Question 1

The process of directing occlusal forces through the long axis of the teeth is known as axial:

Options :

A : Dissipation

B : Alignment

C : Tripodization

D : Loading

Answer: D

Question 2

How can fracture toughness be described?

Options :

A : A measure of material resistance to rapid crack propagation

B : A quantitative analysis of ceramic wear

C : A poor indicator of a material clinical reliability

D : A recent enhancement by the addition of glass to ceramic materials

Answer: A

Question 3

Which of the following is correct concerning tooth preparation for diastema closure with bonded porcelain restorations?

Options :

A : Keep all margins supragingival or equigingival

B : Full crown preparations are best used to close spaces

C : Subgingival interdental margins will allow for improved emergence profiles

D : Mini-wings must always be used to close a black triangle interdentally

Answer: C

Question 4

Central dominance in dental composition can be increased by:

Options :

A : Narrowing the line angles.

B : Reducing the vertical dimension.

C : Closing the diastema at mid-line.

D : Lowering the value.

Answer: B

Question 5

If a ceramic crown repeatedly fractures on the facial incisal of tooth #8. the MOST likely cause is tooth preparation with which of the following?

Options :

A : Rounded incisal edge

B : Minimal chamfer finish line

C : Nearly uniform reduction of 1.5 mm

D : Taper of 8 degrees

Answer: B

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