MCQOPTIONS
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				| 1. | 
                                    Porosity of denture base is due to_______________? | 
                            
| A. | Packing at dough stage | 
| B. | Curing at 160°F for 9 hrs | 
| C. | Inadequate pressure | 
| D. | All of the above | 
| Answer» E. | |