Which component of zinc oxide-eugenol cement gives its strength ?

Related Mcqs:

1. Eugenol may be replaced in the zinc oxide eugenol cement by______________?

   A. Acetic acid
   B. Alginic acid
   C. Phosphoric acid
   D. Ortho-ethoxy acid

2. All of the following is used as accelerator in zinc oxide eugenol cement except_____________?

   A. Acetic acid
   B. Zinc acetate dehydrate
   C. Calcium chloride
   D. Bromoglycerine

3. All of the following is used as accelerator in zinc oxide eugenol cement except_______________?

   A. Acetic acid
   B. Zinc acetate dehydrate
   C. Calcium chloride
   D. Bromoglycerine

4. Which of the following is common to both zinc eugenol cement and polycarboxylate cement?

   A. Polyacrylic acid is liquid
   B. Chemical bond to tooth structure
   C. Chelation
   D. Substitution o eugenol by EBA to increase strength of cement

5. All of the following statements are true for zinc oxide eugenol cements except______________?

   A. Equal lengths of base paste and accelerator paste are mixed together until the mix has a uniform colour
   B. Increase in temperature and humidity shorten the setting time
   C. The mix appear thick at the start of mixing but after 30 seconds of additional spatulation it becomes more fluid
   D. Water accelerates but heat retards the setting of zinc oxide eugenol cements
   E. Both C & D

6. About zinc oxide eugenol all are true except_______________?

   A. ZnO is converted to Zn(OH)2
   B. Reaction is autocatalytic
   C. Water is the byproduct of reaction
   D. Dehydrated ZnO reacts with dehydrated eugenol

7. The effect of zinc oxide-eugenol on the pulp ?

   A. Is irritating
   B. Encourages pulpal fibrosis
   C. Is sedating
   D. Has no effect

8. The Zinc oxide-eugenol impression pastes harden by________________?

   A. Chemical reaction
   B. Cold
   C. Heat
   D. Pressure

9. The role of magnesium chloride in zinc oxide eugenol impression paste_________________?

   A. Retarder
   B. Modifier
   C. Plasticier
   D. Accelerator

10. Retarder in Zinc oxide eugenol is______________?

    A. CaCl2
    B. Zinc acetate
    C. Alcohol
    D. Glycerine