Sodium fluoride has replaced stannous fluoride and sodium monofluorophosphate as the most commonly used cavity-fighting agent in commercial toothpastes, although it didn't make its commercial debut until 1982. It works well with the kinds of silica abrasives (polishing agents) used in translucent gel toothpastes. Sodium fluoride is a close chemical relative of sodium chloride, ordinary table salt.
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