Abstract: Abstract : Objective Using intraoral scanner of 3 Shape Trios take digital impression to make all-ceramic inlay and evaluate its early clinical effect. Methods We selected 52 patients who underwent EMAXCAD all-ceramic inlay in Hangzhou stomatology hospital from march 2015 to march 2017. The digital impression is collected by the scanner of 3 Shape Trios and the inlays are made according to the standard procedure. After one year,50 inlays whose clinic effect were evaluated according to the modified USPHS criteria including anatomical shape、color matching、marginal discoloration、edge adaptability、surface roughness、proximal contact and secondary caries. . Results A year of follow-up results found that 82% of the cases had reached the A level of USPHS, while 100% of the cases did not occur secondary caries. Conclusion All-ceramic inlay made of digital impression in the mouth has good early clinical effect, the therapeutic method should be promoted

Key words: Key words: CAD/CAM, 3shape Trios, all-ceramic , intraoral scanner