Used for more than a century, hydrogen peroxide (H 2O 2 or HP) is the most commonly used ingredient for teeth whitening. 3,4 However, the main difference between the three treatments is the amount of hydrogen peroxide present in the whitening material. 2 Many clinicians recommend in-office whitening to ensure patients receive professional guidance, gingival tissue protection, and more immediate results. 1 Tooth-whitening materials are categorized as professionally administered in-office treatments, professionally dispensed at-home treatments, or self-administered over-the-counter (OTC) whitening products. With an increasing emphasis on esthetics in recent years, tooth whitening has become a popular dental procedure and dental practice service. Only two subjects reported any sensitivity, thereby demonstrating the effectiveness of a combined whitening system, including both chairside and take-home whitening, and a sensitivity prevention protocol. Subjects achieved, on average, documented change of 11.1 shades. All subjects received one session of in-office whitening (Philips Zoom WhiteSpeed), 3 weeks of at-home tray whitening (Zoom NiteWhite), and the option of a second WhiteSpeed treatment. This study examined nine subjects with baseline shades of A3.5 to A4 on four to six of their maxillary anterior teeth with the VITA Classical (VC) shade guide. As teeth whitening increases in popularity, dental professionals are challenged to select the proper materials and technique to create esthetically whitened smiles for their patients.
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