Orthodontic aligners are sets of translucent (see-through and clear) stents that move teeth slowly over a period of weeks or months. They are a great alternative to traditional braces (wires + brackets) in suitable cases and have become very popular in the past decade. The aligners are worn 22-23 hours per day (only removed during eating) and are switched usually every 1-2 weeks. They are barely visible when worn so there is minimal cosmetic concern for those who are deterred by the traditional methods of using metal wires.