Objective:To evaluate the effects of self－made all ceramic pin on the micro tensile bond strength of a rensin cement to dentin. Methods:Forty extracted molars were selected and randomly divided into four groups,group A,B and C were prepared with an internal pin channel,then the all ceramic pins,self－threading retentive pins and resin composite pins were inserted into dentin respectively,group D was prepared with no internal retentive features. All subjuects were filled with composite resin. For the microtensile nontrimming technique,10 beam－shaped specimens per group were obtained. Each specimen was loaded in tension until failure and the fracture mode present were observed under stero－microscope. All the results were analyzed statistically. Results:The micro tensile bond strength of group A and B was statistically higher than that of group C and D(P < 0.05),while there were no significant difference between group A and B,or between group C and D(P > 0.05). The breakage modes were observed mainly between the dentin and adhesive interface in group A,C and D,while the dentin cohesive fracture was appeared mainly in group B. Conclusion:IPS e.max Press ceramic pin can significantly enhance micro tensile bond strength of a rensin cement to dentin and is considered as the novel and useful dentin pin.