This study evaluated the effects of elastic modulus and cellular characteristics of trabecular bone on the primary stabilities of dental implants， Artificial jawbone models with six values of elastic modulus (l37，123，475， 22， 1204， and 65 MPa) comprising three kinds of trabecular structure (solid rigid， and cellular rigid with closed-cell and open-cell characteristics) were investigated in terms of the peak insertion torque value (ITV)， implant stability quotient (ISQ)， and Periotest value (PTV) as measured using a torque meter， Osstell™ resonance frequency analyzer， and Periotest™ electronic device， respectively， All specimens adhered to 2-mm-thick short-fiber-filled epoxy sheets to mimic the cortical shell， and screw-type implants were placed in the models for measuring the implant stability， In general，the ITV， PTV， and ISQ increased with the elastic modulus of cellular trabeular bone， The differences in the primary stabilities of the implants between closed-cell and open-cell bone specimens (1204 versus 65 MPa) were 52% for ITV， 2-fold for PTV， and 8% for ISQ， Theregression correlation coefficient (R2) values between the elasticity of trabecular bone with a cellular (closed-cell) structure and ITV， PTV， and ISQ were 0，73 (with linear regression model)， 0，93 (with linear regression model)， and 0，89 (with logarithmic regression model)， respectively， These linearand logarithmic models demonstrate the strong correlations of the elastic modulus of trabecular bone with the obtained ITV， PTV， and ISQ values， Trabecular bone with an osteoporotic structure decreases the primary implant stability， Theuse of cellular artificial jawbones as experimental models revealed that the elastic modulus and osteoporotic trabecular bone influence the ITV，PTV， and ISQ primary implant stability parameters， Due to a similarity of trabecular structure， cellular characteristic of artificial bone might be more appropriate for obtaining aωurate values of the primary implant stability than solid-bone blocks.