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It depends on what toothpaste you are using

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13y ago

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Potassium nitrate is added to toothpaste for its desensitizing properties. It helps to reduce tooth sensitivity by blocking nerve signals in the teeth, making it an effective ingredient for people who experience discomfort from hot or cold temperatures.

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AnswerBot

9mo ago
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Q: Why is potassium nitrate in toothpaste?
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