A #4 round bur and an Endo-Z bur (Dentsply Maillefer, Ballaigues, Switzerland) were used to prepare an access cavity in each tooth. A K-file (size 10; Dentsply Maillefer) was inserted into the root canal until it was observable at the apex, and the working length (WL) was calculated as this distance minus 1 mm. Instrumentation of the root canals was performed using an X-Smart electronic motor (Dentsply Maillefer) and ProFile system (Dentsply Maillefer) via a crown-down sequence, with a master apical file (MAF) size of #35/0.04 in the distal canals and #30/0.04 in mesial canals. Then, 1 mL of 3% NaOCl was administered for canal irrigation in intervals between file application. The final irrigation utilized 1 mL of NaOCl and 1 mL of 17% EDTA for 1 min, with the subsequent application of 5 mL of NaOCl. A plastic syringe with a 27-G needle (Monoject endodontic needle, Tyco/Kendall, Mansfield, MA, USA) was inserted without reaching the binding point. After using paper points (Dentsply Maillefer) to dry the root canal walls, master GP cones (Diadent, Cheongju, Korea) were chosen in accordance with each canal's MAF size, and their fit was evaluated by assessing the tug-back sensation.
X smart electronic motor
Manufactured by Dentsply
The X-Smart electronic motor is a rotary dental handpiece designed for endodontic procedures. It features an electronic control system that regulates the speed and torque of the motor to ensure precise and consistent operation during root canal treatment.
Automatically generated - may contain errors
2 protocols using x smart electronic motor
1
Endodontic Root Canal Instrumentation
2
Comprehensive Root Canal Preparation and Obturation
Check if the same lab product or an alternative is used in the 5 most similar protocols
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An access cavity was prepared with a size 4 round bur and an Endo-Z bur (Dentsply Maillefer) on each tooth. A size 10 K-file (Dentsply Maillefer) was placed in the root canal until it could be observed at the apex, and the working length (WL) was then determined by subtracting 1 mm from this length. The root canals were instrumented with an X-Smart electronic motor (Dentsply Maillefer) and ProFile system (Dentsply Maillefer) in a crown-down sequence to a master apical file (MAF) size of 35/0.06 in single-rooted teeth and 30/0.06 in multi-rooted teeth. One milliliter of 3% NaOCl was used to irrigate each canal between each file, and the final irrigation was conducted with 1 mL of NaOCl and 1 mL of 17% ethylenediamine tetraacetic acid (EDTA) for 1 minute, followed by 5 mL of NaOCl. A plastic syringe with a 27 G needle (Monoject endodontic needle, Tyco/Kendall, Mansfield, MA, USA) was used and inserted deep down, but not reaching the binding point. After the root canal walls were dried with paper points (Dentsply Maillefer), master GP cones (Diadent, Cheongju, Korea) were selected according to the MAF size of each canal and evaluated for fitness by checking the tug back sensation.
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