@adbubwastaken@misspacthesis Several of those are adult premolars, that are often extracted prior to starting braces. Some of the other ones with roots appear to be primary(baby teeth) that were also likely removed prior to starting braces. This is my best conjecture based on the pic(source: I am a dentist)
@slugbox Besides the specialists Gutty mentioned, I'd add periodontist to that list. My upper lip frenectomy was done by a periodontist. They are very good at anything involving soft tissue in the mouth. (Source: I am a general dentist)