Screws and metal plate after chin advancement (genioplasty). Should I take them out ? (photos)

I had a surgery 12 years ago in France and never thought that I should take this metal plate out because the surgeon told me I could either leave it or take it out but I have several concerns., I have a little fold on the cin; I am wondering if I take the screws and plate out will enhance the projection. I have had several root canals done and I am wondering if it's not due to this procedure because it was only on the lower front teeth.