Schäfer, Edgar Cutting efficiency of five different types of rotary nickel-titanium instruments. [electronic resource] - Journal of endodontics Feb 2008 - 198-200 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0099-2399 Standard No.: 10.1016/j.joen.2007.10.009 doi Subjects--Topical Terms: Dental Alloys--chemistryEquipment DesignHumansMaterials TestingNickel--chemistryRoot Canal Preparation--instrumentationRotationSurface PropertiesTitanium--chemistry