Since his discovery of osseointegration, Professor P.I. Brånemark has prescribed commercially pure (c.p.) titanium for use in dental implant restorations.
The strongest standard grade of c.p. titanium is ASTM Grade 4 with a 0.2% yield strength of 480 MPa. Nobel Biocare surpassed this standard by developing a proprietary cold-working process for Grade 4 Titanium to achieve even higher yield strength.
From market introduction, following extensive material- and preclinical testing, Nobel Biocare’s cold-worked c.p. titanium and patented TiUnite surface have been documented as exceptionally strong and clinically proven to enhance osseointegration. Nobel Biocare has used c.p. titanium for over 20 years and this specially processed version has been used in all Nobel Biocare implants for over 10 years.
Strength in all diameters
Nobel Biocare’s cold-worked c.p. titanium is especially suited for the unique NobelActive implant design, providing the enhanced material strength needed for the required fatigue strength as well as the thin-cutting threads.
The strength of Nobel Biocare’s c.p. titanium also benefits the performance of smaller diameter implants. Nobel Biocare has over 10 years of experience in smaller diameter implants beginning with the year 2000 launch of the Ø3.3 Brånemark System MK IV until the current release of NobelActive 3.0.
Smaller diameter implants offer less invasive dental implant solutions for patients with narrow bone ridges, and limited space between teeth. A smaller diameter can also minimize the need for guided bone regeneration procedures. The Ø3.0, Ø3.5 and Ø4.3 NobelActive implants are produced from the specially processed c.p. titanium MTA 010 material,
which has nearly the same yield strength as the titanium alloy Ti-6Al- 4V used in Nobel Biocare titanium abutments and all abutment screws. NobelActive Ø5.0 implants are produced from the MTA 009 material.
Cold-working process for c.p. titanium
“Cold-working” is a strengthening process. At a specific temperature (near room temperature) and drawing rate, titanium is deformed in a die, resulting in material strain hardening.