The brace when adjusted monthly/correctly can widen the jaw/straighten teeth, etc. and works like magic...naturally this plays with the skull plates, but having a narrow crowded jaw does as well.
The bad thing is the metal/glue, etc. and my only warning is BEWARE, if you have any suicidal thoughts after all this metal/glue was put in your mouth, have it all removed imedietly. Such poisons can mess with a person's life, but my guess is 98% can handle it, while a few it can kill them or send them over the top.