Rubber dam: Prevents entry of humidity into a cavity, In particular previous to insertion of silicate fillings, And through root canal therapy. Lentulo spiral is a dental instrument utilized to adequately insert root canal sealer and cement in the course of a root canal, and endodontic therapy Also referred to https://telegra.ph/Sannhakhoa-d%E1%BB%A5ng-c%E1%BB%A5-nha-khoa--Top-Quality-Dental-Solutions-03-28