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Soak your denture brush in a bleach/water solution. Remove the dentures from the vinegar. Brush the dentures with your denture brush. Rinse the dentures thoroughly. Pour out the vinegar solution.
You should soak your denture brush in a half bleach/half water solution once a week to prevent the growth of bacteria. Rinse the brush thoroughly before using it on your dentures. The next morning, bring the container over to the bathroom sink and fill it with water. Remove the dentures from the vinegar solution with your hands, making sure to keep the dentures over the water. This water acts as a cushion in case you drop the dentures while handling them. Now use the clean brush to rub off stains and calculus buildup on the dentures. Brushing the dentures after an overnight vinegar soak will also work off plaque, food particles, and bacteria.  If the stains don’t come off after the first overnight soak, repeated soaking should eventually get all the stains off. If stains won’t come off no matter how much you soak your dentures, talk to your dentist (this includes coffee stains, yellowing, any sort of stain). Scrub every surface of your false teeth, both inside and out, with either a denture brush or a toothbrush. Make sure the brush is wet when you do this, and that you use a light brushing stroke. After cleaning the surfaces of the dentures, it is time to rinse them off. Rinse the dentures repeatedly until both visible stains and tartar, as well as all traces of vinegar scent, are rinsed away. Rinsing helps wash away any debris and get the vinegar flavor off the dentures. After you are done soaking your dentures, pour out the solution. Do not re-use the vinegar solution as it now contains debris from stains, tartar, bacteria, and whatever else was on your dentures.