Dental Principles Quiz

What is the purpose of providing bulk to a restoration?

• To make it flexible

• To prevent deformation

• To increase occlusal forces

• To cause perforation

Why is it important to reflect the geometric inclined planes of the occlusal surface during occlusal reduction?

• To increase stress

• To prevent perforation

• To destroy tooth structure

• To reduce retention

What is the purpose of placing a wide bevel on functional cusps?

• To provide structural durability

• To reduce retention

• To increase occlusal forces

• To cause perforation

In which cases should the finish line be placed subgingivally?

• When easy impression is needed

• When the patient can keep the area clean easily

• When the aesthetic is important

• When less trauma to gingival is desired

What is the requirement of a finish line?

• It must be clear, smooth, and well defined

• It must be rough and undefined

• It must be discontinuous

• It must be placed randomly

Which type of finish line is considered an adequate substitute for a chamfer finish line?

• Shoulder

• Shoulder with Bevel

• Chamfer with Bevel

• Knife edge margin

What is the disadvantage of a knife edge margin?

• Under reduction will lead to weak restoration

• High concentrated stress area

• Easily detected on die

• Difficult to cast and wax

When is a shoulder finish line used?

• For partial metal crown

• For complete metal crown

• For porcelain fused to metal restoration

• For all ceramic crown

What is the advantage of a chamfer finish line?

• Weak restoration

• Non-complete seating of restoration

• Easily detected by technician

• High concentrated stress area

What is the advantage of a chamfer finish line?

• Weak restoration

• Non-complete seating of restoration

• Easily detected by technician

• High concentrated stress area