Answer :
If you rinse your mouth immediately after brushing, the concentrated fluoride in the remaining toothpaste will be washed away.
Spit out any excess toothpaste after brushing. Rinsing dilutes it, lowering its antimicrobial properties. Using fluoride-containing mouthwash can help prevent tooth decay, but don't use it right after brushing your teeth, as it will wash away the concentrated fluoride in the toothpaste left on your teeth.
Use a mouthwash at a different time, such as after lunch. Wait 30 minutes after using a fluoride mouthwash before eating or drinking. If you have gaps between your teeth, you can use interdental brushes or single-tufted brushes instead of flossing.
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