I've had receding gums for several years. Dr Hrisula was the first dentist to suggest a filling material over the exposed roots on several of the biggest recessions. Now, not only do I have less chance of cavities, I immediately lost the hypersensitivity to brushing, flossing, and cold on the worst tooth. Great suggestion! Four stars because the process took a full hour; I was hoping for a little quicker; the estimate was for a little less time.