Rebuilding front teeth that have worn excessively.
This digital smile makeover gives an example of how dental crowns might be used to rebuild and restore the appearance of worn front teeth, even those that have worn extensively.
Dental issues and concerns:
1) In this "before" picture, you can see how this person's front teeth, especially his center two, have worn excessively.
We'd suspect that this is an indication that this person has a deep overbite (meaning that his teeth overlap quite a bit). This, combined with a tooth-grinding habit (dentists call this activity "bruxism"), could easily result in the appearance we see in this picture.
If we had another photo taken from a different angle, we would probably see that the lower center teeth (the ones directly under the worn upper teeth) have a beveled biting edge. The idea is that as the lower teeth wear away the uppers (from their backside), the front sides of the lower teeth tend to become more and more beveled.
2) Some of the upper front teeth have white fillings that have deteriorated and stained.
3) In back, on the upper right, this person appears to be missing some back teeth.