Hi VMarieM,

Very sorry to hear you're going through such an ordeal.
I'm also new on this forum, but I thought I'd add my thoughts.

In my opinion your dentist damaged your tooth pulp during the crown procedure. I'd say he wouldn't be to blame, as you said there was already a massive filling in there - it sounds like unavoidable. My guess would be that the tooth infection, if present, was not that deep, since the tooth was not hurting you before.

So my guess would be that the eye stye and ear pain are connected, and they further affected the now damaged tooth. You've probably already seen online that both the eye and the ear are connected to a thing called "preauricular lymph node" - so, in my non-expert opinion, perhaps you should ask your GP for treatment for that (I read they give antihistamin + anti-inflammatory).

My dentists (yes, plural) have told me that some random mild pain is normal for months after a root canal, so perhaps wait that one out?