February 2010, Volume 6, Issue 2
Published by AEGIS Communications
TiLOS™ AET System
Bringing together the metal best-suited for files in a specific area of the root canal.
Ultradent has developed a new system, called the Endo-Eze® TiLOS™ Anatomic Endodontic Technology (AET) System (Figure 1 and Figure 2). The TiLOS System consists of three stainless-steel shaping files—purple, white, and yellow (similar to the current AET system) with the respective tip diameters of the active portion (0.10, 0.13, 0.13 mm) and respective tapers (0.020, 0.030, and 0.040 mm/mm); two hand K-type stainless steel files, #15 and #20; and three NiTi transitional files with an active portion initial diameter of 0.25 mm and tapers of 0.08, 0.04, and 0.02.
The AET TiLOS oscillating (reciprocating) stainless steel shaping files enlarge and prepare the coronal and middle third, creating an anatomically correct glide path for the TiLOS NiTi transitional files to reach the apical areas of the root canal. The shaping files simultaneously negotiate the root canal and eliminate all interferences, while at the same time creating a straight-line access of the first two thirds of the root canal, regardless of diameter, morphology, or length.
TiLOS’ hybridization also includes a change from rotational motion to oscillating (reciprocating) motion of the TiLOS NiTi transitional files. The AET handpiece oscillates (reciprocates) the files 30° in each direction, allowing preparation with the same effectiveness as when rotated but with a less aggressive movement, meaning more control and less file separation in the fragile apical area. This hybridization (NiTi oscillating/reciprocating) allows NiTi instruments to be used safely in any portion of the root canal and lessens the risk of tip fracture or file separation, and the 30° oscillation (reciprocation) greatly reduces the risk of fractures due to torsion and flexural stresses. Before using any NiTi instruments, the cervical and middle interference should be eliminated or reduced with AET stainless steel shaping.
The coronal and middle thirds allow a straight glide path, the NiTi transitional files can access the apical third without interferences, stress, fracture, and deformations, making instrumentation safer and more effective. This also facilitates thorough irrigation, subsequent cleaning, and the placement of gutta-percha with larger diameters, if desired.
The sequence presented in Figure 1 indicates the use of a #15 K-file hand instrument for canal negotiation and determination of a working length (X-ray and/or electronic apex locator). After determining the working length, instrumentation is initiated. In cases of pulp necrosis, the negotiation should be made by third, always thoroughly irrigating the root canal with sodium hypochlorite with each file.
Once the canal is negotiated and the A.I. determined, mechanical reciprocating instrumentation begins using the Endo-Eze AET handpiece. The technique for using the reciprocating shaping files is a circular motion or a forceful upward brushing stroke against the canal walls. Begin with the purple shaping file to 3 mm short of the working length. Recapitulate with the #15 K-file followed by the white shaping file, also 3 mm short of the working length. Recapitulate and follow with the yellow shaping file to 6 mm short of the working length. Recapitulate using the #15 K-file.
Then a #20 K-file is used to the working length as verified with an X-ray and/or electronic apex locator, followed by the white shaping file a second time to the working length. Irrigate and recapitulate with the #20 K-file. The apical third is prepared using the NiTi transitional files in the AET handpiece. Use the #25 NiTi transitional files with tapers 0.08, 0.04, and 0.02 mm/mm, respectively, with no pressure in a crown-down technique until the working length is reached. Depending on the anatomy, this result can occur with file 0.08 or 0.04 or in calcified and curved canals with the #25, 0.02 NiTi file.
With the A.I. as a reference, the final apical preparation is completed with NiTi hand files up to four to five sizes beyond the A.I. Obturation is accomplished using Ultradent’s Apically Delivered Obturation System in a simple and predictable manner.
For more information, contact:
Ultradent Products, Inc.
The preceding material was provided by the manufacturer. The statements and opinions contained therein are solely those of the manufacturer and not of the editors, publisher, or the Editorial Board of Inside Dentistry. The preceding is not a warranty, endorsement, or approval for the aforementioned products or services or their effectiveness, quality, or safety on the part of Inside Dentistry or AEGIS Communications. The publisher disclaims responsibility for any injury to persons or property resulting from any ideas or products referred to in the preceding material.NEW ENDO SYSTEM The TiLOS handpieces.