Date: 2008-12-15 06:32 pm (UTC)
Looking... They have added porous HA-coated flanges to the titanium pin. HA --> Hydroxyaptite is a biocompatible and antibacterial coating used on titanium (often plasma sprayed). The porous flanges allow the dermal layers to grow into the surface to seal the implant rather than triggering skin down-growth (like a piercing). It is a progression from studying the interface structure of deer antlers, basically by mimicking a working biologic structure.
The other key half was developing a very reliable mechanical break-away (just patented) that would prevent the bone breaking and subsequent tear-out of the post.
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