The appointment two weeks ago where I got back the modified braces went exactly as I had hoped!
When I was called back into the treatment room, my models with the plates were already laying on the table. Taking a quick glance I was able to see that the upper plate does go back quite a bit and that the front is pretty thick. The ortho said that she can't imagine anyone liking a plate that fills the palate that much. I mentioned that I'll probably be fine with it if that stops the acrylic from digging into my gums. She mentioned that those marks are clearly visible in the impressions, so we can at least give it a try.
Before getting into more details, here are images of my new-ish plates:
https://cdn.discordapp.com/attachments/863502137362743399/914871058593624124/1.jpg
https://cdn.discordapp.com/attachments/863502137362743399/914871059168235592/2.jpg
https://cdn.discordapp.com/attachments/863502137362743399/914871059923206154/3.jpg
https://cdn.discordapp.com/attachments/863502137362743399/914871060460089374/4.jpg
https://cdn.discordapp.com/attachments/863502137362743399/914871061080838154/5.jpg
https://cdn.discordapp.com/attachments/863502137362743399/914871061659648060/6.jpg
https://cdn.discordapp.com/attachments/863502137362743399/914871062297215036/7.jpg
https://cdn.discordapp.com/attachments/863502137362743399/914871062804705290/8.jpg
https://cdn.discordapp.com/attachments/863502137362743399/914871063509364758/9.jpg
https://cdn.discordapp.com/attachments/863502137362743399/914871064138502154/10.jpg
https://cdn.discordapp.com/attachments/863502137362743399/914871150117535764/11.jpg
When I sat down, the ortho first showed me the lower plate. The thick posterior bite plane has been removed, making the brace look quite delicate compared to before. The acrylic on the inside goes back further than before, stopping after my wisdom teeth. She explained that she had the tech incorporate a spring to derotate my 38. She also noticed that my 48 is rotated slightly, so another spring for that one was added as well. She inserted the lower brace into my mouth and it fit surprisingly well on the first try. There were a few rough corners and edges, which were fixed, and that was it for the lower plate.
Then came the upper brace. Upon inserting it, it hung quite low and didn't feel right. There was at least half a centimeter between it and the roof of my mouth (that's 0.000003 miles for the non-metric speakers). I tried to tell that to the ortho, but whichever sounds came out of my mouth were very far away from what I wanted to express. I just couldn't talk. I've never had such a strong lisp. Not even when I initially got the braces. Somehow the ortho was able to understand whatever I tried to say. After some grinding and me saying where the acrylic was poking into my gums, the plate fit better. It wasn't perfect and there was still a little gap between my palate and the acrylic, but it was good enough. The next step was to investigate the bite plate. She had me bite down several times and used marking foil to see where my teeth and the bottom plate were hitting the top plate. She removed some acrylic from the bottom plate and the right side of the bite plate to ensure that only my left canine touches, to intrude it.
After everything fitted and was done, I asked her if she could polish the plates to remove the roughness from the drill bit, which she did. No springs were activated as I should get used to the new braces first.
She stressed repeatedly, that if there is any problem or anything that bothers me, especially with the palatal coverage, I should call immediately and make an early appointment even though my next scheduled appointment will only be two weeks after.
Since then, I fully enjoyed the new braces. The upper plate almost entirely covers my hard palate except in the back middle, where it could go back slightly more for my liking. It is quite thick in some places, especially where it becomes the bite plate. The bite plate itself feels crazy huge in my mouth even though it doesn't look that large to me just looking at the brace. My tongue has very little room and needs to sit quite far back.
I expected the lower brace going back pretty far not to be much of a problem. Surprisingly, it does interfere with my tongue's normal resting position. My tongue now rests on top of the acrylic of the lower plate and in the vertical gap between my teeth created by the bite plate, making the space feel even more restrictive. The springs for my lower wisdom teeth poked my tongue in the first few days, but I got used to it.
Speaking is a whole different beast. It's similar to when I first got the braces, but even more severe. I've actively practiced talking and reading aloud. It's gotten better and I'm understandable, but I notice a strong lisp and quite some mumbling. In retrospect, while previously my mouth was very full, the "talking" areas weren't that inhibited and only few sounds were affected. The bite plate and full palatal coverage do interfere strongly with most sounds.
Due to my negative-pressure-sucking the upper brace seems to have deformed a bit and now fits snugly in the roof of my mouth. I can't feel or see any marks created by the acrylic in my gums, so that part seems to be working as I hoped it would. Unfortunately with my tongue not having much space, it presses into the expansion-screw slots, which hurts at times. I did think about these rough edges during the last appointment and wondered if I should have the ortho smoothen them. But I thought that maybe they won't be a problem this time. Welp, guess I'll ask her to smoothen the edges during my appointment tomorrow.