Ability of an orthodontic wire to spring back to its original shape is evaluated by_____________?

Related Mcqs:

1. 18-B Stainless steel orthodontic wire has_______________?

   A. 18% Nickel 8% Chrominum
   B. 18% Chromium 8% Nickel
   C. 18% Chromium 8% Cobalt
   D. 18% Carbon 8% Iron

2. Stainless steel orthodontic wire can be hardened by________________?

   A. Tempering
   B. Work hardening
   C. Age hardening
   D. Precipitation hardening

3. Etching depth after 30 sec for orthodontic bracket with orthophosphoric acid is_________________?

   A. 10 um – 20 um
   B. 3 um – 9 um
   C. 50 um – 110 um
   D. 200 um – 250 um

4. The genetic ability of a bacterium to grow in the presence of several antibiotics is passed in vivo from one bacterium to another by_____________?

   A. Conjugation
   B. Rarefaction
   C. Transduction
   D. Transformation

5. Which one of the following is the result of applying a load to a wire below its modulus of elasticity on a load deflection diagram ?

   A. Fracture of the wire
   B. permanent deformation
   C. Spring back
   D. Increase in stiffness

6. Lidocaine produces its antiarrhythmic effects by_____________?

   A. Increasing A-V conduction
   B. Decreasing cardiac excitability
   C. Increasing cardiac conduction velocity
   D. Increasing spontaneous pacemaker activity

7. Citrate is a useful anticoagulant because of its ability to_____________?

   A. Buffer basic groups of coagulation factors
   B. Bind factor XII
   C. Bind vitamin K
   D. Chelate calcium

8. The major antiseptic value of soap lies in its ability to_____________?

   A. Kill mircobes
   B. Remove microbes
   C. Inhibit microbial growth
   D. Dehydrate microbial cells

9. Which type of collagen fibers demonstrates Chicken wire configuration ?

   A. Type I
   B. Type II
   C. Type III
   D. Type IV

10. Chicken-wire appearance of enlarged bone marrow spaces is seen in_______________?

    A. Fetal alcohol syndrome
    B. Sickle cell anaemia
    C. Haemophilia A
    D. Beta thalassemia majon