Modern Dental Laboratory (DG) Co., Ltd. 003 Elastic Mandibular Advancement (EMA) appliance

The Elastic Mandibular Advancement appliance is a modified fuctional prthodontic appliance. The modifications are:1) clasps are not needed as the appliance is retained firmly to the teeth by pressure formed plastic into the undercut areas. Each tray holds the teeth in their present location not allowing tooth movement. 2) the bite is opened as in the SNOAR and NAPA appliances but not in one fixed position. Multiple bite openings are possible because of removable bite blocks or bite planes of varying thickness. 3) the mandible is advanced as in both the SNOAR and NAPA appliances except not in fixed position, but in various amounts of forward advancement because of removable, replaceable elastic bands or straps to pull the mandible forward.