MTM stands for Minor Tooth Movement and is a discreet and comfortable way to make minor corrections and straighten the teeth. A clear plastic aligner, made in the exact mold of the teeth, is worn daily. Theses aligners are virtually undetectable to others and are easy to take on and off. Every few weeks, a new aligner is worn by the patient and it works to slowly and comfortably make the teeth straight and create a perfect smile.