Hi, i have veneers on my 2 front teeth after i chiped one and bonding wouldn't hold up anymore. i have had them about 15 years and had them replaced once. i cracked one somehow and they both had to be replaced.
my experience is this - they shave down your natural teeth and since i had it done 2x, my natural teeth under the veneers are now paper thin. there is no going back once you have them. i also found it extremely uncomfortable to get put on, you get novacaine needles in the upper gums above your front teeth. these needles brought me to tears! if you don't have to do it, i wouldn't. i would go the ortho route first if you just need your teeth to be straight. if it wasn't for the chips, i would love to not have them. also, you can bleach or whiten so if your veneers are not as white as you want them to be, you can't lighten them. I am constantly aware of them and afraid i my crack or damage one, i never want to have to get them replaced again and i feel if i need to, my natural teeth wouldn't hold up to the replacement process again.