Multiple choice

Radisectomy denotes

  1. the removal of one or more roots of multirooted tooth

  2. sectioning of the crown of a molar tooth with removal of half the crown and its root structure

  3. sectioning of the crown of a molar tooth with retention of both halves to be used after shaping

  4. sectioning of the crown of a molar tooth with retention of both halves to be used as two premolars
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A Correct answer
Explanation

Sometimes a multirooted tooth has an untreatable periodontal lesion on one or more of its roots, but the remaining roots are healthy. So, to avoid extraction of the whole tooth that compromised root is removed which is called radisection.

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