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I 11 case study _ tooth whitening I cosmeticdentistry 1_2009 important factor that influences the efficacy of tooth whitening. A combination of home and power whitening gives the advantage of faster whitening with the benefit of monitoring and motivating the patient throughout the treatment. _Conclusion Tooth whitening is a non-invasive, economical, and highly effective aesthetic treatment for creating a bright smile. It should always be considered in aes- thetic treatment planning to provide patients with a beautiful smile, giving them self-assurance and bringingthemhappiness._ _References 1. Chu SJ et al.Fundamentals of color.Quintessence Publishing Co.Inc.,2004. 2. Goldstein RE, Garber DA. Complete Dental Bleaching. Quint- essence Publishing Co.Inc.,1995. 3. Haywood VB. Tooth Whitening Indications and Outcomes of NightguardVital Bleaching.Quintessence Publishing Co.Inc., 2007. 4. KwonSR,KoSH,GreenwallL.ToothWhiteninginEstheticDen- tistry.Quintessence Publishing Co.Inc.,2009. Fig. 7_Synchronisation of the same tooth before and after whitening to measure the shade change. Dr So-Ran Kwon, Foun- der and President of the Korean Bleaching Society, lectures internationally on tooth whitening. She has written many articles and books on tooth whitening, including Tooth Whitening in Esthetic Dentistry pub- lished by Quintessence. She is currently a visiting professor at Yonsei University and maintains a private practice in Seoul, Korea. Dr Kwon can be contacted at smileksr@hotmail.com. cosmeticdentistry _author info Fig. 7 AD