Product/Process Step Constituent/CAS Number Origin of Constituent/Use
Filler Material –Inorganic Silica glass (SiO2)
(CAS #: 60676-86-0)
made of beach sand and ordinary
glass, or crystalline quartz, pyrolytic
silica and specially engineered
aluminium silicates (e.g. barium,
strontium or lithium aluminium
silicate glass)
Alumina glass (Al2O3)
(CAS #: 11092-32-3)
made of crystalline corundum
Glass+Sodium Fluoride e.g., sodium-calciumaluminafluorosilicate
Matrix Material-Organic Bisphenol A-glycidylmethacrylate (BisGMA)
(CAS #: 88542-28-3)
different aromatic and diacrylate
monomers and oligomers used (some
of which is shown here). TEGMA is a
monomer used to control the viscosity
of unmixed materials.
Ethoxylated bisphenol A-methacrylate
(Bis-EMA)
(CAS #: 41637-38-1)
Triethylene glycol dimethacrylate
(TEGMA) (CAS #: 109-16-0)
Urethane dimethacrylate (UDMA) (CAS
#:72869-86-4)
Filler particle incorporation Trialkoxysilane
(CAS #: 7783-26-8)
coating of the filler particles with
silane coupling agents (e.g., as
trialkoxysilane) to ensure covalent
coupling between filler and resin
matrix
Composite curing (chemical) benzoyl peroxide (CAS #: 94-36-0) and
benzene sulphinic acid
(CAS #: 98-11-3)
polymerization initiators
aromatic tertiary amine accelerators
Composite curing (light) Camphorquinone (CAS #: 10373-78-1) polymerization initiators
an aliphatic tertiary amine accelerators
Pigments Inorganic oxides and organic compounds used to adjust composite shade
Bonding to enamel and dentine Phosphoric acid, citric acid, and maleic
acid
chemical etching solutions,
used to demineralize the tooth surface
and increase the surface area.
Hydroxyethylmethacrylate a primer solution applied to obtain
optimal wetting of the surface for the
bonding agent