Dental Which of the following techniques can extend the working time of a zinc phosphate cement? A The P/L ratio can be reduced to produce a thinner mixture B Smaller portions of powder should be mixed for the first few increments C Colder mixing temperature (though temperature of mixing slab should be above dew point) D All of the above 💡 Explanation Which of the following techniques can extend the working time of a zinc phosphate cement? ✓ Correct Answer: D. All of the above