Which one of the following restorative materials is having coefficient of thermal expansion close to that of tooth enamel and dentin ?

Related Mcqs:

1. Smooth surface caries is characterized by spread of caries in enamel and dentin as cones. These alignment in enamel and dentin is____________?

   A. Base to base
   B. Apex to base
   C. Apex to apex
   D. None of the above

2. Marked reduction in amount of dentin, widening of predentin layer, presence of large area of interglobular dentin and irregular pattern of dentin is seen in______________?

   A. Hypocalcified dentin
   B. Odonto dysplasia
   C. Dentin dysplasia
   D. Dentinogenesis imperfecta

3. Coefficienty of thermal expansion of tooth enamel is closest to_______________?

   A. Slicate cement
   B. Composite
   C. GIC
   D. Polycarboxylate

4. In adult teeth, the type of dentin present underlying dentin-enamel junction is_______________?

   A. Predentin
   B. Mantle dentin
   C. Interglobular dentin
   D. Tertiary dentin

5. Coefficient of thermal expansion of which of following is most similar to that of tooth ?

   A. Gold inlay
   B. Acrylic resin
   C. Silicate cement
   D. Gold foil

6. Compared to the inter tubular dentin, peritubular dentin is characterized by which of the following ?

   A. Greater stainability
   B. Lasser content of inorganic salts
   C. greater content of inorganic salts
   D. Greater content of large collagen fibres

7. Coefficient of thermal expansion of metal-ceramic alloys is________________?

   A. Same as porcelain
   B. More than porcelain
   C. Less than porcelain
   D. More than or equal to porcelain but not less

8. Linear coefficient of thermal expansion of metal used for metal caramic restoration range from________________?

   A. 11.5-12.5×10-6/°C
   B. 10.5-11.5×10-6/°C
   C. 13.5-14.5×10-6/°C
   D. 16.5-17.5×10-6/°C

9. A girl suffering from browing of teeth, wearing of enamel but not cavitory, OPG shows obliteration of pulp with narrowing of canal & deposition of secondary dentin, she gave the history that out of her 4 brothers 2 are suffering from the same disease, She is suffering from_______________?

   A. melogenesis imperfecta
   B. Dentinogenesis imperfecta
   C. Flurosis
   D. Odontodysplasia

10. Turbid dentin in carious tooth is all EXCEPT_____________?

    A. Zone of bacterial invasion
    B. Zone which can not be remineralized
    C. Zone in which collagen is irreversibly denatured
    D. Zone that need not be removed before restoration