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D1 Fall - Morphology > Morph Final Anki 1/2 > Flashcards

Morph Final Anki 1/2 Flashcards

1
Q

The mesioincisal angle of #8 is:

A. A right angle
B. Acute
C. Obtuse
D. Rounded

A

A right angle

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2
Q

The mesial contact of a maxillary central incisor is located in the:

A. Incisal 1/3
B. Middle 1/3
C. Junction of the middle & cervical 1/3
D. Cervical 1/3

A

Incisal 1/3

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3
Q

The shape of the maxillary central incisor when viewed from the mesial is best described as:

A. Rhomboidal
B. Triangular
C. Ovoid
D. Trapezoidal

A

B. Triangular

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4
Q

On which surface of the permanent maxillary central incisor does the cervical line exhibit the greatest amount of curvature?

A. Facial
B. Lingual
C. Mesial
D. Distal

A

C. Mesial

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5
Q

Which of the following is FALSE regarding the permanent maxillary lateral incisor?

A. Anterior tooth with the most variable anatomy
B. Erupts at 8-9 years of age
C. Mesioincisal angle is a right angle
D. Crown is smaller in dimension than the maxillary central incisor
E. It has indistinct lingual anatomy

A

E. It has indistinct lingual anatomy

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6
Q

Which of the following is the most frequently missing anterior tooth?

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Maxillary canine
D. Mandibular central incisor
E. Mandibular lateral incisor

A

B. Maxillary lateral incisor

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7
Q

Compared to the maxillary central incisor, the lingual fossa of the maxillary lateral incisor is:

A. Shallower
B. Deeper
C. Of the same depth

A

B. Deeper

Explanation​: The lingual fossa of the maxillary lateral incisor also often contains a pit

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8
Q

All of the following incisal angles are rounded EXCEPT the:

A. Mesioincisal of the maxillary central incisor
B. Distoincisal of the maxillary central incisor
C. Mesioincisal of the maxillary lateral incisor
D. Distoincisal of the maxillary lateral incisor
E. A and C

A

E. A and C

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9
Q

According to the universal notation system, tooth #26 is the:

A. Permanent mandibular left lateral incisor
B. Permanent mandibular left central incisor
C. Permanent mandibular right central incisor
D. Permanent mandibular right lateral incisor

A

D. Permanent mandibular right lateral incisor

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10
Q

The smallest permanent tooth in the mouth is the:

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Mandibular central incisor
D. Mandibular lateral incisor

A

C. Mandibular central incisor

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11
Q

Which of the following is a characteristic of ALL mandibular incisors?

A. Their proximal contacts are located in the middle 1/3 inciso-cervically
B. Their distoincisal angles are rounded
C. Their facial heights of contour are in the incisal 1/3
D. They have marginal ridges on their lingual surfaces

A

D. They have marginal ridges on their lingual surfaces

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12
Q

Which of the following permanent incisors has the deepest lingual fossa?

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Mandibular central incisor
D. Mandibular lateral incisor

A

B. Maxillary lateral incisor

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13
Q

When does the maxillary central incisor erupt?

A. 6-7 years
B. 7-8 years
C. 8-9 years
D. 10-11 years

A

B. 7-8 years

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14
Q

When is the first sign of tooth development?

A. 6-7 weeks i.u.
B. 18-20 weeks i.u.
C. At birth
D. 6 months

A

A. 6-7 weeks i.u.

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15
Q

What is the longest tooth in the maxillary arch?

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Maxillary canine

A

C. Maxillary canine

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16
Q

How many lobes does the maxillary canine develop from?

A. One
B. Two
C. Three
D. Four
E. Five

A

D. Four

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17
Q

What is the first permanent tooth to erupt?

A. Mandibular central incisor
B. Mandibular lateral incisor
C. Mandibular first molar
D. Mandibular second molar

A

C. Mandibular first molar

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18
Q

In comparison to a mandibular canine, a maxillary canine:

A. Is longer incisogingivally
B. Has a cusp height that is 1⁄3 the height of the crown
C. Has a less developed cingulum
D. Is narrower mesiodistally

A

B. Has a cusp height that is 1⁄3 the height of the crown
Explanation: The cusp heigh of a mandibular canine is 1/5 the height of the crown

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19
Q

Which of the following teeth is broader faciolingually than mesiodistally?

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Mandibular central incisor

A

C. Mandibular central incisor

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20
Q

Using universal notation, what is the tooth number of the permanent maxillary left 1st molar?

A. #3
B. #14
C. #15
D. #18
E. #19

A

B. #14

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21
Q

When viewed from the buccal, what is the geometric form of the maxillary 1st premolar?

A. Triangle
B. Trapezoid
C. Rectangle
D. Rhomboid

A

B. Trapezoid

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22
Q

How many pulp horns are found in the permanent maxillary canine?

A. One
B. Two
C. Three
D. Four

A

A. One

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23
Q

True or False? In the maxillary 1st premolar, the mesial cusp arm of the buccal cusp is shorter than the distal cusp arm?

A. True
B. False

A

false

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24
Q

Which of the following teeth has a root trunk that is 1/2 to 2/3’s the length of the root?

a. Maxillary canine
b. Mandibular canine
c. Maxillary 1st premolar
d. Maxillary 2nd premolar

A

c. Maxillary 1st premolar

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25
Q

Which of the following teeth have crowns that are narrower buccolingually than mesiodistally?

A. Maxillary central incisors
B. Maxillary canines
C. Maxillary 1st premolars
D. Maxillary 2nd premolars

A

A. Maxillary central incisors

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26
Q

The mesial marginal ridge groove is found in which of the following teeth?

A. Maxillary canines
B. Mandibular canines
C. Maxillary 1st premolars
D. Maxillary 2nd premolars
E. Both maxillary 1st and 2nd premolars

A

C. Maxillary 1st premolars

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27
Q

The outline of the crowns of all posterior teeth from the facial and lingual views is best described as:

A. Oval
B. Rhomboidal
C. Trapezoidal
D. Triangular

A

C. Trapezoidal

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28
Q

The embrasures of posterior teeth are called:

A. Incisal, Gingival, Mesial, Distal
B. Occlusal, Gingival, Mesial, Distal
C. Incisal, Gingival, Buccal, Lingual
D. Occlusal, Gingival, Buccal, Lingual
E. Mesial, Distal, Buccal, Lingual

A

D. Occlusal, Gingival, Buccal, Lingual

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29
Q

In the mandibular first premolar, which groove separates the mesial marginal ridge from the lingual cusp?

A. Mesial groove
B. Mesiolingual groove
C. Central groove
D. Distal groove

A

B. Mesiolingual groove

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30
Q

When viewed from the mesial aspect, the position of the buccal cusp tip of the mandibular 1st premolar is:

A. Centered over the midline of the tooth
B. Buccal to the midline of the tooth
C. Lingual to the midline of the tooth
D. Buccal to the buccal outline of the root

A

A. Centered over the midline of the tooth

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31
Q

The premolar with the occlusal groove pattern that may simulate the letter “Y” is the:

A. Maxillary 1st
B. Mandibular 1st
C. Maxillary 2nd
D. Mandibular 2nd

A

D. Mandibular 2nd

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32
Q

The first non-succedaneous tooth to erupt is the:

A. Maxillary central incisor
B. Mandibular central incisor
C. Mandibular lateral incisor
D. Maxillary 1st molar
E. Mandibular 1st molar

A

E. Mandibular 1st molar

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33
Q

According to the universal notation system, Tooth #15 is the:

A. Primary maxillary left 1st molar
B. Primary maxillary left 2nd molar
C. Permanent maxillary left 1st molar
D. Permanent maxillary left 2nd molar
E. Permanent maxillary left 3rd molar

A

D. Permanent maxillary left 2nd molar

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34
Q

In the maxillary 1st molar, what is the structure that connects the DB cusp to the ML cusp?

A. Central groove
B. Oblique ridge
C. Primary molar triangle (trigon)
D. Cusp of Carabelli

A

B. Oblique ridge

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35
Q

The fifth or accessory cusp of the maxillary 1st molar is called:

A. Distal cusp
B. Mesiolingual cusp
C. Cusp of Carabelli
D. Cusp of Carvinelli

A

C. Cusp of Carabelli

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36
Q

The permanent maxillary 2nd molar differs from the permanent maxillary 1st molar in the number of:

A. Roots
B. Buccal grooves
C. Cusps
D. Marginal ridges

A

C. Cusps

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37
Q

Which cusp in maxillary molars becomes progressively smaller starting with the 1st molar?

A. Distolingual cusp
B. Distobuccal cusp
C. Mesiolingual cusp
D. Mesiobuccal cusp

A

A. Distolingual cusp

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38
Q

How many pulp horns, roots and canals does the maxillary first premolar typically have?

A. 1,1,1
B. 1,2,2
C. 2,1,1
D. 2,1,2
E. 2,2,2

A

E. 2,2,2

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39
Q

How many cusps are generally present in the permanent 1st & 2nd mandibular molars respectively?

A. 4,4
B. 5,5
C. 4,5
D. 5,4

A

D. 5,4

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40
Q

From the occlusal aspect, what is the shape of the permanent mandibular 2nd molar?

A. Hexagonal
B. Rectangular
C. Trapezoidal
D. Rhomboidal

A

B. Rectangular

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41
Q

Which of the following represents the normal eruption pattern for primary teeth?

A. Central incisor, lateral incisor, canine, 1st molar, 2nd molar
B. Central incisor, lateral incisor, 1st molar, canine, 2nd molar
C. 1st molar, central incisor, lateral incisor, canine, 2nd molar
D. 1st molar, 2nd molar, central incisor, lateral incisor, canine

A

B. Central incisor, lateral incisor, 1st molar, canine, 2nd molar

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42
Q

Which of the following statements is true with respect to the differences between primary & permanent teeth?

A. Primary teeth have longer root trunks
B. Primary teeth have proportionately larger pulp chambers with prominent pulp horns
C. The roots of the posterior primary teeth are closer together and often fused
D. Permanent teeth have a markedly constricted cervix compared to primary teeth

A

B. Primary teeth have proportionately larger pulp chambers with prominent pulp horns

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43
Q

Which of the following primary teeth erupts first?

A. Maxillary 1st molar
B. Mandibular 1st molar
C. Maxillary 2nd molar
D. Mandibular 2nd molar

A

A. Maxillary 1st molar

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44
Q

The roots of the primary mandibular right 1st molar are flared to allow space for the development of which tooth?

A. #20
B. #21
C. #28
D. #29
E. #30

A

C. #28

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45
Q

Which of the following statements is not correct?

A. A primary central incisor is replaced by a permanent central incisor
B. A primary canine is replaced by a permanent canine
C. A primary 1st molar is replaced by a permanent 1st molar
D. A permanent 1st molar is an accessional tooth

A

C. A primary 1st molar is replaced by a permanent 1st molar

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46
Q

Which of the following teeth has a mesial cusp arm/ridge that is longer than the distal cusp arm/ridge?

A. Permanent maxillary canine
B. Permanent mandibular canine
C. Primary maxillary canine
D. Primary mandibular canine
E. Both primary maxillary & mandibular canines

A

C. Primary maxillary canine

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47
Q

The cervical ridge would stand out the most prominently as a distinct entity in which of the following primary maxillary molars?

A. Mesiobuccal of the 1st
B. Distobuccal of the 1st
C. Mesiobuccal of the 2nd
D. Distobuccal of the 2nd

A

A. Mesiobuccal of the 1st

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48
Q

Between which of the following teeth in the primary dentition is the mandibular “primate” space usually found?

A. Central incisors
B. Central & lateral incisors
C. Lateral incisors & canine
D. Canine & 1st molar
E. 1st & 2nd molars

A

D. Canine & 1st molar

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49
Q

Which of the following teeth exhibits the MOST deviation in crown morphology?

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Mandibular lateral incisor
D. Maxillary canine
E. Mandibular canine

A

B. Maxillary lateral incisor

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50
Q

Which of the following teeth has a root truck that is 1/2 to 2/3’s the length of the root?

A. Maxillary 1st premolar
B. Mandibular 1st premolar
C. Maxillary 2nd premolar
D. Maxillary 1st molar
E. Mandibular 1st molar

A

A. Maxillary 1st premolar

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51
Q

In which arch is the second premolar larger than the first premolar?

A. Maxillary
B. Mandibular

A

B. Mandibular

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52
Q

In which of the following premolars is the mesial cusp ridge of the buccal cusp longer than the distal cusp ridge of the buccal?

A. Mandibular 1st premolar
B. Mandibular 2nd premolar
C. Maxillary 1st premolar
D. Maxillary 2nd premolar

A

C. Maxillary 1st premolar

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53
Q

Which premolar is readily identifiable by a deep mesial concavity and a groove traversing the mesial marginal ridge onto the mesial surface?

A. Mandibular 1st premolar
B. Mandibular 2nd premolar
C. Maxillary 1st premolar
D. Maxillary 2nd premolar

A

C. Maxillary 1st premolar

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54
Q

The maxillary 2nd molar develops from:

A. 3 lobes
B. 4 lobes
C. 5 lobes
D. 6 lobes

A

B. 4 lobes

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55
Q

In a molar, where do root canals usually join the pulp chamber?

A. At the level of the furcation
B. At varying levels, depending on age
C. Within the middle third of the crown
D. Within the cervical third of the crown
E. Apical to the cementoenamel junction

A

E. Apical to the cementoenamel junction

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56
Q

Compared with its permanent successors, the primary maxillary central incisor has:

A. More rounded incisal edges
B. More pronounced marginal ridges
C. A shorter root length than crown length
D. A wider mesiodistal diameter than cervicoincisal length

A

D. A wider mesiodistal diameter than cervicoincisal length

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57
Q

Which furcation in the maxillary 1st molar is closest to the CEJ?

A. Facial
B. Mesial
C. Distal
D. Lingual

A

B. Mesial

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58
Q

Which of the following is NOT an anatomic feature of permanent maxillary central incisor:

A. Cingula
B. Mamelon
C. Cuspal ridges
D. Marginal ridges

A

C. Cuspal ridges

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59
Q

A lingual pit is most frequently found on which tooth?

A

Maxillary lateral incisor

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60
Q

When viewed from the facial, which of the following angles is most rounded?

A. mesioincisal of max central incisor
B. distoincisal of max central incisor
C. mesioincisal of max lateral incisor
D. distoincisal of max lateral incisor

A

D. distoincisal of max lateral incisor

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61
Q

The smallest permanent tooth in the mouth

A

mandibular central incisor

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62
Q

What is a characteristic of all mandibular incisors?

A

They have marginal ridges on their lingual surfaces

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63
Q

When does the maxillary central incisor erupt?

A. 6-7 years
B. 7-8 years
C. 8-9 years
D. 10-11 years

A

B. 7-8 years

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64
Q

How much root development is completed when tooth first erupts into the oral cavity?

A

One half of the root is formed

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65
Q

How many primary teeth does a normally developed 6 year old child have?

A

20

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66
Q

The longest tooth (including root and crown) in the ‘upper’ arch is the….

A

Maxillary canine

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67
Q

A maxillary right canine may be distinguished from a maxillary left canine because:

A

The distal 1/2 of the canine crown shows more convexity than the mesial 1/2 as seen from the facial

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68
Q

The contact area on the mesial surface of the mandibular canine is located at the ____

A

Incisal 1/3

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69
Q

Which of the following teeth is broader faciolingually than mesiodistally?

A. maxillary central incisor
B. maxillary lateral incisor
C. mandibular central incisor

A

C. mandibular central incisor

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70
Q

Which of the following permanent teeth has the most variable anatomy?

A

Maxillary lateral incisor

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71
Q

How much root development is completed when a tooth first erupts into the oral cavity?

A. the root is completely formed
B. the root has not yet begun to develop
C. one half of the root is formed
D. the root has just begun to form

A

C. one half of the root is formed

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72
Q

The entire crown of the tooth including part that may not be visible in the oral cavity is the _____ _____

A

anatomic crown

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73
Q

When viewed from the facial, the height of contour of a permanent maxillary canine on the mesial side is located at what?

A

Junction of the middle and incisal 1/3

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74
Q

Anterior tooth most likely to have bifurcated root (F and L)

A

Mandibular canine

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75
Q

The first non-succedenous tooth to erupt is what?

A

Mandibular 1st molar

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76
Q

How many lobes does the maxillary 1st molar develop from?

A

5 (2 buccal, 3 lingual)

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77
Q

Put the cusps in order from largest to smallest for the maxillary 1st molar

A

ML > MB > DB > DL > 5th cusp

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78
Q

When viewed from mesial, geometric outline of crown #12 is

A

Trapezoidal

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79
Q

Which of the following teeth has a root trunk that is 1/2 to 2/3s the length of the root?

A. maxillary canine
B. mandibular canine
C. maxillary first premolar
D. maxillary second premolar

A

C. maxillary first premolar

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80
Q

Mesial marginal ridge groove is found in?

A

Maxillary 1st premolars

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81
Q

The outline of the crowns of all posterior teeth from the facial and lingual views is best described as what?

A

Trapezoidal

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82
Q

The CEJ in a premolar has the greatest curvature toward the occlusal on which surface?

A

Mesial

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83
Q

In the mandibular 1st premolar, which groove separates the mesial marginal ridge from the lingual cusp?

A

Mesiolingual groove

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84
Q

The mesial marginal ridge groove is found in which tooth?

A

Maxillary 1st premolar

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85
Q

Which of the following teeth have greater mesiodistal widths than faciolinguals widths?

A

maxillary central incisors and lateral incisors

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86
Q

The premolar with the occlusal groove pattern that may simulate the letter “Y” is which tooth?

A

mandibular 2nd premolar

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87
Q

According to the universal notation, tooth #15 is what?

A

Permanent maxillary left 2nd molar

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88
Q

The mesiolingual (ML) cusp of the maxillary 1st molar is separated from the distolingual (DL) cusp by what?

A

Lingual developmental groove

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89
Q

How many pulp horns, roots, and pulp canals does the left max. 1st premolar have?

A

2; 2; 2

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90
Q

What are the acute angles (when viewed occlusally) of the maxillary 1st molar?

A

MB & DL

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91
Q

What are the obtuse angles (when viewed occlusally) of the maxillary 1st molar?

A

DB & ML

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92
Q

Which furcation in the maxillary first molar is closest to the CEJ? *

A. facial
B. mesial (closest)
C. distal (furthest)
D. lingual

A

B. mesial (closest)

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93
Q

Using the universal notation system, tooth letter Q is replaced by

A

26

94
Q

From the facial view, the distal contact of the maxillary lateral incisor is located in the

A

middle 1/3

95
Q

Which premolar has a lingual cusp which is 2/3 the occlusocervical height of the buccal cusp?

A

mandibular 1st premolar

96
Q

Mandibular 1st premolar: when viewed from the mesial aspect, the position of the buccal cusp tip of the mandibular first premolar is:

A

in line over root

97
Q

Which of the following primary teeth erupts first?

A. maxillary first molar
B. mandibular first molar
C. maxillary second molar
D. mandibular second molar

A

A. maxillary first molar

98
Q

Which of the following series represents the normal eruption series for primary teeth?

A. central incisor, lateral incisor, canine, 1st molar, 2nd molar
B. central incisor, lateral incisor, 1st molar, canine, 2nd molar
C. 1st molar, central incisor, lateral incisor, canine, 2nd molar
D. 1st molar, 2nd molar, central incisor, lateral incisor, canine
E. central incisor, canine, lateral incisor, 2nd molar, 1st molar

A

B. central incisor, lateral incisor, 1st molar, canine, 2nd molar

99
Q

Which of the following statements is true with respect to major differences between primary and permanent teeth?

A. primary teeth have longer root trunks
B. primary teeth have proportionately larger pulp chambers with prominent pulp horns
C. the roots of the posterior primary teeth are closer together and often fused
D. permanent teeth have a markedly constricted cervix compared to primary teeth

A

B. primary teeth have proportionately larger pulp chambers with prominent pulp horns

100
Q

Which of the following is correct with respect to deciduous maxillary canine?

A. it has a blunt flattened cusp tip
B. it has a short root relative to the crown height
C. it has a prominent lingual ridge that runs from the cusp tip to the cingulum
D. it has a single lingual fossa
E. it is exfoliated at 8-9 years

A

C. it has a prominent lingual ridge that runs from the cusp tip to the cingulum

101
Q

Which of the following teeth has a mesial cusp arm/ridge that is longer than the distal cusp arm/ridge?

A. permanent maxillary canine
B. permanent mandibular canine
C. primary maxillary canine
D. primary mandibular canine
E. both primary maxillary and mandibular canines

A

C. primary maxillary canine

102
Q

The first sign of tooth development is seen in the embryo at ______

A. 6-7 days
B. 6-7 weeks
C. birth
D. 6-7 months

A

B. 6-7 weeks

103
Q

The cervical ridge would stand out most prominently as a distinct entity on which of the following primary maxillary molar?

A. mesiofacial of the 1st
B. distofacial of the 1st
C. mesiofacial of the 2nd
D. distofacial of the 2nd

A

A. mesiofacial of the 1st

104
Q

In the sequence of eruption of the deciduous dentition which of the following is correct?

A. maxillary central incisor erupts before mandibular central incisor
B. mandibular lateral incisor erupts before maxillary lateral incisor
C. maxillary first molar erupts before mandibular first molar
D. mandibular canine erupts before maxillary canine

A

C. maxillary first molar erupts before mandibular first molar

105
Q

Which deciduous tooth when viewed from the facial has a mesial crown height that is twice the distal crown height?

A. mandibular 1st molar
B. mandibular 2nd molar
C. maxillary 1st molar
D. maxillary 2nd molar

A

A. mandibular 1st molar

106
Q

Which primary molar has a transverse ridge, an oblique ridge, and a distolingual groove?

A. maxillary 1st
B. mandibular 1st
C. maxillary 2nd
D. mandibular 2nd

A

C. maxillary 2nd

107
Q

Considering the nature and position of mandibular incisor interproximal contacts, which of the following statements is (are) true: *

A. the gingival embrasure is larger than the incisal embrasure
B. the gingival embrasure is the same size as the incisal embrasure
C. the gingival embrasure is smaller than the incisal embrasure

A

A. the gingival embrasure is larger than the incisal embrasure

108
Q

Which of the following teeth exhibits the most deviation in crown morphology? *

A. maxillary central incisor
B. maxillary lateral incisor
C. mandibular lateral incisor
D. maxillary canine
E. mandibular canine

A

B. maxillary lateral incisor

109
Q

Which of the following represents the general crown form of canine, as viewed from the labial aspect?*

A. hexagonal
B. triangular
C. rhomboidal
D. pentagonal
E. diamond-shaped

A

D. pentagonal

110
Q

On the crown of the maxillary canine, the height of contour is normally located in the cervical 1/3 of which of the following surfaces? *

A. labial
B. lingual
C. both labial and lingual
D. neither labial or lingual

A

C. both labial and lingual

111
Q

When viewed from the mesial aspect, the position of the buccal tip of the mandibular first premolar is:

A. centered over the midline of the tooth
B. buccal to the midline of the tooth
C. lingual to the midline of the tooth
D. buccal to the buccal outline of the tooth

A

A. centered over the midline of the tooth

112
Q

Because of the presence of a fissured groove, cavity preparation most frequently need to be extended from the occlusal surface to the:

A. facial surface of maxillary molars
B. lingual surface of maxillary molars
C. lingual surface of mandibular molars
D. lingual surface of mandibular first premolars

A

B. lingual surface of maxillary molars

113
Q

In comparison with the mandibular canine, the maxillary does NOT *

A. have a shorter crown height
B. have a more pronounced cingulum
C. have a more pronounced developmental depression on the mesial surface of the root
D. have a cusp tip more nearly centered over the root when viewed from the facial

A

C. have a more pronounced developmental depression on the mesial surface of the root

114
Q

In which arch is the second premolar larger than the first premolar?

A. maxillary
B. mandibular

A

B. mandibular

115
Q

The first primary tooth to erupt in the oral cavity is the

A

primary mandibular central incisor

116
Q

How soon after eruption of a permanent tooth is the root development completed?

A

2 or 3 years

117
Q

The first sign of tooth development is seen in the embryo at

A

6-7 weeks i.u.

118
Q

Which of the following incisors has the deepest lingual fossa

A

maxillary lateral incisor

119
Q

The geometric outline of the mesial aspect of a maxillary incisor is represented by which of the following

A

triangular

120
Q

Which of the following is normal eruption age of the permanent maxillary lateral incisors?

A

8-9 years

121
Q

The cusp of the canine develops from the

A

middle labial lobe

122
Q

According to the universal notation for identity in primary teeth, tooth letter M is

A

primary left mandibular canine

123
Q

where does the gingival papilla NOT occupy?

A

Facial embrasure space

124
Q

The erupted dentition of a normally developed 9 year old consists of

A

12 primary and 12 permanent teeth

125
Q

From the facial aspect, the distal height of contour (interproximal contact) of the permanent maxillary central incisor is located

A

junction of the incisal and middle 1/3s

126
Q

The primary mandibular first molar erupts at

A

16 months

127
Q

Where three surfaces of a tooth meet is called a __________.

A

point angle

128
Q

From the facial view, the mesial contact area of the maxillary permanent canine is located

A

at the junction of the incisal and middle 1/3s

129
Q

Which premolar has a lingual developmental groove?

A

mandibular second premolar

130
Q

The crown of the permanent maxillary first molar is completely calcified (crown is completely formed) at

A

2.5-3 years

131
Q

The cingulum of a canine develops from the

A

lingual lobe

132
Q

The first sign of tooth development is seen in the embryo at

A

6-7 weeks i.u.

133
Q

When viewed from the facial, the mesial contact of a permanent mandibular canine is located in/at

A

the incisal third

134
Q

The geometric outline of the mesial aspect of the maxillary incisor is represented by which of the following

A

triangle

135
Q

The primary mandibular lateral incisor erupts at approximately

A

13 months

136
Q

Which of the following permanent incisors has the deepest lingual fossa?

A

maxillary lateral incisor

137
Q

The development of the root of permanent mandibular lateral incisor is first completed at

A

10 years

138
Q

In which of the following cusps is the mesial slope of the cusp longer than the distal slope of the cusp

A

buccal cusp of the permanent maxillary first premolar

139
Q

When viewed from the mesial, the geometric form of the permanent mandibular first premolar is best described as

A

rhomboidal in nature

140
Q

in a partly erupted tooth is the clinical crown or anatomical crown longer?

A

in a partly erupted tooth, the anatomical crown length is longer than the clinical crown length

141
Q

Which of the following CEJ is the most curved in a permanent dentition?

A

mesial of the permanent maxillary central incisor

142
Q

Which of the following premolars is most likely to develop from 5 lobes?

A

mandibular second premolar

143
Q

Which of the following is not correct about the maxillary first premolar?

A

The maxillary first premolar has a mesiolingual developmental groove.

144
Q

Considering the nature and position of mandibular incisor interproximal contacts, which of the following are true?

A. The IP contacts tend to be equidistant from the facial and lingual surfaces of the teeth
B. The IP contacts occur in the incisal 1/3 of the tooth
C. The gingival embrasure is larger than the incisal embrasure
D. All of the above

A

D. All of the above

145
Q

Which of the following is not correct about the mandibular first premolar?

A

The mandibular first premolar most commonly has three pulp horns.

146
Q

The two triangular ridges in the ______ premolar characteristically cross the occlusal surface forming a simple ridge called the transverse ridge.

A. maxillary first
B. maxillary second
C. mandibular first
D. mandibular second

A

C. mandibular first

147
Q

In the mandibular first premolar, which groove separates the mesial marginal ridge from the mesial ridge of the lingual cusp?

A. mesial groove
B. mesial lingual groove
C. central groove
D. distal groove

A

B. mesial lingual groove

148
Q

Which of the following teeth have a facial cusp with the mesial cusp ridge longer than the distal- mesial cusp arm?

A. mandibular canine
B. mandibular first premolar
C. maxillary canine
D. maxillary first premolar

A

D. maxillary first premolar

149
Q

Which of the following premolars most typically have three rather than two cusps?

A. maxillary first premolar
B. maxillary second premolar
C. mandibular first premolar
D. mandibular second premolar

A

D. mandibular second premolar

150
Q

After eruption, the maxillary first molar root development is completed by

A. 9-10 years old
B. 2-3 years old
C. 15 years old
D. 6-7 years old

A

A. 9-10 years old

151
Q

From the facial aspect, the distal height of contour (IP contact) of the permanent maxillary central incisor is located

A

junction of incisal and middle 1/3

152
Q

According to the universal notation for identifying primary tooth, tooth letter R is

A

primary mandibular right canine

153
Q

Which of the following statements is correct?

A

The primary mandibular first molar is exfoliated at 9-10 years and replaced by a succendaneous tooth

154
Q

The first primary tooth to erupt into the oral cavity is

A

primary mandibular central incisor

155
Q

How soon after the eruption of a permanent tooth is the root development completed?

A

2 or 3 years

156
Q

The first evidence of calcification of the mandibular central incisor is seen at

A

3-4 months

157
Q

From the facial view, the distal contact of the mandibular lateral incisor is located in the

A

incisal 1/3

158
Q

Which of the following is the normal eruption age of the permanent maxillary lateral incisors?

A

8-9 years

159
Q

Using the universal notation system, tooth letter N is replaced by

A

23

160
Q

Which of the following sketches illustrates the mesial view of the permanent mandibular right lateral incisor?

A

larger than central incisor

161
Q

In which of the following cusps is the mesial slope of the cusp (mesial cusp arm/mesial cusp ridge) longer than the distal slope of the cusp?

A

buccal cusp of the permanent maxillary first premolar

162
Q

All anterior teeth develop from ____ lobes.

A

4

163
Q

When viewed from the mesial, the geometric form of the crown of the maxillary first premolar is classically described as

A

trapezoidal

164
Q

The development of the root of maxillary central incisor is completed at

A

10 years

165
Q

The primary maxillary lateral incisor erupts at approximately

A

11 months

166
Q

Which of the following premolars may have a lingual development groove?

A

mandibular second

167
Q

Which of the following teeth have crown dimensions (diameters) that are broader mesio-distally than facio-lingually?

A

maxillary incisors

168
Q

The first evidence of calcification of the permanent maxillary first molar occurs at

A

birth

169
Q

The primary maxillary canine is exfoliated at approximately

A

11-12 years

170
Q

When viewed from the facial, the mesial contact of a maxillary canine located

A

the junction of the incisal and middle thirds

171
Q

Which of the following teeth has a root trunk that is 1/2 to 2/3s the length of the root?

A. maxillary first premolar
B. mandibular first premolar
C. maxillary first molar
D. mandibular first molar
E. maxillary second premolar

A

A. maxillary first premolar

172
Q

Which of the following teeth is most likely to have a bifurcated root? *

A. maxillary central incisor
B. maxillary lateral incisor
C. mandibular lateral incisor
D. maxillary canine
E. mandibular canine

A

E. mandibular canine

173
Q

In which of the following cusps is the mesial slope of the cusp (mesial cusp arm/ridge) longer than the distal slope of the cusp?

A. permanent maxillary canine
B. permanent mandibular canine
C. buccal cusp of the permanent maxillary first premolar
D. lingual cusp of the permanent mandibular first premolar

A

C. buccal cusp of the permanent maxillary first premolar

174
Q

In which premolar is the mesial marginal ridge at a lower level than the distal marginal ridge *

A. mandibular first premolar
B. mandibular second premolar
C. maxillary first premolar
D. maxillary first premolar

A

A. mandibular first premolar

175
Q

List the roots of the maxillary first molar in order from largest to smallest: mesiobuccal, distobuccal, and palatal *

A

palatal, mesiobuccal, distobuccal

176
Q

Which of the following surfaces of a tooth is always next to an adjacent tooth? *

A. distal
B. facial
C. palatal
D. occlusal
E. proximal

A

E. proximal

177
Q

Which of the following is correct? *

A. in all anterior teeth the facial embrasure space is larger than the lingual embrasure space
B. in all anterior teeth, the facial embrasure space is the same size as the lingual embrasure space
C. in all anterior teeth the facial embrasure space is smaller than the lingual embrasure space

A

B. in all anterior teeth, the facial embrasure space is the same size as the lingual embrasure space

178
Q

Between which of the following teeth in the primary dentition is the mandibular “primate” space usually found?

A. central incisors
B. central and lateral incisors
C. lateral incisors and canine
D. canine and 1st molar
E. first and second molars

A

D. canine and 1st molar

179
Q

Compared with its permanent successors, the primary maxillary central incisor has: *

A. more rounded incisal edges
B. more pronounced marginal ridges
D. a shorter root length than crown length
E. a wider mesiodistal diameter than cervicoincisal length

A

E. a wider mesiodistal diameter than cervicoincisal length

180
Q

Which of the following would be of greatest value in distinguishing between a primary mandibular 2nd molar and permanent mandibular 1st molar?

A. number of roots
B. number of cusps
C. arrangement of grooves on the occlusal surface
D. comparative size of the distal cusps

A

D. comparative size of the distal cusps

181
Q

Which of the following teeth have a cusp of Carabelli?

A. primary maxillary 1st molar and permanent maxillary 1st molar
B. primary maxillary 1st molar and permanent maxillary 2nd molar
C. primary maxillary 2nd molar and permanent maxillary 1st molar
D. primary maxillary 2nd molar and permanent maxillary 2nd molar

A

C. primary maxillary 2nd molar and permanent maxillary 1st molar

182
Q

In a tooth that is partly erupted, the clinical crown height is _____ than the anatomical crown height

A. longer
B. shorter
C. equal to

A

B. shorter

183
Q

Which of the following statements is not correct?

A. a primary central incisor is replaced by a permanent central incisor
B. a primary canine is replaced by a permanent canine
C. a primary first molar is replaced by a permanent first molar
D. a permanent first molar is an accessional tooth

A

C. a primary first molar is replaced by a permanent first molar

184
Q

The roots of the primary mandibular right first molar are flared to allow space for the development of ______:

A. #20
B. #21
C. #28
D. #29
E. #30

A

C. #28

185
Q

Mandibular 1st premolar: when viewed from the mesial aspect, the lingual cusp tip of the mandibular first premolar is:

A

in line with lingual border

186
Q

Which of the following is not correct?

A. on all ant. teeth, the cervical embrasure space > incisal embrasure space
B. in premolar teeth, the facial embrasure space < lingual embrasure space
C. gingival papilla occupies the facial embrasure space
D. the interproximal contact areas of premolar teeth are centered occlusogingivally when viewed from the buccal

A

C. gingival papilla occupies the facial embrasure space

187
Q

From a facial view, the mesial contact area of the mandibular permanent canine is located

A

in the incisal 1/3

188
Q

When viewed from the occlusal aspect the surface of the maxillary first molar has 2 acute and 2 obtuse angles. The obtuse angles are located at which of the following line angles? *

A. mesiolingual and distolingual
B. mesiobuccal and mesiolingual
C. mesiolingual and distobuccal
D. mesiobuccal and distolingual
E. distolingual and distobuccal

A

C. mesiolingual and distobuccal

189
Q

What is the geometric outline of the occlusal surface of the maxillary 1st molar?

A

Rhomboidal

190
Q

This is the union of the triangular ridge of the DB cusp and the D cusp arm of the ML cusp

A

Oblique ridge

191
Q

Is the following true or false concerning the mandibular 2nd premolar? It is the only tooth that has a mesial marginal ridge lower than the distal marginal ridge

A. True
B. False

A

B. False

192
Q

This is the second most variable shaped tooth in the mouth (second only to the third maxillary molar

A

Maxillary lateral incisor

193
Q

Which of the following teeth usually has two roots?

A

Maxillary 1st premolar

194
Q

When viewed from the mesial aspect, the position of the buccal cusp tip of the mandibular 1st premolar is: *

A

centered over the midline of the tooth

195
Q

The embrasures of the posterior teeth are called:

A. occlusal, gingival, buccal, and lingual
B. incisal, gingival, buccal, and lingual

A

A. occlusal, gingival, buccal, and lingual

196
Q

In which of the following cusps is the mesial cusp ridge/arm longer than the distal cusp ridge/arm?

A. cusp of mandibular canine
B. buccal cusp of maxillary 1st premolar
C. lingual cusp of maxillary 1st premolar
D. buccal cusp of maxillary 2nd premolar
E. lingual cusp of the maxillary 2nd premolar

A

B. buccal cusp of maxillary 1st premolar

197
Q

Which root and which tooth of the maxillary molars typically has two roots?

A

Mesialbuccal (MB) root; maxillary 1st molar

198
Q

Which cusp in maxillary molars becomes progressively smaller starting with the 1st molar?

A

distolingual (DL) cusp

199
Q

The elevation of the gingival tissue found lingual to the embrasure between the maxillary central incisors is the:

A. median rugae
B. lingual frenum
C. incisive papilla
D. incisive tubercle

A

C. incisive papilla

200
Q

How do the maxillary central and lateral incisors mainly differ?

A

Mesiodistal and incisocervical dimensions

201
Q

A permanent mandibular canine is _____ than a permanent maxillary canine

A. Narrower
B. Wider

A

A. Narrower

202
Q

When viewing a permanent maxillary canine from the mesial aspect, the line bisecting the root longitudinally passes ____ to the cusp tip

A

Lingual

203
Q

Which of the following teeth have crowns that have greater mesial distal than faciolingual widths?

A

Maxillary lateral incisors (and central)

204
Q

Which lobe does the cingulum of the canine develop from?

A

Lingual lobe

205
Q

Which permanent incisor has a lingual pit?

A. maxillary central incisor
B. mandibular central incisor
C. maxillary lateral incisor
D. mandibular lateral incisor

A

C. maxillary lateral incisor

206
Q

Which of the following permanent incisors has the deepest lingual fossa?

A. maxillary central incisor
B. mandibular central incisor
C. maxillary lateral incisor
D. mandibular lateral incisor

A

C. maxillary lateral incisor

207
Q

The shape of the maxillary central incisor when viewed from mesial is best described as:

A

Triangular

208
Q

Maxillary tooth crowns exhibit concavities on which of the following surfaces?

A. The mesial of the central incisor & 1st premolar
B. The mesial of the canine & 1st molar
C. The distal of the 1st premolar & mesial of the 2nd molar
D. The mesial of the 1st premolar & distal of the 1st molar
E. The distal of the 1st molar & mesial of the 2nd molar

A

D. The mesial of the 1st premolar & distal of the 1st molar

209
Q

Which of the following teeth is least likely to have two canals?

A. Maxillary canine
B. Mandibular canine
C. Maxillary 1st premolar
D. Mandibular 1st premolar
E. Maxillary 2nd premolar

A

A. Maxillary canine

210
Q

The deciduous molars are replaced by which teeth?

A. Permanent 1st & 2nd molars
B. Permanent 1st & 2nd premolars
C. Permanent canines & 1st premolars
D. Permanent 2nd & 3rd molars

A

B. Permanent 1st & 2nd premolars

211
Q

On a maxillary molar, which of the following ridges is formed by the union of the distal cusp ridge of the mesiolingual cusp and the triangular ridge of the distofacial cusp?

a. Cuspal
b. Central
c. Marginal
d. Oblique
e. Transverse

A

d. Oblique

212
Q

When viewed from the occlusal aspect, the surface of the maxillary 1st molar has 2 acute and 2 obtuse angles. Which are the obtuse angles?

A. Mesiolingual & distolingual
B. Mesiobuccal & mesiolingual
C. Mesiolingual & distobuccal
D. Mesiobuccal & distolingual
E. Distolingual & distobuccal

A

C. Mesiolingual & distobuccal

213
Q

Which of the following represents the largest cusp of the mandibular 1st molar?

A. Distal
B. Mesiobuccal
C. Distobuccal
D. Mesiolingual
E. Distolingual

A

B. Mesiobuccal

214
Q

Which of the following cusps is not in the primary molar triangle or trigon of the maxillary molar?

A. Mesiobuccal cusp
B. Mesiolingual cusp
C. Distobuccal cusp
D. Distolingual cusp

A

D. Distolingual cusp

215
Q

Which of the following premolars may have a lingual developmental groove?

A. Mandibular 1st premolar
B. Mandibular 2nd premolar
C. Maxillary 1st premolar
D. Maxillary 2nd premolar

A

B. Mandibular 2nd premolar

216
Q

In which premolar is the mesial marginal ridge at a lower level than the distal marginal ridge?

A. Mandibular 1st premolar
B. Mandibular 2nd premolar
C. Maxillary 1st premolar
D. Maxillary 2nd premolar

A

A. Mandibular 1st premolar

217
Q

Considering the nature and position of mandibular incisor interproximal contacts, which of the following statements is true?

A. The gingival embrasure is larger than the incisal embrasure
B. The gingival embrasure is the same size as the incisal embrasure
C. The gingival embrasure is smaller than the incisal embrasure

A

A. The gingival embrasure is larger than the incisal embrasure

218
Q

Which of the following premolars most frequently has only one pulp horn?

A. Mandibular 1st premolar
B. Mandibular 2nd premolar
C. Maxillary 1st premolar
D. Maxillary 2nd premolar

A

A. Mandibular 1st premolar

219
Q

Which of the following represents the general crown OUTLINE of canines, as viewed from the labial aspect?

A. Hexagonal
B. Triangular
C. Rhomboidal
D. Pentagonal
E. Diamond-shaped

A

D. Pentagonal

Explanation​: And the GEOMETRIC form is trapezoidal

220
Q

Which of the following surfaces of a tooth is always next to an adjacent tooth?

A. Distal
B. Facial
C. Palatal
D. Occlusal
E. Proximal

A

E. Proximal

Explanation​: Proximal surface = the surface of a tooth which faces toward an adjoining tooth in the same arch

221
Q

The mandibular 2nd premolar in general erupts ___ the mandibular 1st premolar erupts

A. Before
B. After
C. At the same time

A

B. After

222
Q

Which of the following would be of greatest value in distinguishing between a primary mandibular 2nd molar and a permanent mandibular 1st molar?

A. Number of roots
B. Number of cusps
C. Arrangement of grooves on the occlusal surface
D. Comparative size of the distal cusps

A

D. Comparative size of the distal cusps

Explanation​: All will be the same in both teeth EXCEPT for the comparative size of the distal cusps. In the primary mandibular 2nd molar, all three buccal cusps will be about the same size. This is not true in the permanent mandibular 1st molar.

223
Q

On the crown of the maxillary canine, the height of contour is normally located in the cervical third of which of the following surfaces?

A. Labial
B. Lingual
C. Both labial & lingual
D. Neither labial nor lingual

A

C. Both labial & lingual

224
Q

In the sequence of eruption of the deciduous dentition, which of the following is correct?

A. Maxillary central incisor erupts before the mandibular central incisor
B. Mandibular lateral incisor erupts before the maxillary lateral incisor
C. Maxillary 1st molar erupts before the mandibular 1st molar
D. Mandibular canine erupts before the maxillary canine

A

C. Maxillary 1st molar erupts before the mandibular 1st molar

225
Q

In a tooth that is partially erupted, how does the clinical crown height compare to the anatomical crown height? The clinical crown height is:

A. Longer
B. Shorter
C. Equal in height

A

B. Shorter

226
Q

Which of the following is correct with respect to the deciduous maxillary canine?

A. It has a blunt flattened cusp tip
B. It has a short root relative to the crown height
C. It has a prominent lingual ridge that runs from the cusp tip to the cingulum
D. It has a single lingual fossa
E. It is exfoliated at 8-9 years

A

C. It has a prominent lingual ridge that runs from the cusp tip to the cingulum

227
Q

Which deciduous tooth when viewed from the buccal has a mesial crown height that is twice that of the distal?

A. Mandibular 1st molar
B. Mandibular 2nd molar
C. Maxillary 1st molar
D. Maxillary 2nd molar

A

A. Mandibular 1st molar

228
Q

Which of the following roots typically has two canals?

A. Buccal root of a maxillary 1st premolar
B. Mesiobuccal root of a maxillary 1st molar
C. Mesiobuccal roots of maxillary 1st & 2nd molars
D. Palatal root of maxillary 1st molar
E. Distobuccal roots of maxillary 1st & 2nd molars

A

B. Mesiobuccal root of a maxillary 1st molar

229
Q

Which of the following is NOT correct?

A. In all anterior teeth the cervical embrasure space is larger than the incisal embrasure space
B. In premolar teeth, the facial embrasure space is smaller than the lingual embrasure space
C. The gingival papilla occupies the facial embrasure space

A

C. The gingival papilla occupies the facial embrasure space

230
Q

Which of the following premolars often has two roots?

A. Maxillary 1st
B. Mandibular 1st
C. Maxillary 2nd
D. Mandibular 2nd

A

A. Maxillary 1st

231
Q

When does the maxillary 1st premolar typically erupt?

A. 7-8 years
B. 8-9 years
C. 10-11 years
D. 11-12 years

A

C. 10-11 years

D1 Fall - Morphology (3 decks)

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