHOMBOIDAL

98
Q

In a proximal view, which teeth are centered over the long axis bisector of the tooth ?

A

Maxillary incisors

99
Q

In a proximal view, which teeth have a cusp tip that is centered over or slightly facial to the ling axis bisector of the tooth (never lingual)

A

Maxillary canines

100
Q

In a proximal view, which teeth are lingual to the long-axis bisector of the tooth?

A

Mandibular Incisors & canines

101
Q

The mesial cusp ridge is slightly shorter that the distal cusp ridge in which teeth?
-Exceptions?

A

Teeth with one facial cusp

EXCEPTIONS:

1) MAX 1st PREMOLAR
2) PRIMARY MAX CANINES

102
Q

________ of teeth when measured occlusocervially tend to get __________ from the canine to the __________

A
  • Crowns
  • shorter
  • 3rd molar
103
Q

All teeth develop from ________ lobes

Exceptions?

A

4 lobes

  • EXCEPTIONS:
    1) Permanent MAX 1st molar
    2) Permanent MAND 1st molar
    3) 3-cusp MAND 2nd Premolar (all exceptions develop from 5 lobes)
104
Q

Generally the _________ portion of a tooth is better developed and measures more ________________ as well as ______________ than does the _______ portion

A
  • Mesial
  • Occlusocervically
  • Cervivoapically
  • distal
105
Q

When comparing like classifications of teeth (molars vs premolars) the more ___________ the tooth, there is the likelihood for it to have more ____________ anatomy, sometimes termed ___________ anatomy.

A
  • Posterior the tooth
  • Supplemental
  • “tertiary anatomy” (supplemental ridges, grooves, etc)

Note: 3rd M > 2nd M > 1st M

106
Q

The LARGEST cusp on molars will be the __________ supporting cusp.
Maxillary?
Mandibular?

A
  • Mesial
  • MAX: ML
  • Mandibular MF
107
Q

The roots of all teeth are inclined ________

A

distally

108
Q

If a single root has _______ canals, they will be oriented one ______________ and one _______________

A
  • 2 canals
  • Facial
  • Lingual
109
Q

Teeth erupt with as many ___________ as they have cusps. The ________ follows the overall outline of the crown so its WIDEST portion will correlate to the _________ of the __________

A

-Pulp horns
-Pulp chamber
-WIDEST
Crown

110
Q

Single molar MF root with more than one canal is ?

A

Maxillary 1st molar

111
Q

Single molar M root with more than one canal is ?

A
  • Mandibular 1st molar

- Mandibular 2nd molar

112
Q

Single molar D root with more than one canal ?

A
  • Mandibular 1st (31.6%) molar

- Mandibular 2nd (14.9%) molar

113
Q

Which tooth has M & D root depressions and is also the anterior tooth most linked to have BIFURCATED ROOT?

A

Mandibular canine

114
Q

Which tooth has M & D that is the next most likely, root depressions?

A

Mandibular lateral incisors (next most likely)

115
Q

Which tooth rarely & least likely has M & D root depression

A

Mandibular central incisors

116
Q

Which teeth do NOT HAVE multiple canals?

A

-Maxillary anterior teeth

117
Q

Which teeth have 2 canals (ALWAYS) and 2 roots (usually) ; F and L rarely 3 but if so MF, DF, & L ?

A

MAX premolars

118
Q

Which variant pulp morphology can have 2 canals & occasionally 2 root?

A

Maxillary premolars

119
Q

Mandibular 2nd Premolars MOST likely have ________ root and _________ canal:

A
  • 1 root

- 1 canal

120
Q

Which tooth is the only tooth with a pulp WIDER Mesiodistally than Faciolingually?

A

Maxillary central incisor

121
Q

Which tooth is significant faciolingual faber, hence the pulp chamber are TRIANGULAR when viewed incisally in cross section?

A

Maxillary central & laterals incisors

122
Q

What are the characteristics of Maxillary Central incisors?

A

1) M-D crown dimension GREATEST of ANY ANTERIOR
2) M curvature of cervical line toward incisal GREATEST of any tooth
3) Incisal ridge CENTERED LABIOLINGUALLY

123
Q

What are the characteristics of Max Laterals?

A

1) M-D crown dimension SMALLEST of any MAX tooth
2) Tooth w/ MOST developmental abnormalities (exempting 3rd molars)
3) MOST cervically located contact area of any incisor (centered D contact area)
4) M-D ( 6.5 mm) and F-L ( 6.0 mm) dimensions CLOSER than any other anterior
5) Incisal ridge centered labiolingually

124
Q

What are the characteristics of MAND Centrals?

A

1) Crown SMALLEST of any tooth
2) Bilaterally symmetrical crown

3) PRoximoincisal line angles SHARPEST of any tooth
(shared w/ MI line angle of MAX lateral incisor)

4) Proximal Contact at the same level as incisal 1/3
5) incisal edge lingual to FL bisector (shared w/ all MAND ANT teeth)

6) Unique characteristics shared w/ MAND LATERAL
- FEWEST facial Dev. depression, line & groove
- SMOOTHEST lingual contours
- LEAST developed Cingulum

125
Q

What are the features for MAND LATERALS?

A

1) Crown “twisted” on root; seen from 2 views
- Mesial: can be seen lingually of DMR
- Incisal : from mesial –> distal, incisal ridge curves lingually

2) Shared unique characteristics w/ Mandibular Central
3) MI line angle sharp; DI less so

126
Q

Which tooth/teeth has…
1) The GREATEST overall tooth length

2) Longest root length of any maxillary/ mandibular teeth?

A

1) Mandibular Canine and Maxillary Canine

2) Maxillary Canine- LONGEST of any tooth
Mandibular Canine- LONGEST of any Mandibular tooth

127
Q

Which tooth has F-L dimensions greatest of any anterior tooth?

A

Maxillary Canine

128
Q

Which tooth has a Distal bulge (pinched or stretched distally)

A

Maxillary Canine

129
Q

Which tooth is the ONLY premolar with mesial cusp ridge linger than dotal cusp ridge (facial cusp) ?

A

Maxillary 1st Premolar

130
Q

Which tooth has an I-C crown length GREATEST of any tooth?

A

Mandibular Canine

131
Q

Which tooth has a cusp tip centered w/ or Facial to FacioLingual bisector (never lingual) ?

A

Maxillary Canine

132
Q

Which tooth has a Mesial crown & root surfaces aligned in a straight line?

A

Mandibular Canine

133
Q

Which tooth has the greatest cervical prominence of any anterior tooth?

A

Maxillary Canine

134
Q

Which tooth from a proximal view: facial crown and root curvature “C” shaped

A

Mandibular Canine

135
Q

Which tooth has a Facial ridge prominence greatest of any anterior tooth?

A

Maxillary Canine

136
Q

Which tooth has Distal contact area centered F-L and C-I ?

A

Maxillary Canine

137
Q

Which tooth has a cusp tip/incisal edge Lingual to FacioLingual bisector(shared with all mandibular anterior teeth)

A

Mandibular Canine

138
Q

Which tooth has a ML & DL fossae each have distinct boundaries w/ the Lingual ridge being common to BOTH and the cingulum being the MOST cervical boundary of each

A

Mandibular Canine

139
Q

Which tooth has a Mesial marginal ridge (developmental) groove ?

A

Maxillary 1st Premolar

140
Q

Which tooth has a Mesial crown concavity?

A

Maxillary 1st Premolar

141
Q

Which tooth has a Mesial root depression?

A

Maxillary 1st Premolar

142
Q

Which tooth has a L cusp 1.0 mm shooter than F cusp?

A

Maxillary 1st Premolar

143
Q

Which tooth has a deep central developmental groove?

A

Maxillary 1st Premolar

144
Q

Which tooth has more bilaterally symmetrical than any other posterior tooth?

A

Maxillary 2nd Premolar

145
Q

Which tooth has the presence of ML groove (unique, only tooth to have this developmental groove)

A

Mandibular 1st Premolar

146
Q

Which tooth has F-L frown dimension smallest of any posterior tooth and the same as the mandibular canine (7.5mm)

A

Mandibular 1st Premolar

147
Q

Which tooth has cusp heights closer than any other premolar ?

A

Maxillary 2nd Premolar

148
Q

Which tooth has M and D fossae closer to one another than any other posterior tooth?

A

Maxillary 2nd Premolar

149
Q

Which tooth has FL (7.5mm) —MD (7.0 mm) crown dimensions closer than any other mandibular tooth hence occlusal crown from is said to be diamond shaped?

A

Mandibular 1st Premolar

150
Q

Which tooth has 2 varieties:

(a) 2-cusp: “U” or “H” occlusal groove pattern
(b) 3-cusp: “Y” occlusal groove pattern & more common

A

Mandibular 2nd Premolar

151
Q

Which tooth has M contact area cervical to D contact area?

A

Mandibular 1st Premolar

152
Q

Which tooth is sloped occlusal surface visible from lingual aspect?

A

Mandibular 1st Premolar

153
Q

Which tooth has a M marginal ridge slopes lingually (45 degrees) and is cervical to D marginal ridge?

A

Mandibular 1st Premolar

154
Q

Which tooth has 3-cusps ONLY premolar w/ multiple lingual cusps and develops from 5 lobes?

A

Mandibular 2nd Premolar

155
Q

Which tooth has a L cusp that is small, non-functional and almost cingulum-like ?

A

Mandibular 1st Premolar

156
Q

Which tooth has 3-cusp and is the ONLY premolar with a LINGUAL GROOVE?

A

Mandibular 2nd Premolar

157
Q

This tooth and the 3-cusp variety mandibular 2nd premolar are the ONLY permanent teeth where the Mesiodistal lingual calibration is greater than on the facial

A

Maxillary 1st Molar

158
Q

Which has 3-cusp and is the ONLY premolar with a CENTRAL FOSSA?

A

Mandibular 2nd Premolar Mandibular 2nd Premolar

159
Q

Which tooth is a 3- cusp premolar and Maxillary 1st molar ONLY permanent teeth where the lingual calibration measures greater than facial, i.e. the crown does not taper Faciolingually ?

A

Mandibular 2nd Premolar

160
Q

Which tooth is a 3-cusp premolar L height of contour in occlusal 1/3 of crown ?

A

Mandibular 2nd Premolar

161
Q

Which tooth is a 3-cusp premolar and the MOST likely premolar to be congenitally missing ?

A

Mandibular 2nd Premolar

162
Q

Which tooth has a 5th cusp (Carabelli) augments lingual surface of the ML cusp ?

A

Maxillary 1st Molar

163
Q

Which tooth has 4 primary cusps, RARELY a 5th cusp?

A

Maxillary 2nd Molar

164
Q

Which tooth has an Oblique ridge (all maxillary molars) formed by the Distal cusp ridge of the ML cusp and the Triangular ridge of the DF cusp ?

A

Maxillary 1st Molar

165
Q

Which tooth has a Primary cusp triangle (all maxillary molars): MF, DF & ML cusps

A

Maxillary 1st Molar

166
Q

Which tooth is centered towards the distal contact area?

A

Maxillary 1st Molar

167
Q

Which tooth has diminished DL cusp size, and the primary cusp triangle remains?

A

Maxillary 2nd Molar

168
Q

Which tooth has a CENTERED distal contact area?

A

Maxillary 2nd Molar

169
Q

Which tooth has an Oblique ridge (all maxillary molars)

A

Maxillary 2nd Molar

170
Q

Which tooth has the SMALLEST OC crown dimension of ANY tooth?

A

Maxillary 3rd Molar

171
Q

Which tooth has the shortest root(s) of any Maxillary tooth

A

Maxillary 3rd Molar

172
Q

Which tooth has a more distal inclination of roots of any maxillary tooth?

A

Maxillary 3rd Molar

173
Q

Which tooth has a primary cusp triangle present (heart showed crown) or many have vestige of DL cusp (talon)

A

Maxillary 3rd Molar

174
Q

Which tooth has the LARGEST M-D crown dimension of any tooth (11.0 mm)

A

Mandibular 1st Molar

175
Q

Which tooth has multiple supplemental ridges & grooves?

A

Maxillary 3rd Molar

176
Q

Which tooth has the LARGEST F-L crown dimension of ANY mandibular tooth (10.5 mm)

A

Mandibular 1st Molar

177
Q

Which tooth has an Oblique ridge (all maxillary molars)

A

Maxillary 3rd Molar

178
Q

Which tooth has the LARGEST O-C crown dimension of any mandibular molar?

A

Mandibular 1st Molar

179
Q

Which tooth has the LONGEST root length of any molar (14.0 mm)

A

Mandibular 1st Molar

180
Q

Which tooth has GREATEST Mesiodisal roots separation of any tooth?

A

Mandibular 1st Molar

181
Q

Which tooth has a characteristic MF crown prominence?

A

Mandibular 2nd Molar

182
Q

Which tooth has a M root that has the GREATEST F-L dimension of any root

A

Mandibular 1st Molar

183
Q

Which tooth is the ONLY tooth w/ 2 facial developmental grooves?

A

Mandibular 1st Molar

184
Q

Which tooth has a characteristic “+” shaped occlusal groove pattern

A

Mandibular 2nd Molar

185
Q

Which tooth has ALL cusps of “near” equal size?

A

Mandibular 2nd Molar

186
Q

Which tooth has a centered Distal Proximal contact (along w/ maxillary lateral incisor, canine, 1st molar and 2nd molar) ?

A

Mandibular 2nd Molar

187
Q

Which tooth has the SMALLEST OC crown dimension of any mandibular tooth?

A

Mandibular 3rd Molar

188
Q

Which tooth has the WIDEST tooth Mesiodistally ?

A

Mandibular 1st Molar

189
Q

Which tooth is MORE bulbous crown form than any other mandibular tooth?

A

Mandibular 3rd Molar

190
Q

Which tooth has a MORE Distal root inclination than any other mandibular tooth ?

A

Mandibular 3rd Molar

191
Q

Which tooth has the SHORTEST root(s) of any mandibular teeth?

A

Mandibular 3rd Molar

192
Q

Which tooth has multiple supplemental ridges & groove?

A

Mandibular 3rd Molar

193
Q

Which tooth is the WIDEST primary tooth Mesiodistally?

A

Mandibular 2nd Molar

194
Q

Which tooth is the WIDEST anterior tooth Mesiodistally?

A

Maxillary Central

195
Q

Which tooth is the WIDEST tooth Faciolingually?

A

Maxillary 1st Molar

196
Q

Which tooth is the WIDEST primary tooth Faciolingually?

A

Maxillary 2nd Molar

197
Q

Which tooth is WIDEST anterior tooth Faciolingually ?

A

Maxillary canine

198
Q

Which tooth is the ONLY tooth w/ a pulp chamber WIDER mesiodistally than Faciolingually?

A

Maxillary Central

199
Q

Which teeth are the ONLY teeth to measure WIDER lingually than facially?

A

1) Primary MAX 2nd Molar
2) Permanent MAX 1st Molar
3) 3-cusp Variety Mandibular 2nd Premolar

200
Q

Which teeth are considered the LONGEST teeth (from cusp tip to root tip)

A

1) MAX canine & MAND canine (BOTH 27.0 mm)

201
Q

Which tooth has the LONGEST root (CEJ to apex)

A

Maxillary Canine (17.0 mm)

202
Q

Which tooth has the TALLEST crown incisogingivally?

A

1) Mandibular canine ( 11.0 mm ) >
2) Maxillary Central ( 10.5 mm) >
3) Maxillary Canine ( 10.0 mm)

203
Q

The Maxillary Lateral (other than the 3rd molars, are the MOST common permanent tooth to have anomalies). What are they?

A

1) Dens in dente
2) Congenitally missing (2nd MOST common tooth)
3) Microdontia
4) Peg lateral
5) Supernumerary

204
Q

What is Mesiodens?

A

The MOST common incident of a supernumerary tooth (between Maxillary central incisors)

205
Q

Which tooth is MOST likely premolar to be congenitally missing?

A

Mandibular 2nd premolar

206
Q

Which tooth is MOST common tooth to be congenitally missing or malformed?

A

3rd Molars

207
Q

Which tooth has the SMALLEST anatomical crown?

A

Mandibular Central

208
Q

Which Anterior tooth has the MOST symmetrical anatomical crown?

A

Mandibular Central

209
Q

Which Posterior tooth has the MOST symmetrical anatomical crown?

A

Maxillary 2nd Premolar

210
Q

Which tooth has the NARROWEST M-D measurement ?

A

Mandibular Central

211
Q

Which tooth has the BEST developed lingual anatomy?

A

Maxillary Lateral

212
Q

Which tooth is the ONLY tooth with a Linguogingival Groove

A

Maxillary Lateral

213
Q

Which tooth is the ONLY tooth w/ a Mesiolingual groove?

A

Mandibular 1st Premolar

214
Q

Which tooth is the ONLY tooth w/ a Mesial marginal developmental groove?

A

Maxillary 1st Premolar

Maxillary molars may have Supplemental marginal grooves

215
Q

Which tooth has the SMALLEST facial embrasure in the mouth or the SMALLEST lingual embrasure in the mouth is between what?

A

The TWO Mandibular central incisors

Note: They are ESSENTIALLY of EQUAL SIZE

216
Q

What is Concrescence?

A

The cementum of 2 proximal teeth is FUSED together. When seen usually associated w/ 2nd & 3rd Molars as well as anterior teeth.

217
Q

Which teeth are usually IMPACTED?

A

-Most seen in:

1) 3rd MOLARS
2) MAXILLARY CANINES
3) MANDIBULAR 2nd PREMOLARS

NBDE Review (2 decks)

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