Both systems are good but it depends upon the staining on teeth and the condition of teeth. This beam whitle is home bleach system in which the concentration of solution used is less so it takes more time but side effects like tooth sensitivity is less and moresoever you can do bleaching at will and it is less costly.
Dental office whitening procedure takes less time and it is costly. So it is individual choice. For more info on teeth whitening systems you can check this link in our website.... http://www.identalhub.com/articlecategory-tooth-whitening-28.aspx
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