Hi.. I am using colloidal silver daily to wash the area and then I take orally. I have a root canal gone bad, and dentist said there is nothing they can do , other than surgery, and they are debating on that, so I have been using colloidal silver as a wash in the tooth,around gum, and leaving it in that area for a long time, and the sensitivity has disappeared 95% and I am still working on it. Diane M
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