Resin bonded Fibre Reinforced Composite Bridges Flashcards
1
Q
What are Resin bonded fibre reinforced composite bridges? (Resin bonded FRC’s)?
A
Similar to resin bonded alloy bridges, but use a fibre reinforced composite backing instead
Generally not used as often and more of a short/medium term restoration
*Do not go beyond two pontics
2
Q
What types of FRC’s are available as a backing?
A
Kevlar
Carbon Fibre
Polyethylene fibre
Quartz fibre
3
Q
What provides the strength in FRC’s?
A
- Volume of fibres
- Individual fibre strength
- Strength of resin matrix
4
Q
What are the properties of Sinfony re.
- Material type
- Curing
- Filler content
- Filler type
- Resin matrix composition
- Water uptake
- Aesthetics (good or bad)
A
- Resin type material
- Light cured
- 50% filler content by weight
- Silica filler
- Aliphatic and cycloaliphatic monomers (not HEMA/TEGDMA based)
- Low water uptake
- Good astehtics
5
Q
How is Sinfony fabricated?
A
- Constructed on die via layering technique (opaque, dentine, enamel pastes)
- Initial layers snap light cured using Vsio-Alfa Unit
- Final vacuum firing via Visio Beta Vario Unit + Light
- Rocatec used used to facilitate adhesion to metal surface if alloy subframe used
6
Q
What are some limitations to indirect resin composite restorations?
A
- Long term durability and clinical performance unknown
- Loss of shine
- marginal staining/plaque accumulation
- Higher immediate cost
- Composite inlays reported to be inferrior to ceramic inlays in terms of longevity?
