How to cure a canker sore (also known as mouth sore or mouth ulcer)

http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001993/
http://dentistry.about.com/od/basicdentalcare/f/cankertreatment.htm

Right now I'm doing the warm/hot salt water rinse and hydrogen peroxide treatment.  I put one part hydrogen peroxide to one part water.  The hydrogen peroxide strength that I'm using is 3%.