We measured the bonding strengths of luting cements to polished titanium surfaces using both tensile and shear bond tests. Seven kinds of luting cements (poly-carboxylic and resin-based cements) were investigated. Relationships between the tensile bond strength (TBS) and shear bond strength (SBS) were evaluated. The fractured surfaces after the tensile bond test were observed, and the tensile strengths of luting cements were also measured. The bonding strengths of resin-based cements were higher than those of poly-carboxylic cements, and the tensile strengths of resin-based cements were also higher. SBS was significantly higher (1.6〜5.9 times, mean: 3.4 times) than TBS, and the relationship between TBS and SBS showed a different tendency with each type of cement. We concluded that only the measurement of the bonding strength was not sufficient to evaluate the bonding characteristics of luting cement. When we compared different type of cements, observation of the fracture mode and measurement of the tensile strength of luting cements were also necessary for exact evaluations.