Multiple choice

The pin used in pin restoration of a root canal treated tooth is:

  1. self-threaded pin

  2. cemented pin

  3. frictional pin

  4. All of the above.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pins are used in restoration to improve the retention form. Cemented pins are retained passively in a pin hole which is from 0.001 to 0.002 inches bigger in diameter than the pin. Hence, there is no stress during the pin placement and that is why this is indicated in RC treated teeth.

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