How to maintain endodontic file?

If the endodontic file is damaged during treatment, it may cause very undesirable consequences. So what are the factors that affect the damage of the endodontic file? How should the endodontic file be used and maintained correctly?

Factors affecting the damage of endodontic files

The removal technique of endodontic file damage

How to maintain the endodontic file?

Factors affecting the damage of endodontic files

The success of retrieval depends on the anatomy of the root canal, the type of metal made (stainless steel files are often easier to remove), the position of the fragments in the root canal, the plane of the root canal bend, the length of the separated fragments, and the root canal The diameter of itself. Generally, if one-third of the total length of the blockage can be exposed, it can usually be removed. It is usually possible to remove instruments located in the straight part of the root canal. More challenging are the separately placed instruments, which partially surround the curvature of the tube, but if a straight channel can be established within its maximum coronal range, it can usually be removed. If the broken instrument segment is perpendicular to the curvature of the root canal and a safe passage cannot be achieved, it usually cannot be removed.

The removal technique of endodontic file damage

1. Before starting the retrieval work, special attention should be paid to the preoperative X-ray and working film to better understand the thickness of the dentin wall. Coronary artery access is the first step in removing damaged instruments. A straight path should be formed on all root canal openings, and special attention should be paid to open the axial wall, which should be similar to the root canal containing the damaged instrument.

2. The root access is the second step required to successfully remove the crushing device. The hand file is applied to the coronary artery blockage in order from small to large to leave enough space to safely introduce the Gates Drill. They are used like "brushes" to create a smoothly flowing funnel that is largest at the orifice and narrowest at the obstruction.

3. When the shape of the root canal from the crown to the broken instrument is optimized, the bypass technique can be used to remove the broken file segment. Before performing any radiological eradication, it is wise to place cotton pellets on other exposed orifices (if any) to prevent debris from entering another pipe system again. In combination with lubricant, use a pre-bent No. 10 stainless steel file to bypass the broken instrument.

4. Sometimes, clinicians may create excellent coronal and root passages, bypassing broken instruments, but unable to retrieve broken instruments. In this case, the root canal is cleaned and shaped, and then the segment is incorporated into the occlusion. If the broken instrument cannot be bypassed, ultrasonic technology can be used to remove the broken document section. Dental microscopes allow clinicians to see most broken instruments, while ultrasonic instruments greatly increase the potential and safety of removing broken instruments.

How to maintain the endodontic file?

1. Remove the triangle teeth of the cervical spine before hand file exploration.

2. A lot of flushing is performed at every stage of the operation, especially flushing debris that enters the channel before inserting the Niti taper file.

3. Preoperative assessment of estimated and expected true working length, final taper and main apical diameter.

4. Curved files pass through curved canals more efficiently than curved files. , Generally, in a canal that has been guided or transported, it is beneficial to place a sharp bend of 3 to 5 mm on the tip of the file. It is common practice and no exception to insert curved hand files multiple times to bypass blocked and transported canals (especially ledges). Or, if no transportation is taking place (the canal is unreachable or easy to negotiate), the clinician can bend the file on the finger without EndoBender.

5. Before using the RNT file, always negotiate the canal with the hand file. Even if clinicians use RNT taxi path creators (PathFile, Dentsply Tulsa or PreShapers, SpecializedEndo), they should first manually negotiate the canal to ensure smoothness. The preference of the clinician determines whether the glide path should be created by manual file or RNT file.

6. hand files are single-use disposable tools because they quickly become dull during clinical function.

7. The use of Niti taper files is a matter of personal preference. Although some clinicians want the flexibility and shape memory of nickel-titanium hand files, others do not. It should be noted that Nitinol hand files can provide a controlled memory function. This is a proprietary thermomechanical process in which Niti taper files lose their shape memory capabilities but still maintain flexibility.

8. Regardless of the method used to achieve these principles, the principles of root canal preparation must be followed (ie, hand root canal expansion and/or RNT expansion or a combination of these methods).

To Knowing how to use and maintain the endodontic file can effectively improve the quality of treatment, If you are looking for a high-quality endodontic file at a reasonable price, Osakadent Co.,Ltd. will provide you with the best products.