Barbieri Thesis - BioMedical Materials program (BMM)

Counts on total (%)
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Chapter 5 – Alkali surface treatment effects
M0
M1
M2
0
-550 -50
Heights (nm)
450
Figure 4. The distribution of recorded heights as compared to the zero–plane shows that stronger alkali
surface treatment leads to larger variability in the surface heights.
Table 5. Surface roughness parameters as measured with AFM. Statistical comparison is expressed in
terms of p–values and is reported in the text.
Ra Rq Rz
[nm] [nm] [nm]
M0 27.1±3.8 33.7±5.0 258.3±47.9
M1 58.2±4.1 72.3±4.8 541.5±89.3
M2 105.7±6.3 130.6±7.8 997.3±138.3
Table 6. Calcium and phosphate cumulative ion concentration, mass loss and fluid uptake after 12
weeks in vitro degradation in SPS.
Calcium release Phosphate release Mass loss Fluid uptake
[M]
[M]
[%] [%]
M0 492±75 157±2 10.1±0.2 2.4±0.2
M1 710±120 174±11 10.8±0.1 7.5±0.2
M2
p, ANOVA
645±54 175±3 10.6±0.1 7.3±0.3
M0–M1