〔Abstract〕 Objective To evaluate the effects of low temperature plasma modification on the surface morphology and bonding durability of zirconia ceramics.Methods 180 pieces of zirconia ceramic(Y-TZP) were randomly divided into 5 groups(n= 36). Group A:blank group; Group B:sandblast group; Group C:nitrogen( N2) plasma group; Group D:oxygen(O2) plasma group; Group E:argon(Ar) plasma group. The surface hydrophilicity and microstructure of zirconia ceramics were observed,and the changes of surface elements and functional groups were detected. Each group of bonded specimens was randomly divided into two subgroups(n= 15). After receiving 0 and10 000 cycles of heat and cold,the shear strength was measured. The measured results were statistically analyzed and the fracture mode was analyzed.Results The surface contact angles of groups B,C,D and E were significantly lower than those of group A,with statistically significant differences(P<0. 001). Compared with group A,the surface morphology of group C,D and E did not significantly change,while that of group B significantly changed. XPS showed that the surface carbon decreased,oxygen increased and carbon/oxygen ratio decreased after plasma treatment. SBS results showed that the immediate shear bonding strength of group A was lower than that of the other four groups(P<0. 001),and there was no significant difference in the immediate shear bonding strength of groups B,C,D and E(P>0. 05);After artificial aging,the shear bonding strength of group A was significantly lower than that of the other four groups,and the difference of shear bonding strength between groups A and B before and after artificial aging was statistically significant(P<0. 001).Conclusion The zirconia ceramics achieves better bonding strength and durability with resin cement through three kinds of low temperature plasmas,without changing the surface morphology.