INBDE (Integrated National Board Dental Examination) Practice Exam

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What is used to dissolve GP during retreat?

EDTA
eugenol
bleach
chloroform

The correct answer is: chloroform

Chloroform is a commonly used solvent for dissolving gutta-percha (GP) during retreatment procedures. EDTA is used to remove smear layer and debris from the root canal walls, but it is not used to dissolve GP. Eugenol is a component of some temporary filling materials but is not used in retreatment procedures. Bleach is not used to dissolve GP, but it can be used as an irrigation solution to disinfect the canal.