Can my bottom crooked tooth be straightened with porcelain veneers? (Photos)

You would be a candidate for porcelain veneers if you did not want to revisit orthodontics.  8-10 veneers would give you the most optimal result.  Good luck.  

u have both options open . as u have good teeth so , u can continue with invisalign. invisalign FULL is ideal option for u because u have bolton's discrepancy. i feel , yr doctor choose another option and thats why its not fully corrected.but now if u want to shift to veneer , u can proceed with that also. lower 8 or more porcelain veneers are recommended.   

Thanks for your question and I completely understand how you feel about doing Invisalign again! In reality, Invisalign doesn't always finish the way its projected on the computer.
Veneers are an excellent option for teeth that are slightly crooked and not perfectly straight. These thin shells of porcelain are permanently bonded on the front of your teeth to correct many cosmetic issues, including crowding. 
Because your teeth are overlapped and stacked in front of each other, I would recommend a minimum of 4 veneers. Even with veneers, your teeth can move back so make sure you wear a retainer nightly!

Hi, thanks for sending your pictures. The short answer to your question would be yes, Veneers can enhance the esthetics of your teeth and make the lower teeth appear straight, you would have to consider have multiple placed on your lower teeth to match properly.  I am surprised to see that your orthodontic treatment wasn't completed to the extend that would have been possible. Feel free to come see us to discuss your needs further. All the best.

Hi:You can straighten your teeth with porcelain veneers.  Consult with a experienced cosmetic dentist and have a wax up mock up of your teeth made to see how it will look prior to starting the procedure.Best,Dr. Maddahi

I can understand your disappointment. You would not get the desired result from a veneer here, and more importantly, a veneer would not stabilize this area and keep it from continuing to become more and more crowded. The best way to correct this, and to prevent it from progressing is to get the tooth, that is being crowded out, back in line with its neighbors...shoulder-to-shoulder so to speak. These teeth will all resist crowding better as a team. It looks like you have beautifully shaped large incisors in this area that tend to be a little triangular, or wider at the biting edge. I don't know if your dentist performed any "interproximal reduction" before and during the progression of your clear aligner movement, but from what I am able to see there is still more than enough tooth structure/enamel to very slightly sand down the sides of each of these 4 lower incisors an create just enough space for the one the one that is crowded out to get back in line. Once it has, have a wire affixed to the backside of them to hold them there permanently. I understand that you've already tried the clear aligners, But I think with the proper amount of reduction you could accomplish your goal. 
Whatever you decide to do, be sure to address it sooner than later, that tooth is not likely to be done migrating and as it becomes worse it will begin pushing on the back side of the upper tooth that it is paired to bite with and one day you'll look in the mirror and you will see that the upper tooth is no longer in line with its neighbors but has moved, and will continue to move. You can think of it as a very very slow domino effect.

Good luck!

Based on the photos, you appear to be a good candidate for veneers to create more harmony and symmetry. Seek a cosmetic dentist who is experienced and has photos similar to your case.