Biomedical Engineering Reference
In-Depth Information
Table 11.1
Summary of Studies on Nanoparticle Applications in Materials Used in Orthodontics
Nanoparticle/
Nanoscale Imaging
Technique Used
Parameters
Evaluated
Material Studied
Results
Orthodontic stainless
steel wire
[13,14]
NiP film impregnated
with IF-WS
2
nanoparticles
(i) Frictional forces
measured on coated
and uncoated wires
(i) Reduced to 54% on
coated wires
(ii) Friction coefficient
(ii) Friction coefficient
reduced one-third from
0.25 to 0.08
Ni
Ti substrates
[15]
Cobalt and IF-WS
2
nanoparticles
Friction coefficient
66% reduction in coated
substrates
Stainless steel, beta-
titanium and Ni
AFM
Surface roughness
Surface roughness
influenced the effectiveness
of sliding mechanics,
corrosion behavior, and
esthetics
Ti
archwires
[10]
Stainless steel and
Ni
AFM coupled with
nanoindenter
Effects of
decontamination and
clinical exposure on
elastic modulus,
hardness, and surface
roughness
Decontamination regimen
and clinical exposure had
no effect on Ni
Ti archwires
[11]
Ti wires
but did have a statistically
significant effect on
stainless steel wires.
Decontamination of
stainless steel wires
significantly increased
surface hardness (P
5
0.01)
and reduced the surface
roughness (P
5
0.02)
Conventional stainless
steel, ceramic, self-
ligating stainless steel
and ceramic
brackets
[12]
AFM
Surface roughness
2-year orthodontic
treatment regime showed
that self-ligating ceramic
brackets had undergone
less change in roughness
parameters than self-
ligating stainless steel
brackets. Self-ligating
ceramic brackets exhibited
low friction and better
biocompatibility than other
brackets
Fuji II GIC
[16]
Nanohydroxy and
fluoroapatite, N-
vinylpyrrolidone (NVP)-
containing polyacids
CS, DTS, BFS
Highest values for CS,
DTS, and BFS were found
for NVP-nanoceramic
powder modified cements
(184 MPa for CS, 22 MPa
for DTS and 33 MPa for
BFS)
(Continued)
