MCQOPTIONS
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				| 1. | 
                                    The plasticizers used in polyether impression material is_______________? | 
                            
| A. | polyether polymer | 
| B. | Colloidal silica | 
| C. | Glycol ether | 
| D. | Di-vinyl poly (dimethyl siloxane) | 
| Answer» D. Di-vinyl poly (dimethyl siloxane) | |