خطوات تبييض الأسنان وتفاصيل أخرى ،،،، محمد الصفي
Drs. Helm, Nejad, and Stanley show how to properly use and maintain custom bleaching trays at your home. Custom bleaching trays worn overnight using 10% cabamide has show to be the safest and most effective teeth whitening. Learn more about safe & effective teeth whitening here: http://www.beverlyhillsladentist.com/blog/safe-effective-teeth-whitening/
