Browning 2004.

Methods	Title: safety and efficacy of a nightguard bleaching agent containing sodium fluoride and potassium nitrate Trial design: unknown
Participants	Participants: 22 Total number: 22 Number randomised: not clear Method of randomisation: not clear Method of allocation concealment: not clear Method of blinding: not clear Number evaluated: 22
Interventions	10% carbamide peroxide with potassium nitrate and sodium fluoride Placebo
Outcomes	Tooth whitening Sensitivity of teeth, gingiva, tongue and throat
Notes	Randomisation: not mentioned Sample size calculation: not reported Correspondence required: yes: authors have been mailed requesting for missing data Contact: Dr William Browning, wbrownin@mail.mcg.edu