Endostar E3 Azure Small :

is not a separate rotary system. This is an extension of the Endostar E3 Azure Basic for use with very narrow and curved canals. The canal should be first shaped with the use of Endostar E3 Azure Basic files or Endostar E3 Basic.

• 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- Recommended Torque:

• standard torque(Ncm): 1.2
• Advanced torque (Ncm): 2.1

Files should be used with motor speed at 300 rpm.Don't exceed the upper torque limit.

4- Clinical instructions for use (Endostar E3 Azure Small ):

• Prepare the cavity: Locate the orifices and specify the working length of the canal. Next, prepare the canal with hand instruments as specified in the Endostar E3 Azure Basic clinical instruction.
• Preparation of the upper part of the root canal : Shape the canal orifice with the use of the Endostar E3 Azure Basic No. 1 (08/30) file until delicate resistance is detectable. Do not apply excessive force to the instrument especially in highly curved canals.
• Preparation of the middle portion of the root canal : Begin to work with file No. 2 from the Endostar E3 Azure Basic (06/25). Perform up and down movements. Work to maximum of 1/2 of working length. Inspect the working length with the size 15 hand file and apex locator. Next, witl-the use of file No. 3 which is part of the E3 Azure Basic (04/30), try to go a few millimeters deeper down the canal. If the file cannot go deeper down the canal, do not force it. Finish the preparation with the Endostar E3 Azure Basic and continue with the Endostar E3 Azure Small.
• Shaping of the apical part of the root canal: With the use of file No. 1 from the Endostar E3 Azure Small (06/20) shape the canal a few millimeters down. Do not force the instrument down the canal. Take file No. 2 (04/25) and continue to shape the canal. Stop working 2 mm before reaching full working length. Use file No. 3 (04/20) until full working length is reached. File No. 3 (04/20) allows shaping even of very narrow and extremely curved canals. Next, go back to file No. 2 (04/25) and use it until full working length is reached.
• Widening the root canal: After checking the apical width with the NiTi file, consider widening the canal with file No. 3, which is part of the Endostar E3Azure Basic (04/30) set. Skip this step in extremely curved canals and finish shaping at size 04/25.