Teeth Sanding/Shaving Information?

i have a whole mouth full of crowns its not great for ur teeth but if the only two in the front nothing to worry about the shave a mm as a stardard rule trust me they give u pain killers i had all my teeth done in the chair its fine they will be sensative for awhile but in my case more severe as i have every tooth capped it can cost u up to four grand in australia but i did my whole mouth in vietnam for six and the dentist in melbourne said there great hope this helps