Will high arched palate influence orthognathic surgery result?

Yes: Please discuss this with both an orthodontic specialist and an oral surgeon. High narrow palatal vault indicates a side-to-side skeletal problem that, in an adult, requires surgically, assisted palatal expansion. If transverse skeletal malrelationship is not addressed, prognosis may be severely compromised.

Of course: The high arched palate is always taken into account during the planning phase and surgical phase for orthognathic surgery.