 Incisal, mesial marginal and distal marginal ridges
(b) Incisal, canine and mesial lingual ridges
(c) Labial, incisal and mesial marginal ridges
(d) Transverse, oblique and buccal ridges
13. Contact area of mandibular central incisor is in the
a. Junction of middle and cervical third
b. Middle third
c. Junction of incisal and middle third
d. Incisal third
14. Proximal root concavities found on the mandibular central incisors give the following shape to the cross-section of its root:
(a) Triangular
(b) Oval
(c) Dumb-bell
(d) Square
15. The anterior teeth in which it is difficult to distinguish between the mesial and distal sides are
a. Maxillary central incisors
b. Maxillary lateral incisors
c. Mandibular central incisors
d. Mandibular lateral incisors
16. Root depression on the mesial and distal aspects of the root is seen in the
a. Mandibular central and lateral incisors
b. Maxillary canines
c. Maxillary central and lateral incisors
d. Maxillary first premolars
17. Which pair of teeth are bilaterally symmetrical?
a. Maxillary central incisors
b. Mandibular central incisors
c. Maxillary lateral incisors
d. Mandibular lateral incisors
18. Crown of which tooth gives an appearance of being twisted slightly on its root base?
a. Maxillary canines
b. Mandibular central incisors
c. Mandibular canines
d. Mandibular lateral incisors
19. Which of the following is true of the mandibular lateral incisors?
a. When viewed incisally, the distal portion of the crown appears twisted lingually.
b. The crown is bilaterally asymmetrical when viewed from the labial side with the distal half carrying a major portion of the crown.
c. Cervical line is more apically placed on the lingual side than on the labial side.
d. All of the above.jpg){kind=spacer}
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