90 degrees roots. Root canal treatment. August 25, 2015February 7, 2017casos, endodoncia, Liverpool, odontología Pablo Salmeron – Second lower molar with 90 degrees twisted roots. – Labomed microscope. – MTwo + Reciproc files. Dr. Pablo Salmerón. casos, endodoncia, endodontics, liverpool, Microscope, microscopioComments comments