Abstract： Objective To evaluate the bond durability of glass ceramic to self-adhesive and conventional resin cements.Methods Maximum water sorption and solubility of two resin cements(A:self-adhesive type,G-CEM;B:conventional type,Linkmax HV)were measured during 6 week water storage.And their surface Knoop hardness number was measured at 0.5,24 h and 6 week after irradiation.Sixty-four glass ceramic samples were or were not silanized with one of the three silane coupling agents(A:Monobond S;B:Clearfil Ceramic Primet;C:GC Ceramic Primer),and then cemented with two resin cements.The micro-bond strength between the two cements and glass ceramic were measured at baseline and after 30 000 thermal cycle.Results Cement A had higher water sorption[(79.62±5.63)μg/mm～3]and solubility[(4.78±3.33)μg/mm～3]than cement B[(35.03±3.33)μg/mm～3,(0.00±0.00)μg/mm～3].Cement A and B could achieve maximal surface hardness at 24 h after irradiation,and this was maintained during 6 week water storage.After 30 000 thermal cycle,the micro-bond strength between unsilanized glass ceramic and cement A or B was(0.00±0.00)MPa,and those between cement A and silanized glass ceramic with silane coupling agent A,B and C,were(2.86±3.25),(12.75±1.55)and(11.98±2.35)MPa respectively[for cement B,the data was(5.15±5.20),(10.94±3.30)and(14.18±3.13)MPa].No significant diffrence was found between the micro-bond strength of cement A and that of cement B with glass ceramic.Conclusions Self-adhesive resin cement can achieve similar bond durability to glass ceramic as conventional resin cement does.