GIOMER is basically a modified GLASS IONOMER.
It is a true hybrid of two compounds, Glass Ionomer and Composite
The difference of Giomer from Compomer is, in Compomer variable amount of unhydrated polyacrylic acid is added to the resin matrix and the acid base reaction wont takes place until water comes and contact with compomer
The main disadvantage of COMPOMER is less amount of Fluoride release and absence of Fluoride recharging ability.This makes the GIOMER more preferable then compomer
GIOMER uses PRG( Pre Reacted Glass ionomer ) TECHNOLOGY by which it differs from compomer, in giomer the glass filler particles used are pre reacted with polyacrylic acid
By using this technology,we can get the properties of both glass ionomer and composites.
The properties of GIOMER is fluoride release and fluoride recharging of glass ionomer and esthetics,easy of polishing,and strength of composite.
COMPOSITION Of GIOMER (BEAUTIFUL)
- Bisphenol A glycidyl dimethacrylate,
- TEGDMA,
- inorganic glass filler,
- aluminuoxide, silica,
- pre-reacted glass ionomer filler,
- DL-camphorquinone
There is a pre reaction of Fluoroalumino silicate glass fillers with Polyacrylic acid,th
e reaction produce a glass ionomer which is more stableThis phase is called”WET SILICEOUS HYDROGEL”
This material is freeze dried, milled, treated with silane and then round to produce PRG fillers, then these glass fillers are added to the resin matrix(GIOMER)
PRG TECHNOLOGY is used in production of two types of fillers.
They are:
S-PRG (Surface Pre Reacted Glass Ionomer) marketed as BEAUTIFUL (shofu)
F-PRG (Full Pre Reacted Glass Ionomer) marketed as REACTMER (shofu)
