1Auschill TM, Schneiderdel ST, Hellwig E, et al. Randomized clinicaltrial of the efficacy, tolerability, and long-term color stability oftwo bleaching techniques: 18-month follow-up. QuintessenceInternational, 2012,43(8):683-694.
2Chren MM, Torres JS, Stuart SE, et al. Recurrence After Treatmentof Nonmelanoma Skin Cancer: A Prospective Cohort Study. Archivesof Dermatology, 2011, 147(5):540-506.
3Eriksson K, Horal P, Bo S, et al. Efficacy of tooth bleaching with andwithout light activation and its effect on the pulp temperature: an invitro study. Odontology, 2013, 101(1):67-74.