An implant (1) to be implanted in bone tissue, e.g. a dental implant or
an implant for an orthopedic application, comprises surface regions (4)
of a first type which have e.g. osseo-integrative, inflammation-inhibiting, infection-combating
and/or growth-promoting properties, and surface regions (8) of a second
type which consist of a material being liquefiable by mechanical oscillation. The
implant is positioned in an opening of e.g. a jawbone and then mechanical oscillations,
e.g. ultrasound is applied to it while it is pressed against the bone. The liquefiable
material is such liquefied at least partly and is pressed into unevennesses and
pores of the surrounding bone tissue where after resolidification it forms a positive-fit
connection between the implant and the bone tissue. The surface regions of the
two types are arranged and dimensioned such that, during implantation, the liquefied
material does not flow or flows only to a clinically irrelevant degree over the
surface regions of the first type such enabling the biologically integrative properties
of these surface regions to start acting directly after implantation. The implant
achieves with the help of the named positive fit a very good (primary) stability,
i.e. it can be loaded immediately after implantation. By this, negative effects
of non-loading are prevented and relative movements between implant and bone tissue
are reduced to physiological measures and therefore have an osseo-integration promoting effect.
