Authors: Kwon SR Abstract The Evolution of Tooth Whitening It is through careful observations and efforts of many pioneers that enabled the dental profession to offer tooth whitening as a conservative alternative treatment, to whiten and lighten discolored teeth that otherwise had to be treated with veneers or full coverage restorations with concomitant removal of sound tooth structure. The innovative technique of nightguard vital bleaching using 10% carbamide peroxide in a custom made tray worn at night was first published by Haywood and Heymann in 1989.(1) This technique not only met the expectations of the new generation conscientious of outer appearance and thriving to improve their esthetic smile but also offered the possibility of whiter vital teeth at a lower cost, with much…
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