I am not actually sure if they can be replaced if needed. Maybe they could hold a 5G antennae or something. I'll ask my dentist next time I visit.
Did you watch Reading Rainbow by any chance? That was a meaningful show to me in these times. Eventually my biggest fandom went to Brain Jacques and the Redwall series.
My son has started to notice that all of Dahl's heroes have terrible family lives in some way, and he's questioned why it's necessary. I think he starts to worry that it might happen to him. I've tried to explain to him that, because the stories aren't real (which is a concept he's comfortable with already), it's a useful shortcut for a writer to make us sympathetic to them. I think he gets it.
If the gum starts receding from a tooth or an infection occurs, there are still barriers between it and the bone, and the body can repair some damage. Implants pass the point of no return far more quickly. If you get an infection around the implant, the bone around the implant will start breaking down and the implant will reject.
Thanks for sharing your story.