Pharmacology · single question
Sodium perborate is BEST used for which dental application?
Show answer and explanation
Correct answer: C. Internal bleaching of non-vital (traumatized) teeth
- A. External whitening of vital teeth uses carbamide peroxide or hydrogen peroxide (Zoom, Opalescence, etc.) — not sodium perborate.
- B. Cavity disinfection uses chlorhexidine, fluoride, or other antimicrobials — not sodium perborate.
- C. Correct. Sodium perborate mixed with water (or 30% hydrogen peroxide for the 'superoxol' technique) is the material of choice for INTERNAL bleaching (walking bleach technique) of non-vital, discolored teeth following trauma. It releases oxygen slowly, oxidizing the discoloring pigments inside the tooth.
- D. Endodontic irrigation uses sodium hypochlorite as the primary agent — not sodium perborate.