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COMPOSITE RESIN, Classification, classification, Gamma- methacryloxypropyl…

- - - - Cross linked the resin results in cured composite
  - - - thickness of cr
      - distance btw light and cr
      - temperature
      - type of filler
      - shade of cr
      - light source quality
      - curing time
  - - - post-operative sensitivity
      - bacterial penetration
      - marginal staining
      - secondary caries
- - - - provide strength and aesthetics to composite resin
      - lower polymerisation shrinkage
      - increase compressive and tensile strength.
      - increase abrasion resistance
      - lower coefficient of thermal expansion
    - - Inorganic fillers
        
        Quartz, glass, alumino-silicates
      - Prepolymerized organic
        
        Ground resin composite
      - Alternatives filler
        
        Fibres, fluoride releasing
  - - - 2.Responsible water sorption
      - 3.Responsible for thermal expansion
      - 1.Binds filler particles together
      - 4.responsible for setting contraction
    - - principal monomers
        
        BIS-GMA
        
        UDMA
        
        Silorane resins
      - diluent monomers
        
        TEGMA
        
        EDMA
  - - - reduce solubility rate
      - reduce water uptake
      - reduce crack propagation
    - - chemically bind to fillers
      - covalent bonds react with resin molecules of the matrix during polymerization
      - provide hydrolytic stability along the resin filler in phase.
  - - - methods of activating setting reaction
        
        light cure (single paste)
        
        dual cure (light and self cure)
        
        chemical cure