Deficiency of fluorine in drinking water caused

Options

A. dental caries
B. dental flourosis
C. skeletal fluorosis
D. goiter

Answer

### Step-by-Step Solution:

1. **Understanding Fluorine's Role**: Fluorine is an essential element that helps in the maintenance of dental health. It strengthens tooth enamel and helps prevent dental caries (tooth decay).

2. **Identifying the Effects of Fluorine Deficiency**: When there is a deficiency of fluorine in drinking water, it can lead to several health issues. The primary concern is the increased risk of dental caries.

3. **Dental Caries Explained**: Dental caries, also known as tooth decay, occurs when the dental tissues break down due to the action of acids produced by bacteria. These bacteria ferment sugars and produce acids that erode the enamel of the teeth.

4. **Other Conditions Related to Fluorine Deficiency**: While the question specifically asks about the deficiency of fluorine, it is important to note that other conditions like dental fluorosis and skeletal fluorosis are related to excess fluorine, not deficiency. Additionally, goiter is related to iodine deficiency, not fluorine.

5. **Conclusion**: The main consequence of fluorine deficiency in drinking water is the development of dental caries. Therefore, the correct answer to the question is that deficiency of fluorine in drinking water causes dental caries.