The same instruments as in the bending test were evaluated. A self-made cyclic fatigue tester with a movable test stand (MH2-500N; IMADA, Aichi, Japan) and the X-Smart Plus endodontic motor (Dentsply Sirona) were used [23 (link)] (Figure 2 ). An artificial root canal made of stainless steel and designed with a 1.5 mm diameter, a 60° curvature, 3 mm radius of curvature, and the center of the curvature at 5 mm from the tip of the instrument was used [24 (link)]. The instruments were rotated as per the manufacturers’ recommendations (500 rpm, 1.5 N·cm in TRN; 400 rpm, 2.4 N·cm in HEDM; 300 rpm, 2.0 N·cm in PTN; and the WaveOne Gold setting in WOG), while moving the handpiece with an axial up-and-down motion of 2 mm amplitude at 300 mm/min. The canal was lubricated with silicon oil (KF-96-100CS, Shin-Etsu Chemical, Tokyo, Japan). The length of time to fracture was measured, and the number of cycles to failure (NCF) was determined as the number of revolutions (rpm) × time to fracture (seconds). All experiments were performed at room temperature.
X smart plus endodontic motor
Manufactured by Dentsply
Sourced in Japan
The X-Smart Plus endodontic motor is a dental lab equipment designed for endodontic procedures. It is used to facilitate the preparation and shaping of root canals during root canal treatments.
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Lab products found in correlation
3 protocols using x smart plus endodontic motor
1
Cyclic Fatigue Testing of Endodontic Files
2
Endodontic File Techniques Compared
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In total, 4 mL of distilled water was used for irrigation in each group during the preparation procedures. All files were used with the same X-Smart Plus endodontic motor (Dentsply Maillefer) according to the manufacturer's recommendations (Table 1).
Group 1: The OC files were used at 300 rpm speed and 2.5 N•cm torque settings. The path file was used for the initial preparation, and then the OC (25/0.06) files were used for the final preparation.
Group 2: The TRN files were used at 500 rpm speed and 1.5 N•cm torque settings. After the path file, the 20/0.04 (small) and 26/0.04 (prime) files were used for instrumentation.
Group 3: The PTN files were used at 300 rpm speed and 2 N•cm torque settings. The X1 file (17/0.04) was followed by the X2 file (25/0.06) in a brushing outstroke movement.
Group 1: The OC files were used at 300 rpm speed and 2.5 N•cm torque settings. The path file was used for the initial preparation, and then the OC (25/0.06) files were used for the final preparation.
Group 2: The TRN files were used at 500 rpm speed and 1.5 N•cm torque settings. After the path file, the 20/0.04 (small) and 26/0.04 (prime) files were used for instrumentation.
Group 3: The PTN files were used at 300 rpm speed and 2 N•cm torque settings. The X1 file (17/0.04) was followed by the X2 file (25/0.06) in a brushing outstroke movement.
3
Glide Path Preparation Techniques
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Glide path preparation was performed by a single operator in strict accordance with the manufacturer's recommendations for each system. All the rotary glide path files were operated by a 16:1 gear reduction hand piece powered by the X.Smart Plus endodontic motor (Dentsply Sirona). RC Prep (Premier, Plymouth Meeting, PA, USA) was used as a lubricating agent and 3% sodium hypochlorite (NaOCl) as canal irrigation.
Control group 1: An initial reproducible glide path was prepared using pre-curved size 10, 15 and 20 stainless steel K-Files (KF) (Dentsply Sirona) using a circumferential filing motion.
Control group 1: An initial reproducible glide path was prepared using pre-curved size 10, 15 and 20 stainless steel K-Files (KF) (Dentsply Sirona) using a circumferential filing motion.
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