Zinc Oxide Eugenol Properties — NDEB AFK MCQ
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Correct answer: E — Has obtundent (sedative) effect on the pulp
Eugenol has an obtundent (sedative/analgesic) effect on the dental pulp by inhibiting nerve conduction. ZOE cements are therefore used as sedative temporary dressings and bases under deep restorations. However, eugenol inhibits the polymerisation of resin-based materials (composites, resin cements), so ZOE should not be used as a base under composite restorations or before cementation with resin cements.
Reference: Anusavice – Phillips' Science of Dental Materials, 13th ed., 2022