There are many problems in clinical dentistry could be related with biomechanics, including orthodontics, mandibular plastic surgery, dental restoration and implantation, etc. Biomechanics now is one of the scientific bases for stomatology. The fundamental principles and approaches of dental biomechanics have been widely used in basic research, solving clinical problems, developing new appliances and innovative technologies in dentistry. This paper briefly reviewed the major dental biomechanical research fields and its main methods.