单项选择题

A．genial tubercles B． mental foramen C． nutrient canals……

Which one of the following anatomy should not appear on the periapical radiograph of the lower central incisor

A．genial tubercles
B． mental foramen
C． nutrient canals
D．inferior border of the mandible

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热门试题

单项选择题Periodontal ligament space appears as a radiolucent space between the tooth root and the （）.

A．alveolar crest
B．lamina dura
C．cancellous bone
D． trabecular bone

单项选择题Which one of the following anatomy is not usually apparent radiographically（）

A．enamel
B． dentin
C．cementum
D．pulp cavity