Digital techniques are widely applied into jaw defects reconstruction. Influence of surgeon′s personal factors on surgical results could be greatly reduced. The combined pattern of grafting bone segments and their fixed position in defect area have direct effects on the final results, and should be considered as a form of maxillo-mandibular relationship determination. Digital technology is an important basis for its realization. In the design process, the determination of the space position of the graft in the recipient area must follow some basic principles and methods. Only when the esthetic and masticatory function requirements are considered, can the ideal maxillo-mandibular relationship be obtained. In this paper, the principals and methods of maxillo-mandibular relationship determination and its application in digital jaw defects reconstruction were summarized, in order to provide clinical references and to improve the quality of jaw defects reconstruction.

Computer-aided design; Dental occlusion; Free tissue flaps; Jaw defects reconstruction