Objective: To analyse the causes and clinical features of limited mouth opening related to upper wisdom teeth.

Analysis of the eruption of the third mandibular molar of 1907 young adults from 4 different nationalities;

Comparative study on the strain of the maxillary complete denture base in occlusal interferences at different sites;

The clinical study of socket enlargement with an elevator and traditional chisel applying in extraction of impacted mandibular third molars;

The clinical observation of the extraction of impacted mandibular third molar by high-speed turbine

WT5”BZ]In this paper, the producing dynamic images, the producing and realization of sound, the design of man machine of multimedia teaching branch are specifically introduced in the Lower third molar Intelligent Integrated System.