A. 4 μ m
B. 9 μ m
C. 7 μ m
D. 2 μ m
Related Mcqs:
- Shape of enamel rod is______________?
A. Key hole or paddle shaped
B. Square
C. Round
D. None of the above - Ratio of diameter of enamel rods in the DEJ to the enamel surface is______________?
A. 1:4
B. 1:1
C. 1:2
D. 2:1 - An oxidase-positive, gram-negative rod which produces a bluish-green pigment has been grown in culture from a swab obtained from an infected burn wound. This organism is susceptible to gentamicin, ticarcillin and tobramicin, but resistant to all the other antibiotics which of the following organisms is it likely to be ?
A. Escherichia coli
B. Klebsiella pnemoniae
C. Proteus miribilis
D. Pseudomonas aeruginosa - 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 - The thickness of prismless enamel in diciduous teeth is______________?
A. 25 μ m
B. 50 μ m
C. 75 μ m
D. 100 μ m - The striking difference between enamel and other mineralized tissues is______________?
A. Presence of high percentage of organic matrix
B. Presence of incremental lines
C. Enamel has high reparative capacity
D. Most of organic component is lost during mineralization - The average width of enamel rods is______________?
A. 10mm
B. 5mm
C. 2mm
D. 0.5mm - The average diameter of coronal dentinal tubules near the pulp is____________?
A. 0.2-0.5 microns
B. 2-3 microns
C. 0.2-0.3 microns
D. 7 microns - Fluid flow, in or out of the dentinal tubules is proportional to the tuble diameter by______________?
A. Third power of the diameter
B. Sixth power of the diameter
C. Square of the diameter
D. Fourth power of the diameter - The diameter of the largest arterial vessels in the pulp range from_____________?
A. 50-100 μm
B. 101-150 μm
C. 151-200 μm
D. 201-250 μm
