We use toothpase to clean our teeth and to protect it from the gems. But excess use of it can also posses negative impact of our health. According to the study, many young kids who use toothpaste more than needed are at an increased risk of dental fluorosis when they get older.

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Fluorosis is a condition that affects the teeth caused by overexposure to fluoride during the first eight years of life. Fluoride is a mineral found in water and soil.

Researchers have found that people whose drinking water naturally had more fluoride also had fewer cavities. That led to the addition of fluoride to tap water, toothpaste, mouthwash and other products. However, the study showed that when teeth are forming, too much fluoride can lead to tooth streaking or spottiness or dental fluorosis.

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The study also suggests that although experts recommend no more than a pea-sized amount, about 40 per cent of kids aged three to six used a brush that was full or half-full of toothpaste. Mary Hayes, a pediatric dentist in Chicago said, "Fluoride is a wonderful benefit but it needs to be used carefully.”