https://killertestimonials.com/important-things-to-be-aware-of-when-using-invisalign/ The process shouldn’t be difficult. There will be times that you experience pressure on your teeth, particularly after you receive a new aligner tray, but it shouldn’t hurt. 3 days must pass before you feel any pressure. The aligner tray of Invisalign must be worn at least 18-22 all day. The tray must be…