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A comment on Dentists reveal new tooth decay treatment. Parent comment

Re:Dentists reveal new tooth decay treatment by etcet on Monday November 09, 2015 @06:51PM (#10536671)
They do hurt you but they don't use a drill at first. I had a root canal done recently and the dentist briefly touched a piece of dry ice to my tooth. He did to a an undamaged tooth first, I guess to see if I could feel pain?
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Re:Dentists reveal new tooth decay treatment by pnathan on Monday November 09, 2015 @07:25PM (#10536821)
Correct. The doc did it to me.

I had a very dead tooth, and a very alive tooth. Worked like a charm.

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