Appliance for the treatment of Angle’s second skeletal classes. Corrects second skeletal classes by repositioning the dental arches in the key of first class resulting in reconditioning of the temporomandibular joints (TMJ).

• used in mixed deciduous and permanent dentition
• corrects skeletal class IIs by repositioning the dental arches in a class I key
• corrects midlines and balances TMJs
• corrects dysfunctional vicious habits
• results in pre-alignment of the teeth