I had orthodontic treatment for two years. My teeth were aligned well, and I got it because I was looking into protruding mouth and a receding chin. With Bibili treatment, they inserted a screw into the gum above it.
Honestly, the result is quite disappointing considering the two years it took.
My receding chin is still the same, and the protrusion of my mouth is only slightly improved ㅠㅠ In my case, I feel like double jaw surgery might have been the answer.