Dental Anatomy and Occlusion Quiz 15

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Question 1 of 20

1. Question

The proximal contact positions of the maxillary canine are in which areas?

Mesial: Incisal 3rd; Distal: Junction of the incisal and middle 3rds
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Mesial: Incisal 3rd; Distal: Middle 3rd
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Mesial: Junction of the incisal and middle 3rds; Distal: Junction of the incisal and middle 3rds
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Mesial: Junction of the incisal and middle 3rds; Distal: Middle 3rd
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Mesial: Middle 3rd; Distal: Junction of the incisal and middle 3rds
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Question 2 of 20

2. Question

All of the following are true of eruption EXCEPT

boys’ teeth generally erupt before girls’ teeth.
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mandibular teeth generally erupt before maxillary teeth.
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teeth generally erupt in contralateral pairs.
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eruption starts after at least 50% of root formation is complete.
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all of the above are true.
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Question 3 of 20

3. Question

The occlusal surface of the primary maxillary 1st molar is

square
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rectangular
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trapezoidal
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rhomboidal
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Question 4 of 20

4. Question

An individual who never formed 3rd molars has which of the following?

Anodontia
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Hypodontia
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Oligodontia
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Hyperdontia
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Metadontia
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Question 5 of 20

5. Question

The nonworking pathway of the mesial cusps on mandibular posterior teeth is in which direction?

Distofacial
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Distolingual
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Mesiofacial
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Mesiolingual
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Question 6 of 20

6. Question

The mesial proximal contact area of tooth No. 29 is located where?

Incisal 3rd
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Junction of the incisal and middle 3rds
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Middle 3rd
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Junction of the middle and cervical 3rds
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Cervical 3rd
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Question 7 of 20

7. Question

Which of the following intrinsic muscle fibers flattens and broadens the tongue?

Vertical
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Horizontal
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Longitudinal
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Transverse
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Question 8 of 20

8. Question

Anterior teeth have 4 line angles. Posterior teeth have 6 line angles.

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 9 of 20

9. Question

If not coincidental, the average slide from centric relation to centric occlusion is

1–2 mm
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2–4 mm
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4–6 mm
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6–8 mm
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Question 10 of 20

10. Question

You are evaluating maxillary and mandibular CT scans for a patient who has recently had facial trauma. Out of curiosity, you notice the natural inclination of roots within the alveolar bone on the sagittal slices. Which tooth root has the greatest horizontal axial inclination?

Maxillary central incisor
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Maxillary lateral incisor
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Maxillary canine
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Mandibular central incisor
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Mandibular canine
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Question 11 of 20

11. Question

On a 3-cusped mandibular 2nd premolar, how many cusps can be seen from the mesial and distal, respectively?

2 from the mesial; 2 from the distal
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3 from the mesial; 2 from the distal
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2 from the mesial; 3 from the distal
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3 from the mesial; 3 from the distal
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Question 12 of 20

12. Question

Which of the following is typically the last primary tooth to exfoliate?

Maxillary canine
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Mandibular canine
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Maxillary 2nd molar
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Mandibular 2nd molar
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Maxillary 1st molar
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Question 13 of 20

13. Question

Which of the following cusps on a mandibular 1st molar has the largest pulp horn?

Mesiobuccal
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Distobuccal
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Mesiolingual
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Distolingual
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Distal
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Question 14 of 20

14. Question

In which of the following mandibular positions would you find the greatest increase in VDO from centric occlusion?

Centric relation
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Maximum protrusion
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Anterior edge-to-edge position
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Postural position
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Maximum opening
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Question 15 of 20

15. Question

Which of the following chronic conditions may cause tooth abrasion?

GERD
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Nocturnal bruxism
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Occlusal trauma
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Pipe smoking
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Cigarette smoking
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Question 16 of 20

16. Question

What are the typical positions of the maxillary and mandibular teeth, and the tongue during empty-mouth swallowing?

Centric occlusion; the tongue touches the palate.
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Centric occlusion; the tongue touches the lingual aspects of the anterior teeth.
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Retruded contact; the tongue touches the palate.
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Retruded contact; the tongue touches the lingual aspects of the anterior teeth.
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Rest position; the tongue touches the palate.
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Question 17 of 20

17. Question

On which primary tooth can one find an oblique ridge and, occasionally, a fifth cusp of Carabelli?

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 18 of 20

18. Question

The lingual surface of which incisor is the most concave?

Maxillary central
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Maxillary lateral
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Mandibular central
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Mandibular lateral
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Question 19 of 20

19. Question

In right lateral excursion, which of the following is correct?

The mandibular teeth move to the right.
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The mandibular teeth move to the left.
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The left mandibular teeth are on the working side.
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Both A and C.
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Both B and C.
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Question 20 of 20

20. Question

Which anterior tooth has the greatest mesiodistal length when viewed from the facial?

Maxillary central incisor
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Maxillary lateral incisor
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Maxillary canine
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Mandibular central incisor
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Mandibular lateral incisor
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Dental Anatomy and Occlusion Quiz 15

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