Abstract: ［Abstract］ Objective〖HTSS〗〓To compare the differences of surgical precision between the auxiliary method of 3d printing implant template and the conventional method in immediate implantation of anterior teeth.
〖HTH〗〖WTHZ〗Methods〖HTSS〗〓Forty patients of immediate implantation in anterior teeth were selected and divided into two groups: template auxiliary and nontemplate auxiliary, with respectively 20 cases of the each group. Patients in the group of template auxiliary were taken CT scan before operation. Twenty dentistimplants of bone level with the auxiliary of 3D printing implant template are implanted and CT scan were followed once again after the operation. As for patients in the group of nontemplate auxiliary, the cone beam CT(CBCT) would be taken before operation and 20 dentist implants of bone level were planted after determining the prepared directions and angles of the cavity by doctors′ visual measurement, with CBCT following then. The implant positions of preoperative simulation and postoperative reality in both groups need to be matched. While the differences between the actual and expected positions and angles of the implants in both groups were measured respectively by the application of Mimic.
〖HTH〗〖WTHZ〗Results〖HTSS〗〓The deviation distances of neck mesialdistal, buccolingual and vertical directions in the group of template auxiliary were smaller than those in the group of nontemplate auxiliary, which had the statistical significance. The deviation angles of the mesialdistal, the deviation distances of neck buccolingual and vertical directions in the group of template auxiliary were smaller than those in the group of nontemplate auxiliary,which had the statistical significance.
〖HTH〗〖WTHZ〗Conclusion〖HTSS〗〓3D printing implant template could reduce the deviations from the positions and angles of implantation so as to improve its position precision.

Key words: dental implant, 3D printing technology, implant template