Enamel contouring and bonding or 4 top veneers? (photo)

Both are viable options for your smile.  I also agree that if you straighten your teeth first, then you open yourself up for more minimally-invasive treatment choices.  You don't have to use Invisalign for this minor straightening - but if you want to straighten and align your bite and all of your upper and lower teeth, then I would definitely consider Invisalign.  If you just want to straighten the upper front teeth, there are several options (spring retainer, Bioliner clear aligners, etc).If you straighten first (it may take 2-4 months to get them straight), then reshaping and bonding will be a good option for you - and the most minimally invasive.  If you straighten and still want veneers, you can move your teeth to a position where you can do min-prep or no-prep veneers where you will need only minimal contouring of your teeth to fit the veneers.If you straighten first, you should wear retainer(s) at night (Invisalign makes a very nice clear aligner retainer that is not bulky) after your treatment is finished.If you don't want to straighten first, then you still have the choice of reshaping/bonding or veneers.  Either route, find a minimally-invasive dentist who has experience and skill in cosmetic dentistry to do the work.

Hi:One choice you have is to use Invisalign to straighten out your teeth and then redoing your bonding.  Otherwise porcelain veneers is the best long term solution.Best,Dr. Maddahi

Have you considered Invisalign to straighten the teeth before bonding or veneers? Correcting the position of the teeth before Veneers or bonding will keep the required tooth preparation / reduction to a minimum. An added benefit is that eliminating the crowding will help keep your gums helathy. Good Luck!

You have experienced bonding and have seen it last for 15 years.  Materials are better today and with a good experienced cosmetic dentist, you should be able to get an excellent result with bonding.  In my opinion, the biggest advantage of bonding is that you do not have to remove any healthy enamel.  It is a  less invasive procedure then porcelain veneers.   That being said, the drawbacks are that bonding is not as strong or stain resistant as porcelain veneers, and will not have as long a life expectancy.   Porcelain veneers are also much more expensive than bonding, but if you get a very experienced and competent cosmetic dentist, you should get a dazzling a result that will last a long time. 

I couldn't agree more! You have beautiful teeth. Have you considered orthodontics or clear aligners to reposition these teeth, followed by some reshaping of the enamel? You are smart to be concerned about the long term effects of veneers. They are a great solution for a number of situations and if done correctly they can involve minimal loss of tooth structure; however, there is nothing better than your own natural healthy tooth structure.
I understand your dislike of the dark space between the front teeth near the gums. You might consider having this area evaluated by a periodontist to see if there is a thicker amount of fibrous tissue here preventing the gum tissue from filling that space. Sometimes it can be thinned to allow it to adapt to that area better. 
Regardless of whether the space that you are wanting closed is done with bonding or veneers, there will still be a stair step effect that you will be able to feel when you floss that it will be necessary to keep exceptionally clean to prevent inflammation and/or decay. I think it is worth considering straightening your natural teeth and consulting with a periodontist about your options for relaxing that area of gum tissue.