Assertion: bleach's effect | /r/RelatedTo | the peroxide concentration
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Source sentences:
text: Other side effects such as increased tooth sensitivity to temperature and gingival irritation have been reported when using a bleaching tray for vital bleaching.4,9-11,14,15 Peroxides may also affect the properties of composite restorative materials, but it is not known if this effect is related to the peroxide concentration or the pH of the bleaching product.