Par 2 - Extra TR

Question 1

The basic mechanism for enamel and dental bonding using etch and rinse system is…?

Answer 1

All of the above: demineralization of the surface by the acid, curing of adhesive
monomers to make adhesive tags that microscopically form a mechanical bond,
penetration of the adhesive monomers into the microscopic spaces created by
the etchant)

Question 2

T/F? For a prospective fiber post design, the method of fixation is more relevant than the design.

Answer 2

TRUE.

Question 3

T/F? Short wide posts lead to elevated stress concentrations in the apical regions. A crown length-post ratio of at least 1:1 should be provided.

Answer 3

FALSE, TRUE.

Question 4

T/F? Zirconia posts have a higher incidence of fracture than a fiber post.

Answer 4

TRUE.

Question 5

The distance from a completely formed MB cusp and the tip of the MB pulp horn is ___
mm.

Answer 5

6.5

Question 6

The minimal body flare and tip size that is acceptable to achieve optimum irrigation is


Answer 6

25/0.6

Question 7

A posterior endodontically- treated tooth with one wall missing and opposing natural
dentition is best restored with …?

Answer 7

core with cuspal protection