Plastic fillings
•
•
•The material is soft, it is cured (herdened) in the cavity _ amalgam, composite, glassionomer,
temporaries.
•
•

Rigid fillings - inlays
•The material is rigid (already cured)
•
•Metal alloy, composite, ceramics.

Inlays
•Rigid fillings
•
•Manufactured in a dental lab
•
•Direct or indirect method
-Direct method rarely
-Indirect method most common
•
•

Inlay
•Crown inlay
•- a part of a clinical crown is replaced
•
•
•Root canal inlay
•- The inlay is cemented into the root canal and replaces a crown (abutment tooth – stump, snag)
•

Crown inlay
•Material
ØComposit
ØCeramics
ØMetal Alloys
inlayreciproke kotveni halasovasendvic

Crown inlays
•
•Indikations
•
•
lA big lost of  dental tissues
lBig interdental spaces
lNext to the crowns and bridges made of metal alloy

Crown inlays
•Contra - indication
•
1.Too small - shallow (flat) cavities
2.High caries risk
3.Frontal area (metallic)

Basic rules of preparation
ØBox
Ø
Ø No undercuts
•
Ø Light divergence of the walls (facilitating shape). Angle of divergency 6 – 15°

1tridaschema
Box
Undercuts
Simple box
Facilitating form

Inlay of metal alloy
•Direct method
•
•
•Indirect method

Inlay of metal alloy
ØDirect method
Ø
Ø
•
•
•
Direct modellation in the mouth
Special wax – casting wax,
(special polymers)
Sprue pin
Investment
Method of the lost wax

•
Class I.
All fissures are involved
No undercuts – facilitating form
Asymetric outlines
Depth 1,5 mm

Sequence of operations
•Dental office
•- Preparation
•- Isolation of the cavity
•- Modellation of heated casting wax
•- Sprue pin – the thickest part
•Dental lab
•- Investment
•- Casting (method of lost wax)
•-Finishing
•Dental office
•- Cementation
•
•
•

Inlay of metal alloy
•Indirect method
Ø
•Taking of the impression
•Model
•Modellation  of the casting wax,
•(special polymers)
•Sprue pin
•Investment
•Method of the lost wax
•
•
•
•