Primary Tooth Pulpectomy — ORE Part 1 MCQ
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Correct answer: C — Iodoform, parachlorophenol, camphor and menthol
**A is correct.** Walkhoff paste is an historical iodoform-based root-canal medicament. Its recognised formulation includes iodoform with a chlorophenol antiseptic (classically parachlorophenol) and aromatic constituents including camphor and menthol. Beechwood creosote is not an appropriate substitute in a precise definition of this paste. B describes a modern calcium hydroxide–iodoform paste formulation, not Walkhoff paste. C combines materials associated with older pulp therapy/root-filling approaches but is not the Walkhoff formulation. D describes MTA, a calcium-silicate material used for vital-pulp and repair procedures. E describes Ledermix-type steroid–tetracycline material rather than an iodoform paste. The question concerns historical composition, not current preferred management of non-vital primary teeth.
Reference: Herforth A, Strassburg M. Therapy of chronic apical periodontitis in traumatically injuring front teeth with ongoing root growth. Dtsch Zahnarztl Z. 1977;32(6):453-459. PubMed record indexes Walkhoff's iodoform paste with iodoform, chlorophenols, menthol and camphor. https://pubmed.ncbi.nlm.nih.gov/267565/