9 - Tooth wear 2 Flashcards

Indirect restorations

1
Q

What are the principles used in treatment planning indirect restorations in tooth wear cases?

A
  • consider adhesive minimally invasive first
  • fixed restorations are possible if 50% tooth structure remains above gingival margin
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What problems present in tooth wear cases with tooth preparation?

A
  • lack of occluso-gingival height
  • lack of occlusal space
  • severely compromised teeth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What modifications can be incorporated in tooth wear cases to improve retention and resistance form?

A
  • materials
  • grooves
  • inlays
  • ferrule
  • parallel preparations
  • margins and occluding surfaces
  • cores
  • electrosurgery
  • surgical crown lengthening
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How can materials be modified in tooth wear cases?

A
  • metal on biting surfaces
  • porcelain still used in smile line where possible
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Why is metal used in tooth wear cases?

A

More ductile and therefore less likely to fracture under high occlusal force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How do inlays and grooves improve resistance?

A

Reduction in radius of rotation of restoration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How do you modify porcelain preparation for tooth wear cases?

A
  • rounded curved prep
  • prevent crack propagation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly