How do I project my maxilla

[matthaias]

I am 17 and have a recessed maxilla as well as a narrow pallet.
I saw someone that Said that you can use a flat Mouth guard from reviv.
Does this work?
I also Hard braces which Sonnenhöhe worsened my maxilla but fixxed my teeth.
I don’t want to fuck my teeth again.

 

[obscuredusk]

not much you can do, palate expander might help