Take-home strips more effective than in-office whitening?

A take-home whitening strip regimen may be as effective -- if not more so -- than a professional chairside, light-assisted whitening procedure, according to research to be presented next month at the International Association for Dental Research (IADR) meeting in Barcelona, Spain.

The study authors, which included researchers from Procter & Gamble, evaluated the whitening performance of a take-home whitening strip regimen and a light-enhanced, in-office teeth-whitening procedure.

They conducted a two-treatment, parallel-design, examiner-blinded controlled clinical trial using 44 adult volunteers with no history of previous bleaching and a Vita shade of A2 or darker on maxillary anterior teeth. The study participants were randomly assigned to one of two treatment groups.

Professional treatment involved light-assisted application of a 25% hydrogen peroxide gel (Zoom! Advanced Power Chair Side Whitening System). The take-home whitening process involved daily 30-minute applications of 9.5% hydrogen peroxide high-adhesion whitening strips (Crest Whitestrips Advanced Seal) for 20 days.

"Use of a take-home whitening strip regimen resulted in similar tooth yellowness reduction and greater lightness improvement as that of a professional chair side light-assisted whitening procedure," the authors concluded.

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