Direct Retainers

Question 1

Where should Reciprocal arm placed?

Answer 1

-above the height of contour
-Should contact the guiding planes

Question 2

Which element prevents the orthodontic movement?

Answer 2

Reciprocal arm

Question 3

Encirclement of the direct retainer should be____?

Answer 3

Greater than 180 degree

Question 4

Factors affecting the magnitude of retention?

Answer 4

1-angle of convergence,and how far into the angle of convergence the clasp terminal is placed
1-flexibility of clasp arm

Question 5

Favourite clasp material ?its unique feature?

Answer 5

-Wrought wire
-has tensile strength