Yes good point.
So my apologies I might have been wrong.
I was specifically told that implate is a technique where custom plates are used during jaw surgery and that they mitigate the risk of infection in contrast to medpor, silicone or peak implants and that they can't be used to add vertical height in contrast to these "implants" and that's why I concluded that they are not a "classical implant".
So yeah, maybe the fixation plate also has the function of the implant. You get all in one go, and you probably just pay extra for the custom plates.