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Objectives
To assess two professional tooth bleaching products: Philips Zoom WhiteSpeed (PZW) and Ultradent Opalescence Boost PF (UOB); and to assess bleaching maintenance after use of Philips Sonicare power toothbrush (SDC) or manual toothbrush (MTB).
Methods
There was a randomized, parallel clinical trial. Eligible subjects were 18‐75 years, with VITA Classical shade (VCS) of A3 on anterior teeth...
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