Digital orthodontic extrusion system for complex crown-root fracture of anterior teeth: A technique report

Ao Sun1, Xiaoyan Feng2, Li Chen3

  • 1Attending Faculty, Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Zhejiang, Hangzhou, PR China; Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, PR China.