Table 3.

Surface atomic percentages determined by XPS of the untreated grade IV, treated grade IV, untreated grade V and treated grade V with TiO₂ coating samples. (GR IV: Titanium grade IV; GR V: Titanium grade V; T: SLA treated; NT: SLA non-treated; SI: Treated with TiO₂ film).

Sample	Gr IV NT SI	Gr IV T SI	Gr V NT SI	Gr V T SI
%Ti	18.2	9.3	19.5	18.9
%O	44.4	25.4	45.4	44.0
%C	37.4	64.4	35.1	36.9
%Ca	-	0.9	-	0.2
O/Ti	2.4	2.7	2.3	2.3
C/Ti	2.1	6.9	1.8	2.0