Potassium fluoride,anhydrous
           Potassium fluoride,extra pure
           Potassium fluoride,Granular
           Silicon Dioxide
           Hydrofluoric acid
           Synthetic Cryolite
           Potassium Fluoaluminate
           Ammonium bifluoride
           Potassium Bifluoride
           Aluminium fluoride
           Sodium fluoride
           Potassium Fluorosilicate
           Fluorosilicic Acid
           Sodium silicofluoride
           Potassium Hydroxide Flakes
           Magnesium Fluoride
           Magnesium fluorosilicate
           Barium Fluoride
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Study three kinds of resin cements on the fracture strength, after machinable glass-ceramic bonding. Methods:collect 60 human teeth, the long axis vertical teeth were ground surface enamel; after the IPS e.max CAD ceramic blocks processed into a sheet-like test piece, with the volume fraction of 9.5% hydrofluoric acid gel treatment, were randomly divided into three groups , n = 20, respectively, using Multilink multifunctional bonding system + Monobonds-S (A group), Rely X Ultimate resin cement + Scotchbond universal adhesive (group B), Rely X Unicem 2 resin cement (group C) bonding; each tile adhesive and then divided into two subgroups 1 and 2, each 10, A1, B1, C1 group without thermal cycling, A2, B2, C2 group thermal cycles. All tiles breaking load test on the universal testing machine. Results specimen fracture load values A1, A2, B1, B2, C1, C2 group were: (1 763 ± 128) N, (1 563 ± 115) N, (1 861 ± 135) N, (1 676 ± 137) N, (1 446 ± 153) N, (1 038 ± 95) N. Each specimen fracture load group differences was statistically significant (F = 52.279, P0.001), different kinds of resin cements (F = 94.104, P0.001), thermal cycling (F = 63.818, P0.001) respectively porcelain sheet breaking load has a significant influence. LSD test results show that, A, B, C 3 groups specimen fracture load value difference was statistically significant (P0.05), breaking load of the highest among Group B, Group C minimum. Conclusion Different kinds of different resin cements on the fracture strength after bonding tiles, cement tiles and resin handle the tooth surface may increase the fracture strength adhesive tiles after. Thermal cycling reduce fracture strength after bonding the tiles.