Porosity present in a acrylic denture is usually the result of______________?
Correct answer: B. Lack of sufficient pressure applied to flask
- A. A prolonged curing cycle
- B. Lack of sufficient pressure applied to flask
- C. Insufficient acrylic resin monomer
- D. Prolonged bench cooling after curing
Explanation
Insufficient pressure during flask packing or curing allows monomer vapour and air spaces to remain in the denture base, producing porosity. A prolonged curing cycle or bench cooling does not usually cause this defect.
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