1. Tooth caries
  2. Mottling of tooth
  3. Bending of bones
  4. Stiffening of joints
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1 Answers

Answer: Option 1

Fluoride deficiency is a disorder which may cause increased dental caries due to a lack of fluoride in the diet. Dental caries or tooth decay is the breakdown of dental tissues by the acidic products released by the "bacterial fermentation of dietary carbohydrates”.

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