My teeth are worn down from grinding them when I was younger, am I a candidate for porcelain/zirconium veneers? (Photos)

I know a quick fix  is so desirable but from my experience may not produce the best and longest lasting result...Braces or invisalign will take longer than you may like and add to the cost but straightening your bite with resultant esthetic goals met may satisfy your health and appearance..If smile not as beautiful as you would like you can do cosmetic dentistry afterwards.

Thank you for your question, a lot of good topics addressed here! Good thing you have been wearing a night guard for the past 10 years, that's a great habit to have!
When teeth are in malocclusion ( not coming together properly ) its not uncommon for them to wear unevenly, especially if you were grinding your teeth. I agree with your dentist, braces would be the best place to start here by aligning your teeth and fixing your bite. I don't agree with placing bonding on the upper and lower teeth once the braces come off. Bonding is a composite resin material ( plastic ) that discolors overtime and loses its shine. You have to have an extremely talented dentist to hand craft 12 composite veneers and make them look good. 
Now, this brings us to your next question, would veneers be an option? In your case, veneers would be a good option to both correct your bite as well as improve the appearance of your teeth. eMax porcelain is the strongest and most esthetic porcelain available. When placed by a skilled cosmetic dentist, you should get decades of use out of them. 
I would still recommend wearing a night guard if you do decide to have the veneers placed. Your dentist will have to make a new one since the old one will not fit after the new porcelain is bonded

Hi:Since even with braces the worn out teeth have to be restored, I suggest to do emax veneers instead of braces. Best,Dr. Maddahi

Everybody would love to have a quick fix and the problem to be solved but this does not always result in a desirable outcome. Braces would be the best option to align your teeth first and then to have some bonding work down to help with the grinding. If veneers are put on your teeth currently they may look too big and feel odd and are also more likely to break. 

Regards,
Sandeep 

best option in yr case is braces / aligner treatment for setup of proper occlusion followed by deprogramming splint therapy.

Hello. I would recommend braces as the optimal solution to improve the appearance and function of your teeth. From the supplied picture teeth preparation (grinding) would be aggressive for veneers. Braces will be more conservative and beneficial to align your teeth and improve appearance and function.. 

Your teeth grinding will not stop just because you have veneers placed. The danger there is if you already "ground down" your natural teeth, you'll likely do the same to your new veneers! Fixing your bite with braces is a very important step here, making certain your deep bite is corrected this way and without removing any premolars. Once braces are finished, you may be pleasantly surprised by the appearance of your new smile and not feel the need for veneers. However, if you do still want to improve the appearance of your teeth with veneers, they can be done much more conservatively once your teeth are better aligned. Good luck!

I would agree with your dentist on prescribing braces / orthodontic treatment for you. Once the teeth are aligned you may then proceed with porcelain veneers, which would be more cosmetically appealing than dental bondings. Proceeding with just veneers without prior alignment may produce the results that will not be as ideal especially for lower teeth. The expense is a factor yet the result / outcome will be well worth it. Good luck, Dr, Daniyar

Your dentist is correct about the braces. You will have a much nicer and more cost effective smile if you do braces first. After braces you can choose between veneers or bonding or possibly doing nothing.

Braces are the best option,but it will take up to 1 year ,and at the end you will have the same teeth, but all straight, your oclusion,will change the way your teeth are,and grinding now it will be better,so this can be a good solution.now if you do not want to wait, and have a complete smile makeover,with veneers and crowns. this can be done in just a couple of days,and certainly you will have great results,shape, size and even color can be done.you will love your smile, and you will have great results.