As you have said that the bone directly to your ear is tender so there are chances of this being cos of some problem with your temperomandibular joint (TMJ
). Generally the zygomatic arch is not involved with such symptoms unless there is some history of trauma and is rarely damaged cos of implant placement.
It will be better if you can provide with some more details related to the tenderness like the nature of pain, is it continuous? does it increase during chewing food? does it go on its own? is there any history of trauma?