PROS EXAM Flashcards
Kennedy classification?
Class 1
Kennedy classification?
Class 1
Class II
Class III
Class IV (4)
When clasping ____ is required in order to prevent tooth movement
a reciprocal component
Mid palatal bar requirements
7-12mm
Where should a gingivally approaching clasp be positioned?
On or below the survey line
Why might an I bar clasp be used instead of a T clasp?
Gives less stress on the tooth
Ring clasp goes right round the tooth but doesn’t
join
The dental bar crown height required
9mm (bar is 5mm and clearance of 2mm)
Lingual bar space from the sulcus depth requirements
7mm (3.5mm from gingival margin and 3.5mm bar width)
What do the cummer arms on the lingual bar do?
dental bars are more ____ but require _____ dentition.
dental bars are more hygenic as frees up gingiva and lingual mucosa, but require non-spaced dentition (as would be visible from behind).
CoCr clasp undercut
0.25mm
Stainless steel clasp
0.5mm
Gold clasp undercut
0.75mm
The terminal third of the clasp will finish…
Where the ledge of the gauge barrel touches the tooth when slid up against it
The _____ tip of the clasp is below the survey line.
The flexible tip
Plane line articulator
Average value articulator
Semi adjustable with face bow (see measurements on it everywhere)
Why is a face bow used?
To record the relationship of the maxilla in relation to the TMJ
Advantages of injection moulding over dough packing
- No flash minimising open bit when fitting the dentures
- No trial pack
- Less handling of material
- Less pressure when injecting material
