Emre ÖVSAY, Ayfer ATAV, Duygu MUSTAFA PAMUK
Medical Records - 2026;8(1):1705898-1705898
Aim: In endodontic treatment, nickel-titanium (NiTi) instruments, revolutionized root canal instrumentation owing to their superior flexibility, resistance to torsional fatigue, and shape memory. Among contemporary NiTi systems, ProTaper Ultimate (PU) (Dentsply Sirona, Ballaigues, Switzerland) and Fanta AF Rising (AF-R) (Fanta Dental, Shanghai, China) are widely utilized, yet differ considerably in terms of their metallurgical composition, design, and clinical performance. Although both systems are commonly used in clinical practice, there is a paucity of comparative data evaluating their canal centering ability, apical transportation, post-sterilization performance, and structural integrity after multiple uses. This study aimed to compare the shaping performance, apical transportation, and structural integrity of two thermally treated NiTi rotary file systems (AF-R and PU) after repeated use and sterilization cycles in standardized simulated curved canals.
