I'm not sure I totally understand what you are asking, but I think it is normal for your teeth to shift during your myobrace session so that your occlusion feels off at first when you take out the myobrace, and then to feel like you are losing the progress as your occlusion comes back to "normal" with the myobrace out of your mouth. Over time, very gradually you should lose less and less of the progress after your sessions so that your teeth come to a new balanced occlusion. On a small scale I've seen this during the first week of my treatment with my one misaligned lower incisor which shifts back out of alignment when I take out the myobrace, but each day it's getting closer and closer to fitting in line with the surrounding teeth.

ok. I was wondering if it's really helps or not. But I hope it's like you think, that it gets better over time.

How long have you used the myobrace?

I've only been using mine for 8 days. I forget where I read someone describe how their teeth seemed to relapse after they took their myobrace out every morning but over time this happened less and less. Maybe it was on lookism. I posted the best documented adult myobrace case I could find in the success stories thread. I could only upload one picture so I posted the overall before and after of almost 9 months of treatment (  /community/community/case-discussions/your-success-story/paged/3/#post-6013 ). However, if you look at her first three months of pictures they don't show much change. It's only when she gets to about 5 months of treatment that the changes become very discernible.

Interesting! Thanks.

Is it difficult for you to bite together with the myobrace? It requires my jaw muscles to work a lot to keep the myobrace in the right position.

I've been using it for almost four months now, but it's more comfortable now compared to when I started  the treatment.

Yes, I feel like I am using my masseters to bite together. I also worry that I might be recruiting my lip muscles a little to hold the myobrace in place. However, even after the first week it is requiring much less active effort to get my teeth down into their channels, especially as my misaligned lower incisor is starting to to reposition. I'm using the A2, and it probably would have been easier to keep in position if I started with the softer A1. I'm hoping that I will soon be able to sleep through the night with it in place.   

After 8 days of use, I was able to sleep through the night for the first time last night with the myobrace in place. I definitely woke up a few times and noticed that I wasn't biting together and my teeth weren't as far into the channels, but at least I made it through the night without having to take it out to get comfortable. I think my misaligned lower incisor stayed a little closer to where it should be after a long overnight session than it has after my shorter daytime sessions.