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How to use a fluoride rinse
Look for a fluoride rinse.
There is a difference between a fluoride rinse and a mouthwash. Some mouthwashes do contain fluoride, but you should purchase a fluoride rinse over a general mouthwash if you want the fluoride benefits.
Ask your dentist if there is a fluoride rinse that they recommend. They may also have fluoride rinse samples at their office.