Is my bonding falling out? Why?? (photos)

I would say that if your bonding failed in one day, it is unlikely that the dentist will charge you again.  Because it is bonding, it is not expected to last more than a couple months, but sometimes it lasts much longer than that.  The more permanent fix would be removing the dental bonding on that tooth and having a porcelain veneer placed there instead.  You would likely get 20 plus years out of a porcelain veneer on that tooth.  Good luck and I hope this helps. Follow me if you have more questions.Sarah Thompson, DMDSt. Louis, MO area (O'Fallon, IL)Real Self 100

This should easy to correct.  The dentist just needs to do slight recontouring and polishing of the composite and it should be fine.  It is not likely that he/she would charge you to do this.  Good luck.