I won’t get into why I did any of this yet, but I cut my top retainer with scissors; so that they only fit up to my canines. Then I sanded the retainer down on the top (with sand paper) so that only half of the retainer was left from top to bottom. I then wore that retainer along with a fully intact bottom retainer and clenched a lot. My upper teeth moved up into my gums and i now have a speech impediment or something. I can’t talk the same at all.