What are the best options to fix a gummy smile of mild to moderate severity? (photo)

There are 2 ways to align crooked teeth. 1) Orthodontically. The teeth are moved into the correct place using braces or aligners (such as Invisalign). This is the least minimally invasive option. Depending on the case, sometimes cosmetic alignment of only the front teeth may be done to keep treatment time short. However, this may sometimes look strange if the rest of the teeth are not very well aligned. 2) Prosthetically. This is the fastest method to align teeth, and can be accomplished within a matter of weeks.

The 2nd picture of your braces is not as clear as your pre-treatment photo so I will have to make some assumptions. In your pre-treatment photo, it appears there is some minor crowding of the upper teeth. Your lower teeth are not visible. The lower (front) teeth may have started to protrude and crowd forward along with the upper front teeth. I am not sure if you had any extractions done during your first or 2nd treatment. Some patients who have had extractions may feel that their tongue may be overcrowded or that their facial profile is becoming more flat.