1. Odioso LL, Gibb RD, Gerlach RW. Impact of demographic, behavioural, and dental care utilization parameters on tooth colour and personal satisfaction. Compend Contin Educ Dent. 2000;S35–41 (quiz S43).
2. Akarslan ZZ, Sadik B, Erten H, Karabulut E. Dental esthetic satisfaction, received and desired dental treatments for improvement of esthetics. Indian J Dent Res. 2009;20:195–200.
3. Fernández E, Bersezio C, Bottner J, et al. Longevity, esthetic perception, and psychosocial impact of teeth bleaching by low (6%) hydrogen peroxide concentration for in-office treatment: a randomized clinical trial. Oper Dent. 2017;42:41–5.
4. Westland S, Luo W, Ellwood R, Brunton P, Brunton P, Pretty I. Colour assessment in dentistry. Ann MBMVA. 2007;4:1–10.
5. CIE (Commission Internationale de l’Eclairege). Lights as a true visual quantity: principle of measurements. Bulletin CIE 1978:Pub.No.41. Vienna: Bureau Central de la CIE;1978.