Dr. Taha Özyürek is a graduate of Atatürk University, Faculty of Dentistry where he received his DDS degree. He attended Endodontics Program of Graduate Study offered by Institute of Health Sciences at Ondokuz Mayıs University and graduated with PhD degree at Endodontics. He is a resident at the Department of Endodontics, Faculty of Dentistry at Ondokuz Mayıs University, Samsun, Turkey. His areas of interests are; nickel titanium file’s physical and chemical properties, endodontic microsurgery and retreatment. Dr. Taha Özyürek has numerous published original research articles especially about the mechanical properties of nickel titanium files in national and international peer-reviewed and indexed journals. He is working as a reviewer for many indexed international journals. He is an active member of Turkish Dental Association (TDB), Turkish Endodontic Society (TED), American Association of Endodontists (AAE) and European Society of Endodontology (ESE).

Chaos of NiTi Systems

The use of rotary nickel-titanium (NiTi) endodontic instruments has expanded dramatically since the first attempts at manufacturing endodontic files from super elastic alloy. Rotary NiTi instruments became first choose in modern root canal instrumentation. New cross-section designs, variable tapers and different preparation techniques were introduced and adopted very quickly to the NiTi instrumentation. Also new kinematics adopted to the NiTi files such as reciprocation and adaptive motion to make the root canal preparation efficiently, simply and safely. There are lots of brand of NiTi files that available in the market. Today practitioners want to know which NiTi rotary system is simple to use, reliable and allows predictable results. In this lecture the mechanical and physical properties of the novel NiTi file systems and the benefit of this innovations on root canal preparation will be discussed.