How Thick is a Zygomatic Arch?

i had a few facial fractures and it left my zygomtic arch to stick out a lot. I went to see a craniofacial surgeon and he wants to just shave some of the bone down. However, i know that i would need to shave off 5mm to get it symmetrical with the other side of my face. I'm worried that the arch isn't thick enough to take off 5mm and he might only take off just a few milimeters(which i wouldn't want). what is the width of the average male arch? Should i recommend re-fracturing and pushing it in?

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