EXPANSION DEVICE FOR DENTAL ARCH OF UPPER JAW

摘要

PURPOSE: A device for correcting a width of a dental arch of an upper jaw is provided to prevent the roots of teeth from weakening by giving an orthodontic force to the dental arch through a pushing unit. CONSTITUTION: A width correction body unit(100) generates an orthodontic force. A pushing unit(200) widens left and right by the width correction body unit and gives an extension force to the dental arch. The width correction body unit includes an expansible and contractible body(110) and a width control unit. The pushing unit includes one or a plurality of first side members(210) and one or a plurality of second side members(220).