Which of the following is NOT a characteristic of dentinogenesis imperfecta?

Dentinogenesis imperfecta is a genetic disorder that affects the development of dentin, leading to significant changes in the structure and appearance of teeth. The correct choice is based on the defining characteristics of this condition.

In dentinogenesis imperfecta, teeth typically exhibit discoloration, which can vary from a blue-gray to a yellow-brown color, depending on the severity of the defect. This discoloration is a direct result of the abnormal structure of the dentin and is a hallmark sign used for diagnosis.

Increased tooth fragility is another critical aspect of dentinogenesis imperfecta. The dental structure can be weaker than normal due to the defective dentin formation, resulting in a higher tendency for fractures and wear.

Regarding the pulp chamber, it is often not enlarged but rather smaller or obliterated due to the density and abnormality of the surrounding dentin. Thus, the statement about an enlarged pulp chamber does not accurately reflect characteristics associated with this condition.

On the other hand, the initial statement regarding the number of dentinal tubules is also misleading. In dentinogenesis imperfecta, while the structure of dentin is compromised, the characteristics regarding the quantity of dentinal tubules can vary, but typically the tubules may be fewer or