I am interested in a minor sliding genio.. around 3mm projection, but also interested in HA/bone paste put in my sulcus so this area would fill out as well. Is this possible? Also, what about HA to my jaw angles? Lastly, are most sliding genios accompanied by bone grafts to fill out the dents caused by moving chin forward, and where are they harvested from? Under what circumstances would bone grafts not be used? Is it possible to do a SG without causing a person's face to lengthen? Thanks!