I would go and schedule an interview with an orthodontist instead of relying on the internet, here. "Orthrotropics" appears to be a registered trademark, which is, at the very least, a yellow flag.

A cursory search on details has broken this down to extractive / surgical vs. non-extractive / non-surgical orthodontics, the latter of which has proven to be effective before the palate and growth plates have fused -- in children.

Talk to somebody you trust with a degree in the field.