You are usually advised by your orthodontist to wear your retainers all the time for the first 2-3 months following the completion of your active treatment. If this is the case, wear your retainers all day and all night wherever you are.
license fee - a fee paid to the government for the privilege of being licensed to do something (as selling liquor or practicing medicine) license tax, licensing fee. medical specialty, medicine - the branches of medical science that deal with nonsurgical techniques.
Licensing is a relatively sophisticated arrangement where a firm transfers the rights to the use of a product or service to another firm. It is a particularly useful strategy if the purchaser of the license has a relatively large market share in the market you want to enter. Licenses can be for marketing or production.