Characteristic facial features of Class II division 2 malocclusion (Class II/2) are an obtuse interincisal angle, retruding lips, a gummy smile, and a concave and shortened lower third of the face. Oral examination commonly reveals a deep bite, retroclined maxillary central incisors, and anterior teeth crowding.1,2,3,4
The treatment options for Class II/2 are growth modification, dental compensation, or orthodontic treatment combined with orthognathic surgery.5,6 This case report presented the use of improved super-elastic Ti-Ni alloy wire (ISW; developed by Tokyo Medical and Dental University, Japan)7,8 for the treatment of Angle Class II/2 with an unstable mandible position.
The properties and characteristics of ISW are super-elasticity, shape memory, as well as shock and vibration absorption property.7,8. This article describes the experience of treating a case using ISW combined with intermaxillary elastics (IMEs) to correct a deep overbite by proclining the maxillary incisors. This helped the patient to gain an aesthetically pleasing smile with satisfaction.