Composite Resin Flashcards
Name a monomer in composite resin
Bis-GMA
Urethane dimethacrylate
Name a filler particle of composite resin (5)
Microfine silica Quartz Lithium aluminium silicate Barium aluminium silicate Borosilicate glass
Name the light activated component of composite resin
Camphorquinone
What is the function of low weight dimethacrylates added to composite resin?
To adjust viscosity and reactivity
What is the purpose of the silane coupling agent?
To ensure there is a good bond between filler particles and resin
Normally, water will bond to the glass filler particles, preventing resin from bonding to the glass surface
A coupling agent is used to preferentially bond glass to resin
What is the effect of adding filler particles? (6)
Improved mechanical properties Improved aesthetics Increased abrasion resistance Lower thermal expansion Lower polymerisation shrinkage Less heat of polymerisation
What wavelength of blue light is best for curing composite?
440nm
430-490nm
What is the activation for self curing composite?
Benzoyl peroxide + aromatic tertiary amine
What is the activation for light cured composite?
Camphorquinone + blue light (430-490nm)
Which light source provides broad spectrum light for setting composite?
Halogen
Which light source provides narrow spectrum light for setting composite?
LED
