INBDE (Integrated National Board Dental Examination) Practice Exam

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Which material sedates periradicular nerve tissues post-op?

chloroform
EDTA
eugenol
bleach

The correct answer is: eugenol

Eugenol is the correct answer because it is commonly used as a sedative dressing for relieving pain in periradicular tissues after root canal treatment. Eugenol has both analgesic and sedative properties, making it an effective choice to soothe irritated nerve tissues and reduce post-operative discomfort. In contrast, the other options are incorrect: - Chloroform is not typically used to sedate periradicular nerve tissues post-operatively in endodontic procedures. - EDTA (ethylenediaminetetraacetic acid) is a chelating agent used for smear layer removal during root canal treatment, but it does not serve as a sedative for nerve tissues. - Bleach (sodium hypochlorite) is an irrigant commonly used during root canal treatment for its antimicrobial properties but is not used for sedating periradicular nerve tissues.