Glide path in sixty training blocks was established till #20 hand files using NITIFLEX® (Dentsply Maillefer, Ballaigues, Switzerland). Glyde™ File Prep (Dentsply Maillefer, Ballaigues, Switzerland) was used as a lubricant before the utilization of each instrument, and saline was used for irrigation during preparation. A SAF 1.5 mm file (ReDent-Nova, Israel) was introduced into the canal to the apex, using an RDT3 handpiece head (ReDent-Nova, Israel) with a torque control motor (X-smart Plus™, Dentsply Maillefer, Ballaigues, Switzerland,) at a frequency of 83.3 Hz (5000 movements per minute) with an amplitude of 0.4 mm. It was used for 4 min in a pecking motion according to manufacturers’ instructions. The SAF was connected to a VATEA System Irrigator (ReDent-Nova, Israel) that pumped saline at the rate of 5 mL/min in a continuous flow. A total of 20 mL saline was used for each root. No accurate final diameter or taper of the preparation could be assumed because the SAF has no specific size or taper.
Nitiflex
Manufactured by Dentsply
Sourced in Switzerland
NITIFLEX® is a dental laboratory equipment product manufactured by Dentsply. It is designed for the processing of dental impressions and models. The core function of NITIFLEX® is to provide a flexible and durable surface for the manipulation and handling of dental materials during the laboratory workflow.
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Lab products found in correlation
2 protocols using nitiflex
1
Glide Path Establishment Using SAF
2
Fatigue Resistance of Endodontic Files
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The sample size was calculated based on a comparative study of the application of thermal treatments on the resistance to fatigue fracture in endodontic files23 (link). The software used was PS (Power and Sample Size Calculation Software Version 3.1.2, Vanderbilt University, Nashville, TN, USA), and the number of cycles to fracture (NCF) was used as the result. Considering an alpha (α) value of 0.05 and a beta (β) value of 0.2, that is, a power of 80% and a level of significance of 5%, the estimated sample size was 20 files per group.
Forty conventional NiTi manual files NITIFLEX (Dentsply Maillefer, Ballaigues, Switzerland), number 30 (that is, a diameter at the tip of 0.3 mm, with a taper continue of 0.02 mm each mm, and a length of 25 mm) were used. They were divided into two groups (n = 20). Group 1 was the control group without SP, and group 2 was composed of files submitted to SP.
Forty conventional NiTi manual files NITIFLEX (Dentsply Maillefer, Ballaigues, Switzerland), number 30 (that is, a diameter at the tip of 0.3 mm, with a taper continue of 0.02 mm each mm, and a length of 25 mm) were used. They were divided into two groups (n = 20). Group 1 was the control group without SP, and group 2 was composed of files submitted to SP.
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