Which is the disease in which the teeth become weak and pitted?

Correct option is D

Ans. (d) Fluorosis
Sol. Fluorosis is caused by excessive fluoride intake, leading to weak, pitted, and discolored teeth. In severe cases, it can also affect bones, causing skeletal fluorosis. It commonly occurs in areas with high fluoride levels in drinking water.
Explanation of each option:
· (a) Cretinism – A condition caused by iodine deficiency leading to stunted growth and mental retardation. It does not affect teeth.
· (b) Rickets – Vitamin D deficiency leads to weak and deformed bones, but it does not directly cause pitted teeth.
· (c) Xerophthalmia – Vitamin A deficiency causes dry eyes and corneal damage, not dental problems.
· (d) Fluorosis – Correct answer. It results in pitted, weak, and discolored teeth due to excessive fluoride intake.