✨✨Dental Anatomy Chapter 3

1. Which of these teeth is likely to form from four lobes?

A. Maxillary central incisor

B. Mandibular lateral incisor

C. Maxillary canine

D. Mandibular canine

E. All of these teeth form from four lobes.

E

2. When holding a maxillary and mandibular canine, which characteristic(s) can be used to distinguish the mandibular canine?

A. A mandibular canine has a less prominent cingulum.

B. The mesial side of a mandibular canine crown and root is relatively straight.

C. The incisal edge of a mandibular canine is located lingual to the center of the tooth.

D. All of these choices are correct.

D

3. Which of the following is NOT normally a characteristic of a mandibular canine? A. Wear from chewing will be seen more on the facial half of the incisal edge.

B. The distal cusp ridge is longer than the mesial cusp ridge.

C. The cusp is sharper than the cusp of the maxillary canine.

D. The curve of the cervical line on the distal is less pronounced than the curve of the cervical line on the mesial.

C

4. When holding an extracted maxillary and mandibular canine from the same mouth, which characteristic(s) can be used to distinguish the maxillary canine? A. The maxillary canine has a less prominent cingulum.

B. The mesial side of the maxillary canine crown and root form a relatively straight line.

C. The incisal edge of the maxillary canine is located lingual to the center of the tooth.

D. The cusp of the maxillary canine is more pointed.

E. All of these choices are correct.

D

5. Which of the following teeth has the most symmetrical crown?

A. Maxillary lateral incisor

B. Mandibular lateral incisor

C. Mandibular central incisor

D. Mandibular canine

E. Maxillary canine

C

6. Which characteristic (trait) of canines does NOT also apply to all incisors?

A. The crown is wider faciolingually than mesiodistally.

B. The facial and lingual crests of curvature (heights of contour) are located in the cervical third of the crown.

C. The crown is wedge shaped (somewhat triangular) when viewed from the proximal view.

D. When viewed from the mesial or distal, the lingual outline is somewhat S-shaped.

A

7. With the long axis of the tooth vertical, which ridge is most nearly horizontal?

A. The mesial cusp ridge of the maxillary canine

B. The distal cusp ridge of the maxillary canine

C. The mesial cusp ridge of the mandibular canine

D. The distal cusp ridge of the mandibular canine

E. The mesial marginal ridge of the mandibular canine

C

8. Which anterior tooth is normally wider mesiodistally than faciolingually?

A. Maxillary central incisor

B. Maxillary canine

C. Mandibular central incisor

D. Mandibular lateral incisor

E. Mandibular canine

A

9. When viewed from the facial, what is the geometric shape of a canine?

A. Triangular (wedge) shaped

B. Rectangular shaped

C. Pentagon shaped

D. Square shaped

E. Rhomboid shaped

C

10. Which tooth is most symmetrical (the right half and left half look alike)?

A. Maxillary central incisor

B. Mandibular central incisor

C. Maxillary lateral incisor

D. Mandibular lateral incisor

E. Mandibular canine

B

11. Which statement is NOT true when describing a mandibular canine?

A. From the facial view, the mesial root and crown contours are nearly in a straight line.

B. The incisal edge is positioned more to the lingual on the distal half (distolingual twist).

C. The cingulum and marginal ridges are prominent compared to maxillary canines.

D. The mesial cusp ridge is often close to horizontal (compared to the maxillary canines).

E. The cusp is less pointed (more obtuse) than on the maxillary canine.

C

12. Which trait can be used to describe all canines and all types of incisors?

A. The mesial contact is more cervical than the distal contact.

B. The mesial crest of curvature (contact area) is more rounded than the distal.

C. The cingulum is positioned more to the mesial.

D. The curvature of the mesial cervical line is greater than the curvature of the distal cervical line.

E. The mesioincisal angle is more rounded than the distoincisal angle.

D

13. Which tooth root is least likely to have a cavitation on both the mesial and distal surface?

A. Maxillary central incisor

B. Mandibular central incisor

C. Mandibular lateral incisor

D. Maxillary canine

E. Mandibular canine

A

14. Which anterior tooth has a mesial cusp slope that is more nearly horizontal?

A. Maxillary central incisor

B. Maxillary canine

C. Mandibular central incisor

D. Mandibular lateral incisor

E. Mandibular canine

E

15. Which of the following characteristics is most often true for all incisors and for all canines?

A. The proximal view outlines are wedge shaped.

B. The crowns are wider (in a mesiodistal dimension) than long (in an incisogingival dimension).

C. The incisal ridges are positioned slightly to the facial of the midroot axis line.

D. Facial crests of curvature (heights of contour) are located in the middle third of the crown.

E. The proximal view outlines are wedge shaped, and the crowns are wider (in a mesiodistal dimension) than long (in an incisogingival dimension).

A

16. Which characteristic is most likely to apply to the maxillary canine but NOT the mandibular canine?

A. The cingulum is off center toward the distal.

B. The incisal edge is more likely to be lingual to the midroot axis line.

C. The mesial outline of the crown and root form almost a straight line.

D. The crowns have prominent lingual ridges and fossae.

E. From the incisal view, the labiolingual dimension is greater than the mesiodistal dimension.

D

17. When viewed from the incisal, which anterior tooth is relatively wider mesiodistally than faciolingually?

A. Maxillary central incisor

B. Maxillary canine

C. Mandibular canine

D. Mandibular central incisor

E. Mandibular lateral incisor

A

18. Which of the following roots is, on average, the longest?

A. Root of a maxillary canine

B. Root of a mandibular canine

C. Lingual root of a maxillary first molar

D. Lingual root of a maxillary second molar

E. Mesial root of a mandibular first molar

A

19. Which of the following normally describes the general crown form of canines when viewed from the facial or lingual aspect?

A. Three sided

B. Four sided

C. Five sided

D. Six sided

E. Seven sided

C

20. The distal contact area of the maxillary canine is located in the —of the crown.

A. incisal third

B. junction of the incisal and middle thirds

C. center of the middle third

D. junction of the middle and cervical thirds

E. cervical third

C

21. The mesial contact of the crown of the maxillary canine is located in the— of the crown

. A. incisal third

B. junction of the incisal and middle thirds C. center of the middle third

D. junction of the middle and cervical thirds

E. cervical third

B

23. Where is the mesial contact of the permanent mandibular canine located?

A. Incisal third

B. Center of the middle third

C. Cervical third

D. Junction of the incisal and middle thirds

E. Junction of the middle and cervical thirds

A

24. Which of the following teeth is most likely to have mamelons?

A. Maxillary central incisor

B. Maxillary canine

C. Mandibular canine

D. All of these choices are correct.

E. None of these choices is correct.

A

25. Which tooth is most symmetrical (the right half and left half look alike)?

A. Maxillary central incisor

B. Mandibular central incisor

C. Maxillary lateral incisor

D. Mandibular lateral incisor

E. Mandibular canine

B

26. Which trait can be used to describe all canines and all incisors?

A. The mesial contact is more cervical than the distal contact.

B. The mesial crest of curvature (contact area) is more rounded than the distal.

C. The cingulum is positioned more to the mesial.

D. The curvature of the mesial cervical line is greater than the curvature of the distal cervical line curvature.

D

27. On an unworn permanent canine (maxillary or mandibular), the distal cusp ridge is slightly —than the mesial cusp ridge.

B

28. A depression found on the lingual surface of a canine bounded by the lingual ridge, distal cusp ridge, distal marginal ridge, and distal third of the cingulum is called a—-

distolingual fossa

29. True or false? A distinguishing characteristic of mandibular canines is the relatively straight line of the mesial outline, compared to the distal outline.

False

30. True or false? The mandibular canine occasionally has a bifurcated root.

False

31. True or false? The cingulum of the maxillary canine is larger than the cingulum of the mandibular canine on teeth within the same dentition.

False

32. True or false? Maxillary canine roots are generally longer than lateral incisor roots and shorter than central incisor roots in the same dentition.

False

33. True or false? Maxillary and mandibular canines have relatively broad roots faciolingually and narrower roots mesiodistally, often with proximal root grooves or depressions.

False

34. True or false? The anterior tooth most likely to have two roots is the mandibular canine.

False

35. True or false? On the permanent maxillary canine, the mesial cusp slope is longer than the distal cusp slope.

False

36. True or false? The mesial outline of the crown of the mandibular canine is nearly straight with the mesial outline of the root.

False