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Table 1 X-ray photoelectron spectroscopy results

From: The effect of ultraviolet photofunctionalization of titanium instrumentation in lumbar fusion: a non-randomized controlled trial

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
  1. C1s Energy peak position of carbon
  2. UV Ultraviolet photofunctionalization
  3. Carbon concentration = (The number of counts of carbon detected by X-ray photoelectron spectroscopy)/(The number of all elements detected by X-ray photoelectron spectroscopy)* 100
  4. Boldface: The change ratio of carbon