〔Abstract〕 To investigate the fracture resistance and fracture mode of the tooth after IPS e-max Press occlusal veneer repair. The occlusal surfaces of 7 mandibular premolars were ground evenly for 1. 5 mm,simulating the morphology of occlusal surface of severe wear tooth,and the occlusal surface was prepared with IPS e-max Press. After the adhesive was cemented,static loading test was performed on each specimen until cracked,and the fracture load value and fracture mode were recorded. The fracture load of the specimens was much higher than the normal masticatory force,which could meet the clinical repair needs. The fracture mode was mostly limited to the fragmentation of the restoration or the damage of the tooth in a small range,which was conducive to the secondary repair. IPS e-max Press occlusal veneer is a minimally invasive and ideal method for the restoration of severe tooth wear in premolar.