Multiple choice

During root canal therapy,

  1. compressed air must not be used for drying the root canal

  2. compressed air must be used for drying the root canal

  3. compressed air may be used for drying the root canal

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Compressed air must not be used for drying the root canal because tissue emphysema may result if an air bubble penetrates the periapical tissues. The emphysema may last as long as a week.

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