Roxolid® is a homogenous metallic alloy composed of the elements titanium and zirconium. As a result of alloying these two elements a higher tensile strength compared to pure titanium (annealed1 and cold worked2) can be achieved. Thanks to the higher tensile strength small diameter implants can be placed with more confidence.
Biomechanical tests (fatigue strength) have been performed according to the ISO 14 801 norm. The fatigue strength of a system is the maximum force where three systems survived at least 5 million load cycles without any fractures
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1. Block in which the implant is fixed, bone resorption of 3mm is simulated 2. Axes of the block 3. Implant/abutment/crown system 4. Block which creates cyclic force on the abutment F. Cyclic force on the system |
Fig. 1: Schematic depiction of the fatigue test set-up3
The loading force is applied with a frequency of 15Hz at an angle of 30° on the system. For each load level 3 systems are tested. A bone resorption of 3mm is simulated.
Fig. 2: Fatigue strength overview3
Despite the small diameter, Roxolid® implants show higher fatigue strength compared with other main implants/abutment systems3 (see figure 2).
1Norm AS™ F67 (states min. tensile strength of annealed titanium)
2Data on file, tensile strength of material used for all Straumann® titanium and Roxolid® implants
3Data on file, tests according to ISO 14 801 (5 Mio survival cycles in air, 15Hz)
OsseoSpeed® is a registered trademark of Astra Tech AB, Sweden,
TiDesign™ is a trademark of Astra Tech AB, Sweden
NobelReplace™, NobelActive™ and Esthetic Abutment™ are trademarks of Nobel Biocare Servces AG, Switzerland
