Ankylos implants placed approx. 2007. These implants have no hex or spline, only a taper. They have a 15 year history of loosening and broken screws- #8 has a broken screw in it now. They have always been restored as individual crowns. Would splinting the crowns help? That’s the only thing I can think of to do differently but I’m not sure it addresses the problem.
Difficult to tell for sure but it appears that #9 is fractured at the collar. I have never utilized Ankylos but make sure that genuine OEM parts are being used because I have found that recurrent prosthetic complications on otherwise well place hardware is usually a function of generic components.
There are problems with prosthetic fitting( left crown is not good at all) , implants themselves are one s of the best … 4.5 might be broken collar side or these are grooves of old implants…
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Since I don’t have any experience with Ankylos I have been looking looking into their product trying to figure out what it is that looks like a fracture at the top of each of these fixtures. At first glance it looks like fractured fixtures and that would explain the frequent loosening of the restorations over the years. I assume #7 is also Ankylos and it doesn’t have any evidence of an irregularity at the neck so I am leaning towards fractured fixtures as the culprit. Just my opinion from the images and as someone with zero working knowledge of the particular product being used…
Thank you- I’ll get to see the top of the fixtures when I do the gingivectomy to expose them.