Cutting efficiency of endodontic instruments. Part III. Comparison of sonic and ultrasonic instrument systems

Comparison of Two Techniques for Assessing the Shaping Efficacy of Repeatedly Used Nickel-Titanium Rotary Instruments

“…Although the use of simulated root canals has the advantage of providing a standardized baseline canal form and reproducible conditions, several studies have described differences between the hardness and abrasion behavior of dentin and plastic (25,26). The use of an operator-driven instrument instead of a standardized computer-driven instrument has the disadvantage of introducing operator bias but the advantage of simulating clinical conditions wherein an operator can compensate for the shortcomings of the instrument by modifying digital pressure.…”

Evaluation of Cutting Efficiency of Ultrasonic Tips Used in Orthograde Endodontic Treatment

“…When evaluating the performance of endodontic instruments, the cutting efficiency can be defined as the capacity to remove intracanal dentin under a minimal expense of time and energy (17). To compare the cutting efficiency of different ultrasonic tips, the ultrasonic tips were given the same amount of work, namely 10 3 mm preparations, under the same working conditions in which the minimal power setting and automated calibrated balance was applied, and the length of time needed to complete each preparation was recorded.…”

Ultrasonics in Endodontics: A Review of the Literature

“…Numerous studies have analyzed the different characteristics of ultrasonically activated files, such as cutting efficiency (11,12,(297)(298)(299)(300)(301)(302), effect on bacteria (168,303,304), characteristics of root canal preparation (153,(305)(306)(307)(308)(309)(310)(311)(312)(313), mechanical and technical features of files and handpieces (314 -318), and clinical implications (319 -323).…”