Table 1 X-ray photoelectron spectroscopy results
Sample | Element | Pre-UV | Post-UV | Change ratio (%) |
|---|---|---|---|---|
a) Test piece of pure titanium evaluated 3 months after production | ||||
1 | O1s | 48 | 58 | +20.8 |
C1s | 22 | 7 | -68.2 | |
Ti2p | 5 | 6 | +20.0 | |
N1s | 11 | 11 | 0 | |
Si2p | 13 | 15 | +15.4 | |
P2p | 0 | 0 | 0 | |
Ca2p | 0 | 0 | 0 | |
2 | O1s | 47 | 56 | +19.1 |
C1s | 25 | 9 | -64.0 | |
Ti2p | 4 | 5 | +25.0 | |
N1s | 9 | 12 | +33.3 | |
Si2p | 13 | 15 | +15.4 | |
P2p | 0 | 0 | 0 | |
Ca2p | 0 | 0 | 0 | |
b) Test piece of the Ti-6Al-4V alloy evaluated 3 months after production | ||||
1 | O1s | 49 | 62 | +26.5 |
C1s | 23 | 5 | -78.3 | |
Ti2p | 3 | 4 | +33.3 | |
N1s | 7 | 8 | +14.3 | |
Si2p | 16 | 19 | +18.8 | |
P2p | 0 | 0 | 0 | |
Ca2p | 0 | 0 | 0 | |
2 | O1s | 47 | 59 | +25.5 |
C1s | 25 | 7 | -72.0 | |
Ti2p | 2 | 3 | +50.0 | |
N1s | 10 | 10 | 0 | |
Si2p | 14 | 18 | +28.6 | |
P2p | 0 | 0 | 0 | |
Ca2p | 0 | 0 | 0 | |
c) Actual implants (PROSPACE®) used in lumbar fusion surgery, produced 1 year prior to surgery | ||||
1 | O1s | 40.8 | 50.4 | +23.5 |
C1s | 24.8 | 9.2 | -62.9 | |
Ti2p | 19.3 | 22.5 | +16.6 | |
N1s | 10.1 | 11.5 | +13.9 | |
Si2p | 3.2 | 4.1 | +28.1 | |
P2p | 0.6 | 0.8 | +33.3 | |
Ca2p | 1.1 | 1.4 | +27.3 | |