My experience with Breezy Braces
I just got them this week. Here are a few points
Prefaced with: I've had both braces when I was younger and Invisalign just 5 years ago. The original braces straightened things a lot but I think I didn't follow the rubber banding procedures right and so my bite is off. The Invisalign was useless because I never wanted to use them and so the treatment didn't even work. I ended up wearing them every night but it honestly at the start of the day they would completely shift back and I was afraid I was damaging my teeth so I stopped.
I started using Breezy Braces because I wanted to have something permanent that would prevent me from removing them all of the time and finally get the last bit of imperfections I wanted fixed and maybe my bite.
Tongue soreness: As most people are saying. The first night was not an issue. The second night my tongue was sore as heck.
Lisp: I called my friends to chat and practice speaking but it was full on lisp - my friend said I sounded like Mike Tyson. Unfortunately this is a problem because I have a speaking role and client facing role at my company and so it may not last if this keeps going on.
Struggle: As others said too, the list comes from the interference of foreign object in your mouth and on your teeth where your tongue needs to hit to make hard consonant sounds, but it also comes from it being so sore you don't even want to try.
Teeth pain: Additional pain comes from trying to chew on your molars. I can barely eat bread and it's mostly just trying to mash the already soft foods enough to swallow - not even fully chewed.
Food: What else sucks is that when you do chew into anything the food gets directly stuck into the braces. Your tongue is so sore and the brackets so sharp you end up letting the saliva dissolve the food and just give up (I barely eat anything).
Cleaning: I have no idea if the tooth brush is getting all the right spots. Remember, these are behind your teeth and so you cannot truly get in the inner portion (under the brackets on the bottom and above the brackets on the top). And, the whole "being able to floss" thing is poorly executed. The wires are bent so you're supposed to be able to floss, but actually you're unable to floss all the way to the gum line because the wire is actually in the way and some don't even allow you to hit the gum
Having braces behind your teeth is a good idea and there is obviously a market for it, but instead of adding the feature to "allow you to floss", they might as well just created a straight bar wire and required you to use floss threads because getting food constantly stuck where you can't do anything about because your tongue hurts so much is just more salt in the wound!!
The 3rd week is when the pain wasn't constant and I didn't need to take Ibuprofen. My coworkers said they forgot about the lisp and most people didn't notice it unless I told them about it.
What still bugs me is that hard foods like granola really get packed into the wires and will just stay on the brackets until you clean them off and forget it with vegetables. I've resorted to just drinking a fruit protein shake with kale and spinach rather than eating vegetables at all.
An example of issues with vegetables would be even eating a margherita pizza because the basil will just get stuck and you will feel most of it. What you don't feel is still visible when you open your mouth so just watch out!
What I do to alleviate some issues is after I clean out my teeth with a typical routine of toothpick, floss, brush, waterpik every night, I put on a new layer of wax on my bottom front teeth so my tongue doesn't get sore at night and keep it during the day to prevent food from getting under the wires.
I wouldn't recommend putting wax anywhere else because it just gets removed from food you chew and causes your lisp to get more noticeable.