Question 1

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 2

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 3

Of the following, what is the BEST treatment for a Class IV fracture of a lateral incisor with no pulp exposure and otherwise healthy teeth?

Options :

A : Bonding: this is the most conservative treatment for a Class IV fracture of this tooth

B : Provisional: this will allow you to assess the tooth-s long-term nerve health

C : Porcelain Jacket Crown: this will allow you to most closely match the adjacent teeth

D : Lithium disilicate crown: this provides the best complement of strength and esthetics

Answer: C

Question 4

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

Question 5

The 19-year-old female pictured above recently had her braces removed. Her orthodontist referred her to you for restorative care. At your introductory appointment photographs and models were taken. In your initial evaluation of this case, which of the statements is correct?

Options :

A : Diagnostic work-up will show this is a good case for Accreditation

B : A diagnostic wax-up is needed to evaluate the restorability of this case

C : Interdisciplinary communication was likely used in this case

D : An implant and four restorations will restore to esthetic proportions

Answer: D

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