Is orthognathic surgery possible while not wearing braces? (photos)

The short answer to your question is yes some patients can
be candidates for orthognathic surgery without orthodontic treatment.  A physical exam would be needed to say
definitively but given that you’ve already had braces twice it is possible that
you would not need braces again.  However, a physical exam is needed to confirm that you are a good
candidate for orthognathic surgery without more orthodontic treatment.  Be
sure to research only board certified oral maxillofacial surgeons and then schedule
a consultation.  After your bite and jaw
alignment have been assessed a personalized surgical plan can be designed to
help you correct your overbite and achieve the look you desire.Be well and good luck!@norrisplastic

Yes it is possible but it depends upon the fit if the teeth when you move the jaw forward. You need to know that the bite won't be worse so if you get some models of the bite one can assess what the bite will look like with the jaw moved forward. We do Invisalign surgery all the time without braces but the teeth have to fit.