Dr. Eric Liou is an associate professor and the immediate past chairman of the Faculty of Dentistry, Chang Gung Memorial Hospital & Chang Gung University, Taipei, Taiwan. He is also a visiting professor in the Department of Orthodontics, Showa University, Tokyo, Japan.
For the profession affiliations, Dr. Liou is currently immediate past president of the Taiwan association of Orthodontists, and immediate past president of the World Implant Orthodontic Association. He also is the ECM of Asian Pacific Orthodontic Society (APOS) and the editor of the APOS Trends in Orthodontics.
His main research interests are distraction osteogenesis, TADs, orthodontic tooth movement, platelet rich plasma, and bone physiology. Dr. Liou has numerous publications and presentations, especially on the topics of accelerated orthodontic tooth movement, maxillary orthopedic protraction, surgery first accelerated orthognathic surgery, and TADs.
Improvement of facial asymmetry, such as soft tissue lip cant or chin deviation, is considered only possible by combination of orthodontic and surgical corrections of the underline dental and skeletal deformities. Orthodontic treatment along has been considered almost impossible for the improvement of facial asymmetry, due to the fact that the effects of orthodontic treatment confine within dentoalveolar process and could hardly reach basal bones. It is therefore surgical orthodontics still is the only treatment modality for improving soft tissue facial asymmetry.
Interestingly, it has never been reported before to verify that orthodontic treatment could hardly improve soft tissue the lip cant and chin deviation. Interestingly, improvement of occlusal cant has recently been reported possible by using temporal anchorage devices (TADs) with minimal surgery or even by using Yin-Yang archwires without any surgery. The purpose of this presentation is to explore the effects and possibility of orthodontic treatment for improving soft tissue facial asymmetry without surgery, especially for lip cant and chin deviation.