About zinc oxide eugenol all are true except_______________?
Correct answer: B. Dehydrated ZnO reacts with dehydrated eugenol
- A. ZnO is converted to Zn(OH)2
- B. Dehydrated ZnO reacts with dehydrated eugenol
- C. Water is the byproduct of reaction
- D. Reaction is autocatalytic
Explanation
Zinc oxide eugenol requires moisture for its chelation reaction, producing zinc eugenolate and water; completely dehydrated ZnO and eugenol would not set normally. The conversion of ZnO through hydrated species and the autocatalytic nature of the reaction are compatible with the setting process.
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