Has anyone with some crown teeth had success with the Invisalign attachment placed on their crown tooth without it falling off?? Because I have 1 crown tooth and my dentist needs to put an attachment on that tooth in order for my teeth to shift for the smile I want but he tried to put the attachment on 7 times and it wouldn’t stick. So I just want to know if there’s anyone who had an attachment actually stick for a long time on a crown tooth and what did that dentist do to get it to stick to the porcelain crown?