I had the zoom treatment last week and got the teeth whitening trays, that you put the gel in and leave in overnight. The dentist says to leave them on for 8 hours, but i was just wondering, if i leave them on longer.. would it be more effective? would it make my teeth whiter??
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not really. The gel is basically hydrogen peroxiode. It degrades into water and oxygen over time. The oxygen whitens your teeth and then escapes. As time goes on the gel just stops working because it eventually is all converted to water and the oxygen is gone into the air so you just have water gel on your teeth.
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