Features:

• The handpiece should run at 300 rpms. The operating speed of the handpiece should be constant throughout the shaping process.
• Do not apply excessive force. An up-and-down motion should be used when operating the files.
• Shaping time should be as short as possible.
• Always use a lubricating agent when shaping the canal.
• The files are very sharp and should be used very carefully, with little force and without excessive "thrusting".
• Operate the instruments and handpieces according to their operating instructions (especially torque settings and speed).
• Use the type and amount of instruments that is truly needed in a given clinical situation.
• Control the number of times that the instrument was used.
• Before using the instruments, be sure to run them outside the oral cavity and check for deformations, scratches and cracks.
• Dispose as medical waste.
• It is a natural phenomenon that Endostar E3 Azure bent files do not back to stright shape at room temperature, as is the case with files made of unmodified NiTi alloys.
• Endostar E3 Azure files can be pre-bent, such as steel files, before inserting into the root canal.
• It is also acceptable to insert bent file into the canal and then start the micromotor, which simplify access to the canals in the molars.

2. Recommended movements:

All instruments have been designed and manufactured in such a way that they can be used in three types of movements depending on the individual preferences of the dentist, the diagnosis of a given case and the contra-angle handpiece available in dental office.

• Rotary movement - the instrument rotates continuously 360° in a clockwise direction (CW - Clock Wise).
• Reciprocal movement - the instrument performs alternating movements: clockwise (CW) and anti-clockwise (CCW - Counter Clock Wise) except that the CW movement angle must be larger than CCW angle, e.g. 90° CW and 30° CCW. It is recommended that the rotation in the CW direction should be in the range of 90° to 270° and in the CCW direction in the range 30° to 90°, so that the net rotation in the CW direction in each cycle is in the range of 60° to 240°, which means a full 360 CW rotation (according to clockwise) after 1.5 to 6 cycles.
• Complex movement - it is a kind of movement that connects the rotary movement with the reciprocal movement. After inserting file into the root canal, the file performs a rotary motion, and if the resistance for the file in the canal is too high, the rotary motion changes to a reciprocating movement, when the resistance decreases, the rotary motion returns. An example of this is OTR movement.

3- Clinical instructions for use ( E3 azure basic):

• Cavity Preparation: Prepare the cavity.Use a rubber dam.
• Location of canals: Locate all canal orifices.Lubricate the canals.
• Specifying the working length of the canal : Specify the working length of the canal using your method of choice .
• Preparing the canal with hand instruments : Continue to shape the root canal with hand files up to size 20. This way, you will create a glide path for rotary instruments. This will also reduce the risk of breaking the rotary file.
• Preparation of the upper part of the root canal : Shape the canal orifice with the Endostar E3 Azrue Basic File No. 1 (08/30) until you reach a maximum of 1/2 of the total canal depth. Do not use this file when the canal is highly curved (in such cases use the Endostar E3 Azure Small).
• Preparation of the middle part of the root canal : Begin to work with file No. 2(06/25). Perform up-and-down movements. Shape the canal up to 2/3 of the working length. Inspect the working length with the size 15 hand file and apex locator. Next, insert file No. 2 at full working length.
• Shaping of the apical part of the root canal : Use file No. 3 (04/30) to widen the apical portion of the canal until full working length is reached. Confirm that full working length was reached with hand file size 15 and apex locator. Next, finish work with a nickel-titanium hand file size 30. Check if the file can be inserted at full working length without obstructions, and if wedging can be felt. If a wider preparation of the apex is needed, continue to work with larger hand instruments size 35, 40 etc. or consider using the Endostar E3 Azure Big.