Medical MCQs

5099 MCQs  (Page 265 of 510)

Hertwig’s root sheath is formed from______________?
A. Stratum inter medium
B. Stellate reticulum
C. Outer enamel epithelium
D. Cervical loop
Moth eaten appearance of of enamel is seen in____________?
A. Odontodysplasia
B. Amelogenisis stage
C. Desmolytic stage
D. Mottled enamel
Shape of enamel rod is______________?
A. Key hole or paddle shaped
B. Square
C. Round
D. None of the above
Ameloblasts is______________?
A. A cell from which tooth enamel is formed:
B. A tissue from which tooth erupts
C. A tumour of the jaw
D. Pertaining to dentin
Enamel spindles are formed by______________?
A. Cracks
B. Ameloblasts
C. Odontoblasts
D. Hypocalcified rods
Incremental lines of Retzius appear_____________?
A. As lines in the enamel running at right angles to the enamel surface
B. As lines in the dentin running at right angles to the dentino-enamel junction
C. In enamel and follow the apposition pattern
D. In dentin and follow the appositional pattern
narled enamel is seen in_____________?
A. Proximal surface of tooth
B. Cervical region of tooth
C. Cusp tips of tooth
D. All of the above