IMPLUS,fixtures are made of pure titanium ASTM,
grade 4, with breaking load Mpa 550; whereas NANO, S-TYPE
XT (extended) and ORTHOSCREW fixtures are made of
titanium ASTM, grade 5, with breaking load Mpa 900.
Titanium is highly reactive: on the surface it combines with
oxygen building a titanium oxide layer (TiO2). Titanium is the ideal
metal to manufacture dental implants thanks to its outstanding
mechanical characteristics (fatigue strength) and bio-compatibility.
It consists of a crystal metallurgical structure with a compact hex
reticule (phase A-stable up to 882 °C) and a cubic structure with
centred body (phase B-stable up to 900 °C).
The low density (4,5 g/cm3) gives it an extreme lightness that,
together with the high mechanical resistance, optimizes its
qualities.
Vickers Hardness 210/220.
Well known is the optimum resistance to corrosion and to
chemical aggression due to the extraordinary stability of the
passive protection of the surface oxide.