1. Abou-Rass M (1988) Long-term prognosis of intentional endodontics and internal bleaching of tetracycline-stained teeth. Compend Contin Educ Dent 19:1034–1038, 1040-2, 1044 passim
2. ADA Council on Scientific Affairs (2010) Tooth whitening/bleaching: treatment considerations for dentists and their patients. http://www.ada.org/~/media/ADA/About%20the%20ADA/Files/whitening_bleaching_treatment_considrations_for_patients_and_dentists.ashx. Accessed 14 Dec 2015
3. ADA Council on Scientific Affairs (2012) Statement on the safety and effectiveness of tooth whitening products. http://www.ada.org/en/about-the-ada/ada-positions-policies-and-statements/tooth-whitening-safety-and-effectiveness. Accessed 14 Dec 2015
4. ADA Seal Product Category (2015). http://www.ada.org/en/science-research/ada-seal-of-acceptance/ada-seal-products/product-category/?category=Whitening+Products%2c+Dentist+Dispensed%2fHome-Use. Accessed 19 Dec 2015
5. Al Shethri S, Matis BA, Cochran MA, Zekonis R, Stropes M (2003) A clinical evaluation of two in-office-bleaching products. Oper Dent 28:488–495