I didn’t take care of my teeth in middle school and got cavities. In my early twenties, I bleached my teeth, replaced my stained fillings and got resin infiltration on my white spots. Most of these were near the gumline, but I also have a little bonding on my bottom front tooth to hide a chip. I want to get Invisalign to fix a slightly crooked front tooth and gap, but I heard attachments will fall off if you already have composite on your teeth. Is this true?