Are the aligners annoying to wear?

Are the aligners annoying to wear?

The first 3-4 days that a patient wears trays for the first time may have some transient disturbances: increased salivation, slight defect in the pronunciation of some letters, sensation of pressure or soreness on the teeth.
All of these problems are transient and once the patient gets used to it they will not even notice that they are wearing the trays.