Ivoclar Vivadent SR Phonares II - Manual (Page 7)

7
NHC component function Main advantage
UDMA
(urethane dimethacrylate) Matrix The UDMA matrix features a high degree of cross-
linking. The material structure offers high stability and
high resistance to chemical attacks.
High-density silanized SiO
2
Filler 1 Inorganic fillers stiffen the matrix and increase the
material's hardness and resistance to abrasion. They
also optimize the material's refractive index and
therefore enhance the natural shade effect and
opalescence.
Silanized SiO
2
nanoparticles Filler 2 Nanoscale surface-modified inorganic particles
re inforce the composite structure. The nanoscale
pro perties arising from these particles are responsible
for the formation of homogeneous contact surfaces.
The result is a material that is very kind to opposing
tooth structure.
Inorganically filled UDMA
polymer Filler 3
(iso filler) Matrix-based pre-polymer particles help reduce poly-
merization shrinkage.
PMMA clusters Inclusions The inclusion of PMMA clusters in the composite struc-
ture reduces the affinity for plaque and discolouration.
nhc comPosItIon
UDMA matrix
High-density silanized SiO
2
Inorganically filled UDMA polymer
Silanized SiO
2
nanoparticles
PMMA clusters