# Which of the following condition shows marked reduction in the amount of dentin, widening of predentin layer, presence of large areas of interglobular dentin and irregular pattern of dentin?
A. Hypocalcified dentin
B. Regional odontodysplasia
C. Dentin dysplasia
D. Dentinogenesis imperfecta
The correct answer is B. Regional odontodysplasia.
The most characteristic features of Regional odontodysplasia are the marked reduction in the amount of dentin, the widening of the predentin layer, the presence of large areas of interglobular dentin, and an irregular tubular pattern of dentin.
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