The tools are sharpened from round wire, thanks to which they acquire a spiral shape with cutting edges. This design is characterized by high cutting performance and, at the same time, fragility. Therefore, extreme caution must be observed during operation in order to prevent its damage and the formation of asymmetric expansion of the channel walls.
According to the manufacturer's recommendations, only sawing movements in the vertical plane - up and down - can be performed with the help of 25 mm files. It is prohibited to use it to perform rotational movements in the dental canal.
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