1. Biological properties of peroxide-containing tooth whiteners;Li;Food Chem Toxicol,1996
2. Nightguard vital bleaching;Haywood;Quintessence Int,1989
3. International Organization for Standardization. Dentistry: products for external tooth bleaching. ISO 28399. Geneva, Switzerland: ISO; 2011.
4. Textbook of Oral Pathology;Shafer,1983
5. Bleaching discolored teeth: internal and external;Walton,2002