NBDE Quiz # 48
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NBDE Quiz # 48
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1. Question
Which feature allows one to distinguish between the permanent mandibular lateral incisor and the permanent mandibular central incisor from an occlusal view ?
CorrectThe correct answer is C. From an occlusal
view, the major feature distinguishing the
mandibular lateral incisor from the mandibular
central incisor is the presence of a distolingual
twist found in the distal half of the lateral’s
incisal edge. This distolingual twist follows the
natural arch shape of the mandible and, therefore, also allows one to easily distinguish right
from left mandibular lateral incisors. The
mandibular central incisor, on the other hand,
is bilaterally symmetrical with a centered cingulum, making it very difficult to determine
right from leftIncorrectThe correct answer is C. From an occlusal
view, the major feature distinguishing the
mandibular lateral incisor from the mandibular
central incisor is the presence of a distolingual
twist found in the distal half of the lateral’s
incisal edge. This distolingual twist follows the
natural arch shape of the mandible and, therefore, also allows one to easily distinguish right
from left mandibular lateral incisors. The
mandibular central incisor, on the other hand,
is bilaterally symmetrical with a centered cingulum, making it very difficult to determine
right from left