Would composite bonding be a good choice for me? My front teeth have fillings and they are quite transparent (Photo)

Composite veneers or ceramic veneers can both give excellent results.  There is more life to well done ceramic and it should hold up better.Your narrow mouth would make you an excellent candidate for a DNA Apppliance to give you a wider more attractive smile.  

The photos that you attached a very helpful because they show very well the
concerns that you describe. If one of your concerns is to have the teeth appear
more straight, then I would consider minor orthodontic movement prior to doing
any major cosmetic dentistry.
If you simply wish to have the color and shape appear more uniform, then
something fairly conservative like bonding might be a quick and simple fix for
you. If, however, you'd like to make some fairly significant changes to the
shade and the shape, then I would recommend porcelain veneers following some
minor orthodontic movement. By moving the teeth first, the veneers would all be
uniform in thickness and the amount of preparation done to the teeth would be
more conservative.
I also recommend doing tooth whitening prior to any cosmetic procedure so that
we can first make the teeth as light as mother nature will let them get so that
your new porcelain veneers or bonding can be as light as possible.
I hope that you found this helpful,
Dr. Champagne

Composite bonding can be done in one visit, and is the least expensive option to change these teeth. While composite bonding will have to be redone at some point, it is a permanent material, so if you are happy with how the bonding looks you won't need to do anything else immediately.Bonding would be the least invasive (meaning less tooth structure removed), and quickest way to get the results you want. Composite bonding isn't quite as durable as porcelain, it will wear out at some point, but you may get the result you want with less expense. If you don't like the bonding, you can always do porcelain veneers later. Veneers are a great option for changing your appearance, but they are not maintenance free or unbreakable. The things that can damage a natural tooth will damage a veneer as well. Veneers that have been properly done and well cared for, can and do last a long time. Your veneers may very well last longer than you or your dentist expect. I think it's realistic to expect that they will need to be redone at least once, however. This would apply to porcelain veneers, composite veneers will not last as long or be as color stable.

After evaluating your photos it is my professional opinion that either direct composite bonding or porcelain veneers could be utilized to improve the appearance of your front teeth.  However, that being said, you would get a significantly better result, and a longer lasting one I might add, by having porcelain veneers instead of plastic (composite) bonding.  Absolutely no question in my mind about that!  Just make sure to choose your dentist carefully.  Ask to see photos of the bonding or porcelain veneers he/she has personally done.  If you research porcelain veneers carefully, you'll notice that there are many horror stories of patients going to "the wrong dentist" and not being happy with the results.  A good cosmetic dentist should be able to give you stunning results!

Anyone saying porcelain veneers debond frequently simply lacks experience.  A properly prepared and bonded porcelain veneer is actually more durable than full coverage porcelain crowns due to many factors and usually LESS prone to decay.  Judging from the photos, the best result would come from porcelain veneers, but will require effort to find the right dentist to do them.  Not all dentists are properly trained, which can result in unpredictable outcomes.  It likely will cost more to see a competent dentist, but will certainly be worth it.

All-ceramic crowns are an excellent choice.  I see veneers as more prone to debonding and recurrent decay, "cosmetic bonding" as quick to discolor.  My opinion?  Do it right ONE time.  A well placed and well maintained crown can last many decades, perhaps a lifetime.  Spend a little more, do it right, get on with your life.  In my practice we see zero complaints about anterior crowns.  I hope this helps.