I completely broke off half of my incisor a year ago. My dentist then added some compound to make the tooth "whole" again. In other words, one of my incisors is half "real" tooth and half compound. I recently started Invisalign treatment and I feel a lot of pressure on my teeth. I know the pressure is normal, but would the compound on my tooth be able to withstand that kind of pressure for 1.5 years of Invisalign treatment without breaking off? Thanks so much in advance for your help.