Surveying Flashcards
1
Q
Outline the sequence for surveying
A
- set model in surveyor with the occlusal plane horizontal
- make initial survey using black lead in surveryor arm, marking all the teeth
- this will give you the path of displacement
- following on from this, set the surveyor table at an angle and use a different colour lead in the surveyor arm (red)
- this will give you the path of insertion
2
Q
What are areas below the initial survey line referred to as?
A
undercuts
3
Q
What is the role of undercuts when creating partial dentures?
A
clasp tip engages this area and will help resist forces displacing the denture
4
Q
What is the disadvantage of placing a rigid denture component in the undercut?
A
resist and limit insertion
5
Q
The area where the path of inserion and path of displacement overlap is known as…
A
the common undercut
