Clear invisible retainers are very popular orthodontic retainers due to the nature of them being almost invisible. Retainers are made in our Orthodontic Laboratory Department by skilled Dental technicians. . The pressure formed custom made retainer is designed to hold the teeth in their final position after fixed orthodontic brackets and archwires have been removed. A clear invisible retainer is made by having impressions taken by a dentist and the laboratory will vacuum or pressure form them using a EVA, PVC or similar material. No metal components are required, therefore giving a much better appearance to standard orthodontic retainers.