Question 315 · LDEK · Endodontic instruments
What is the taper of hand endodontic instruments like K-files and reamers?
- A. file diameters increase at a rate of 0.02 mm per running mm of their length.
- B. they have variable .02 taper throughout one file.
- C. they have constant .04 taper throughout one file.
- D. diameter increases at a rate of 0.02, 0.04 or 0.06 mm per each mm of the file length depending on the size of the file.
- E. it is a standard 2%, 4%, 6% taper depending on the size of the file.
Hint
Recall the ISO standard for hand files: how much the diameter grows with each millimetre of the working part.
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Conservative dentistry
- Indicate the true statement concerning tests assessing the state of dental pulp and periapical tissues:
- In a 19-year-old patient clinical examination revealed generalized attrition of the teeth. Tooth crowns had a bulbous shape and were amber-brown. On…
- In tooth 11, B-type resorption (by Jeanneret’s classification) - an internal root resorption without perforation was found. Which of the following…
- Where can you find root canals orifices shown in the pictures below?
- Indicate the true statements concerning root canal shaping with crown-down method:
- Warm thermal pulp testing is usually applied with heated GP (gutta-percha). Indicate the correct preparation of the tooth surface to perform this…