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ISO normed hand files have a standardised taper of 2% that equates to 0.02mm increase in diameter per mm of file. This standardised taper allows you to calculate the diameter of any given stainless steel file at any given point. Where the 2% taper means that there is an increase in diameter by 0.02mm every 1mm of file (moved in a coronal ...
Nickel titanium rotary files usually have a higher taper compared to the taper of standard traditional hand files which is 0.02 mm/mm (ISO taper of endodontic files, taper 0.02 mm/mm indicates 20 microns increase in diameter for every 1 mm gain in the length of a file). Their taper commonly ranges from 0.02 to 0.12 mm/mm. Different systems are ...
The risk of endodontic files fracturing can be minimised by: [43] Ensuring access cavity allows straight-line introduction of files into canals; Creating a glide path before use of larger taper NiTi files; Using rotary instruments at the manufacturer's recommended speed and torque setting; Adopting a single-use file policy to prevent overuse of ...
Root canal is also a colloquial term for a dental operation, endodontic therapy, wherein the pulp is cleaned out, the space disinfected and then filled. When rotary nickel titanium (NiTi) files are used in canals with flat-oval or tear-shaped cross sections, a circular bore is created due to the rotational action of the metal.
A Lentulo spiral. The notches at left allow it to fit into a slow-speed latch handpiece. A Lentulo spiral is a dental instrument used to properly distribute root canal sealer and cement evenly throughout the root canal system, as when performing endodontic therapy or a post and core cementation.
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