I have a tooth implant (lower right molar - last tooth.) Today I went
to my regular dentist to finally be fitted for a crown. He shocked me
when he said, "A crown will not fit there. There is no clearance for a
tooth". I asked him what the solution was. After conferring by phone
with my periodontist, he said I need to see a restoration expert. And
that fitting a crown on the bottom - would require them altering my top
(healthy) tooth above it; shortening and crowning that too.

There has never been any mention before this of any work needed for
adjoining teeth. Had there been, I wouldn't have agreed to this implant
to begin with.  I'm wondering if the periodontist incorrectly placed my
implant?  I don't feel good about altering my otherwise healthy top
molar.... Your opinions would be appreciated. Thank you.