Dental treatment

Hi there,
Has anyone else had trouble with inplants? I had four put in at once about ten years ago, but they all failed. Since then I have just made do, as the teeth go there own way. But now at 48, I’m left with the front and don’t have a lot of options. I have been told that dentures will not work well because of the high palate - to think I once had 29 supernumeraires! They were removed when I was 12 years old at UCLA.
Also, does anyone else have ear trouble after a cold? It takes forever for my ears to not be “full” long after the cold has gone. I had ear tubes when I was a kid. I think it was three times.
Thanks,
pretzel