Bonding vs Veneers/crown? Which option would be the best for the long term? How strong is dental bonding on a front tooth?

Bonding is a more temporary restoration but can be a cost effective method of quick restoration.  It is very conservative but can look terrific.  Over time it will discolor but the materials have gotten better over the years.  Getting a perfect color match on a single veneer can be challenging while direct bonding is easier to match.Veneers, 3/4 crowns and 360 degree veneer crowns all restore the tooth in a more permanent fashion.Ideally you would like to bond to enamel not dentin.  Preserving enamel is the key to a long lasting restoration.  When there is a great deal of discoloration it is sometimes necessary to remove more tooth structure.  This sacrifices some strength for esthetics.

I believe that you would be better off with a porcelain veneer or crown as opposed to dental bonding due to the amount of tooth structure that you are missing.  Dental bonding is a good treatment option  for small chips, but not for teeth missing considerable tooth structure.  Porcelain is much stronger and will have a much longer life span than the bonding.  In addition, the color match will be much better with porcelain.   

I always try to be conservative in my treatment recommendations so will opt for veneers over crowns if possible.  It depends on amount of tooth structure remaining.  Bonding is not used as much in my practice.  It will cip and stain faster than porcelain.  Think of bonding is tupperware and porcelain veneers and crowns are fine china.  Veneers will also stay the same color and not chnge with time.