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Specifications ModelHX201LR135LAWorking length QuantityHX201LR135LBHX201UR135LA1,650 mm 20 piecesHX201UR135LB2,300 mm 5 pieces20 piecesCompatible channel2.8 maximum diameter2.6 clip lengthLongClip
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How to fill out working length

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How to fill out working length?

01
Measure the tooth: Use an endodontic file or a electronic apex locator to determine the length of the root canal. Insert the file or apex locator into the canal until it reaches the apex of the tooth, then mark that point on the file or locator.
02
Calculate the working length: Subtract 1 mm from the measured length to compensate for any potential instrument binding or blockage. This will give you the working length, which is the distance from the reference point (the marked point on the file or locator) to the point where root canal treatment should stop.
03
Confirm the working length: Use an X-ray or a periapical radiograph to verify the position of the file or locator within the root canal. The reference point should align with the apex of the tooth on the X-ray, confirming that the working length is accurate.

Who needs working length?

01
Dentists: Dentists who perform root canal treatments need working length measurements to ensure the success of their procedures. Correctly determining the working length helps dentists clean and shape the root canal accurately, leading to effective disinfection and optimal filling of the canal.
02
Endodontists: Endodontists, who specialize in root canal treatments, rely on working length measurements to perform their intricate procedures. The precise determination of the working length allows endodontists to navigate the complex root canal system, remove infected tissue, and place the root canal filling material in the right position.
03
Dental assistants: Dental assistants play an essential role in supporting dentists and endodontists during root canal procedures. They assist in taking X-rays or periapical radiographs to confirm the working length. Their assistance ensures that accurate measurements are obtained, contributing to the overall success of the root canal treatment.
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Working length is the distance from the reference point to the tip of the instrument during root canal treatment.
Dentists or endodontists performing root canal treatment are required to measure and record the working length.
Working length is filled out by using an electronic apex locator or by taking a radiograph to determine the distance to the tip of the instrument.
The purpose of working length is to accurately determine the length of the root canal in order to prevent overfilling or underfilling of the canal.
The measured working length, type of measurement device used, and the date of the measurement must be reported on the working length record.
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