Abstract: Abstract: Objective To analyze and compare the precision among three methods of cavity preparation. Methods The dental implant on the resin patterns based on the bilateral posterior teeth loss was located by employing the simple template of dental implant centered on repair. Then the traditional method of preparing cavity by using twist drill step by step, the Br?nemark method of cavity preparation and the method of preparing cavity by using multistep drill separately were applied to simulate an external cavity preparation for implant on the epoxy patterns. Lastly, the angle and deviation value between plant holes and templates after applying three methods were measured. Results The deviation value existed in all the methods, among which the traditional method of preparing cavity by using twist drill step by step showed the most significant one (7.06°±0.37°), followed the method of preparing cavity by using multistep drill (4.84°±0.75°) and then the Br?nemark method of cavity preparation (2.68°±0.77°). Conclusion Directed by simple template of dental implant centered on repair, Br?nemark method demonstrates the highest precision, so it is the most suitable method of performing the operation with template.

Key words: dental implant, implant template, Model experiments, Accuracy comparison