I’ve just recently had my porcelain crowns (both front upper) replaced.
was a bike accident in my teens, which were capped/veneered. In my twenties someone barged past in a pub whilst I was drinking from a bottle, meaning I needed to get both crowned.
Fast forward twenty plus years and my gums had receded showing the black of the dead teeth also quite a gap had developed. So it was re-done.
As a side note the dentist whenever doing a crown/root canal (I have 4) has warned there is a chance of failure and abscess.
Obvs not a dentist but I believe you don’t always need a root canal for a crown, dunno?