Dental Anatomy and Occlusion Quiz 7

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Question 1 of 20

1. Question

Which feature allows one to distinguish between the permanent mandibular lateral incisor and the permanent mandibular central incisor from an occlusal view?

A decreased mesiodistal length of the lateral incisor.
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The cingulum location is slightly distal of center on the central incisor.
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The distolingual twist of the lateral incisor’s incisal edge.
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The incisal edge of central incisor is lingual to the root axis line.
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Question 2 of 20

2. Question

How many cusp tips can be seen on a mandibular 1st molar when viewed directly from the buccal?

2
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3
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4
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5
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Question 3 of 20

3. Question

All of the following are true regarding the curve of Spee EXCEPT

the curve in the lower arch is concave.
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the curve in the upper arch is convex.
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the curve is formed by the lingual inclination of the mandibular molars.
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the curve is directed anteroposteriorly.
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Question 4 of 20

4. Question

Which tooth has the most prominent lingual ridge with mesial and distal fossae?

Maxillary central incisor
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Mandibular lateral incisor
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Maxillary lateral incisor
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Mandibular canine
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Maxillary canine
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Question 5 of 20

5. Question

On a maxillary molar the palatal root is the longest of the three roots. Among all maxillary teeth, the palatal root of the maxillary 1st molar is the 3rd longest root.

Both statements are true.
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Both statements are false.
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The first statement is true; the second is false.
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The first statement is false; the second is true.
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Question 6 of 20

6. Question

All of the following muscles involved in mastication are innervated by the mandibular branch of trigeminal nerve EXCEPT

temporalis
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masseter
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buccinator
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medial pterygoid.
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lateral pterygoid.
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Question 7 of 20

7. Question

The horizontal distance between the labioincisal surfaces of mandibular incisors and the linguoincisal surfaces of maxillary teeth is referred to as

overjet
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overbite
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openbite
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crossbite
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Question 8 of 20

8. Question

The primary mandibular 2nd molar most closely resembles which permanent tooth?

Mandibular 1st molar
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Mandibular 2nd molar
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Maxillary 1st molar
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Maxillary 2nd molar
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Question 9 of 20

9. Question

The primary teeth erupt in which of the following sequences?

ABCDE
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BACDE
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ABDCE
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ACBDE
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Question 10 of 20

10. Question

A triangular outline form is present on which of the following teeth when viewed from the proximal aspect?

Mandibular 1st premolar
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Maxillary 1st molar
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Mandibular central incisor
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Mandibular 1st molar
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Question 11 of 20

11. Question

A patient presents to your office with what appears to be five mandibular incisors. However, upon radiographic examination, you count four roots. The most likely explanation for this finding is

concrescence
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hypercementosis
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fusion
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gemination
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fibrous dysplasia.
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Question 12 of 20

12. Question

Angle classification of occlusion is based primarily on

the relationship between the maxillary and mandibular anterior teeth.
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the position of the maxillary canines
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the relationship between the maxillary and mandibular 1st molars.
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the amount of anterior overjet.
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Question 13 of 20

13. Question

Primary teeth are more constricted at the cervical 3rd than their permanent counterparts. Pulp chambers are comparatively smaller in primary teeth.

Both statements are true.
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Both statements are false.
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The first statement is true; the second is false.
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The first statement is false; the second is true.
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Question 14 of 20

14. Question

Which of the following premolars does not have a transverse ridge?

Maxillary 1st premolar
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Maxillary 2nd premolar
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Mandibular 1st premolar
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Mandibular 2nd premolar (2-cusp type)
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Mandibular 2nd premolar (3-cusp type)
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Question 15 of 20

15. Question

When the mandible shifts to the left, the right condylar head moves in which direction relative to articular eminence?

Anteriorly, downward, laterally
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Anteriorly, downward, medially
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Anteriorly, upward, laterally
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Anteriorly, upward, medially
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Posteriorly, upward, laterally
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Question 16 of 20

16. Question

Which tooth has a mesial marginal ridge that is more cervically located than the distal marginal ridge?

Maxillary 1st premolar
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Maxillary 2nd premolar
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Mandibular 1st premolar
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Mandibular 2nd premolar
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Question 17 of 20

17. Question

Which of the following tooth roots is most likely to be pushed into the maxillary sinus during extraction?

Maxillary canine
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Maxillary 1st premolar
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Maxillary 2nd premolar
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Maxillary 1st molar
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Maxillary 2nd molar
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Question 18 of 20

18. Question

Of the mandibular premolars, the 1st premolar has the longest and sharpest buccal cusp. Among maxillary premolars, the 2nd premolar has the longest and sharpest buccal cusp.

Both statements are true.
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Both statements are false.
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The first statement is true; the second is false.
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The first statement is false; the second is true.
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Question 19 of 20

19. Question

All of the following are true regarding primary molars in comparison to permanent molars EXCEPT

primary teeth have roots that are longer, more slender, and highly divergent. B
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primary molars have a much more pronounced buccal cervical ridge.
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deciduous enamel is thinner, and has a more consistent depth throughout the crown.
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primary molars have shorter root trunks.
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primary molars have well-defined occlusal anatomy with pronounced ridges and deep fossae.
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Question 20 of 20

20. Question

How many premolars are found in each quadrant of a normal deciduous dentition?

0
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1
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2
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4
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Dental Anatomy and Occlusion Quiz 7

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