Excess presence of which of the following causes tooth decay in children?

  1. Fluoride
  2. Chloride
  3. Hardness
  4. All of the above

Answer (Detailed Solution Below)

Option 1 : Fluoride
Free
Haryana CET Full Test 1
100 Qs. 100 Marks 105 Mins

Detailed Solution

Download Solution PDF

The correct answer is Fluoride.

Key Points

  • The excess presence of fluoride causes the teeth of children mottled and discoloured.
  • Fluorosis is a condition that changes the appearance of tooth enamel in young children and it is a result of being exposed to too much fluoride.
  • Signs of severe fluorosis include:
    • Brown spots on tooth enamel
    • Pitting of the tooth enamel
    • Permanent damage to the teeth of children
  • Fluoride present in toothpaste or drinking water can cause mottling of children's teeth, normally caused in children less than eight years by overexposure of teeth to fluoride.

Additional Information

  • Chlorine is a necessary and effective way to kill harmful bacteria in drinking water and swimming pools.
  • Chlorinated pools and hot tubs contain pH levels that can cause enamel erosion on teeth (Swimmer’s calculus).
  • Some effects on teeth are:
    • Become discoloured.
    • The edges of the front teeth may look transparent.
    • Extreme dental sensitivity when consuming hot or cold foods.

Latest Haryana CET Group C Updates

Last updated on Jun 13, 2025

->HSSC CET Application Deadline 2025 has been extended. The last date to apply online is 14th June till 11:59 PM.

->Earlier, Haryana CET Group C Notice for EWS Certificate was out. A valid format of EWS Certificate has been given in the Notice.

-> Haryana CET Group C Notification 2025 was out on 26th May 2025.

-> The HSSC CET Registration 2025 is open from 28th May to 14th June 2025.

-> The minimum educational qualification to apply for the Common Eligibility Test is 10+2/equivalent 

-> Candidate applying for CET should not be less than 18 years of age and not more than 42 years.

-> Aspirants must go through the Haryana CET Previous Years’ Papers to understand the need for the exam and prepare for the exam in the right direction. 

Hot Links: teen patti master real cash real teen patti teen patti real cash withdrawal teen patti joy vip