Question 95 · LDEK · Access and canal preparation
On the basis of the following description and the figure shown below indicate the method of root canal preparation: 'This method consists of widening the apical part of the root canal to a specific size (in the figure shown below up to 25) with files inserted at the full working length. Further files are introduced into the root canal at increasingly shorter length'.

- A. balanced force technique.
- B. standardized.
- C. step-back.
- D. step-down.
- E. crown-down.
Hint
Note that the smallest file goes to full working length and each larger file is used progressively shorter.
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