Metal restorations Flashcards
1
Q
Advantages of metal restorations
A
Conservative preparation Accurate fit Robust Easy to adjust Can support RPD Act as bridge retainer Simple production
2
Q
Disadvantages
A
Aesthetics
Concerns regarding biocompatibility
Thermal conductivity
3
Q
Procedure
A
Die spacer is applied Separator is applied First layer created created by dipping Margin wax replaced with inlay wax Proximal contacts built in inlay wax Occlusal contacts produced Shape established
4
Q
Considerations
A
Thickness of material
Emergence profile
Contacts
Shape
5
Q
Investing
A
Investing
Sprue size and position
Refractory type
6
Q
Casting
A
Metal type -melting temp -casting temp -heat treatment Hear source Casting force
7
Q
Finishing
A
De-vesting -removing refractory Cleaning in acid Metal finishing -trimming -adjusting -polishing
8
Q
CAD
A
Design via CAD system
Print or mill wax pattern
Mill metal from ingot
Selective laser melting (£D printing of metal)
