McqMate
| Q. |
To reduce tooth decay most toothpastes contain a – |
| A. | Bromide |
| B. | Fluoride |
| C. | Iodide |
| D. | Chloride |
| Answer» B. Fluoride | |
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Explanation: Fluoride in toothpastes prevent tooth, decay from progressing and can even reverse, or stop, early tooth decay. It works by promoting a chemical reaction in tooth enamel that draws in replacement minerals including calcium. Fluoride incorporates itself into enamel weakened by acid attack, making the tooth more resistant to future acid attacks. |
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