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

A Novel Methodology to Evaluate the Use of an Ultrasonic Tip

“…Lin et al (21) evaluated the cutting efficiency of US tips by measuring the time required to prepare a 3-mm-deep preparation. Therefore, there was a benchmark or defined parameter to evaluate efficiency.…”

“…The few investigations that have been published on the efficiency of US tips differ in many aspects of their reported materials and methods (6)(7)(8)(9)21). Past studies have used different testing apparatuses to evaluate US tips such as a double pan balance (8,9,21) or a universal tester (6,7).…”

“…Past studies have used different testing apparatuses to evaluate US tips such as a double pan balance (8,9,21) or a universal tester (6,7). Ultrasonic tips have been evaluated on their cutting efficacy in dentin (6)(7)(8)(9) or dental stone (21) by evaluating the change in weight between instrumentation cycles.…”

“…Ultrasonic tips have been evaluated on their cutting efficacy in dentin (6)(7)(8)(9) or dental stone (21) by evaluating the change in weight between instrumentation cycles. Forces in grams applied to US tips have varied and include 15 g (6, 7), 30 g (21), 40 g (9), and 60 g (8). US instrumentation times have varied between studies and include 60-second cycles for a total of 3 minutes (8), 30-second cycles for a total of 90 seconds (9), 20-second cycles for a total of 4 minutes (6), and 20-second cycles for a total of 30 minutes (7).…”

“…US instrumentation times have varied between studies and include 60-second cycles for a total of 3 minutes (8), 30-second cycles for a total of 90 seconds (9), 20-second cycles for a total of 4 minutes (6), and 20-second cycles for a total of 30 minutes (7). One study evaluated the cutting efficacy of US tips by measuring the time required to prepare a 3-mm-deep preparation (21). Most of the previous investigations have used a static model.…”