Biomedical Engineering Reference
In-Depth Information
Table 7.1
(
Cont.
)
Starting
Materials
Precursor
Constituent
M1
M2
M3
NH
4
F/MgF
2
1.08%
3.85%
2.53%
F
−
Hardness, GPa
4.9
8.2
±
1.5
6.4
±
1.2
Flexural
Strength
(three point)
94.9
±
14.0 3
80.6
±
7.7
E
−
modulus, GPa
57.6
±
2.8
69.7
±
2.9
(
a
)
(
b
)
2
m
m
2
m
m
(
c
)
(
d
)
2
m
m
2
m
m
Figure 7.12
SEM images of the
Escherichia coli
bacteria after 4 h of incubation
on (a) Control, (b) M1, (c) M2 and (d) M3 glass ceramic samples [72]. (With
permission from Springer Science+Business Media)
7.2.5.2 HA
based Biocomposites with Bactericidal Property
Nath
et al.
reported the mechanical and antimicrobial property of mechani-
cally mixed HA
−
10 wt% Ag composite, sintered at 1200
o
C in pressureless
sintering. The overall cell attachment, cellular bridge formation and cell
proliferation behavior of L929 mouse fi broblast cells on HA
−
10 wt% Ag
does not cause any signifi cant difference in reference to pure HA. The com-
bined result of alkaline phosphatase activity and osteocalcin expression
−
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