Multiple choice

Ledge formation in a root canal during shaping is frequently the result of

  1. careless instrumentation

  2. using EDTA as a chelating agent

  3. using sonic instruments

  4. using ultra sonic instruments
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ledge formation is usually caused by careless instrumentation such as, use of a large instrument out of sequence and insertion of the instrument short of the working length, or by use of a straight or inflexible instrument in a curved canal.

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