Setting time of ZOE is best controlled by
Correct Answer: Cooling the glass slab
Description: The clinician can shorten setting time by adding a small amount of zinc acetate or additional accelerator or a drop of water in the paste before mixing or by extending the mixing time. Although these methods affect the property of the cement adversely, the use of a cool spatula and mixing slab is also effective in prolonging the setting time and is the recommended method to control setting time.
Reference: PHILLIPS’ SCIENCE OF DENTAL MATERIALS, 12th ed page no 179
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