1. Nightguard vital bleaching;Haywood;Quintessence Int,1989
2. Teaching nightguard bleaching and other tooth-whitening procedures in North American Dental Schools;Frazier;Journal of Dental Education,2000
3. Intracoronal bleaching of non-vital teeth;Greenwall,2001
4. Chemical, optical, and phisiologic mechanism of bleaching products: a review;Feinman;PP&A,1991
5. The safety and efficacy of tooth bleaching: a review of the literature 1988–1990;Yarborough;Compend Contin Educ Dent,1990