Question 1

As a general principle, how much enamel should be reduced for a porcelain veneer?

Options :

A : As much as necessary to facilitate fabrication of an esthetic restoration

B : Adequate reduction so the lab technician can block out undercuts

C : As much as necessary to decrease the need for temporization and improve bonding

D : No more than 1.0 mm of enamel should be removed

Answer: D

Question 2

In what position of the TMJ can the mandible accept firm compressive loading with no signs of tenderness or tension?

Options :

A : Centric relation

B : Centric occlusion

C : Lateral excursion

D : Maximum opening

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

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 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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