Prep Design (Rosenstiel) Flashcards
0
Q
What are the biological characteristics of a tooth prep/restoration?
A
- Conserve tooth structure
- avoid over contouring
- harmonious occlusion
- prevent fracture
1
Q
What are the three characteristics of an optimal prep/restoration?
A
Mixture of:
Biological
Mechanical
Esthetic
2
Q
What are the mechanical characteristics of a tooth prep/restoration?
A
- retention form
- resistance form
- deformation
3
Q
What are the esthetic characteristics of a tooth prep/restoration?
A
- minimal metal display
- maximum porcelain thickness
- sub gingival margins
4
Q
What is the cause of the highest percentage of failed prosthetics?
A
Caries 23%
5
Q
What is retention form?
A
The ideal taper so that the restoration stays seated
6
Q
What is resistance form?
A
Removal due to horizontal oblique forces
7
Q
What are some types of prevention of deformation?
A
- Marginal design
- Alloy type
- Adequate tooth reduction
