Abstract: PURPOSE :To assess the accuracy of implant placement using digitized guide templates, with emphasis on the advantage and clinical value in oral implantology. METHODS : From February 2013 to December 2013, Sixty patients diagnosed with dentition defect were randomly selected in the Department of Oral Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, who were equally divided into 2 groups. Pre-operative cone-beam computed tomography (CBCT) was taken, and operation plan was designed with Simplant software. Implants were placed in group I without being assisted by surgical guide templates; implants were placed in group Ⅱ assisted by digitized guide templates using rapid prototyping technology. Postoperative CBCT was taken in 2 groups. Pre- and post-operative CBCT was matched and integrated using Simplant software, the deviation of implant between actual position and preoperative design was measured and compared using SPSS 18.0 software package. RESULTS : Totally 52 implants was placed in groupⅠ, the recorded deviation was as follows: the implant shoulder (2.07±0.51) mm (1.33-2.79 mm), apex (2.89±1.02) mm (1.51～4.43 mm), depth(0.78±0.33) mm (0.30～1.28 mm) and angle(8.84±4.64)° (3.29-16.21°); totally 57 implants were placed in group Ⅱ, measured deviation was as follows: the implant shoulder (1.18±0.72) mm (0.12 -2.35 mm)，apex (1.43±0.74) mm (0.20-2.66 mm), depth (0.54±0.29) mm（0.20-1.07 mm） and angle (4.21±1.91)° (0.82-7.79°). There was significant difference in implant shoulder, apex and angle （P<0.01）between the 2 groups, while there was no significant difference of depth bias between the 2 groups (P>0.05). CONCLUSIONS : Accuracy of implant placed was better controlled using digitized guide templates, which was favorable application prospect.

Key words: Dental implantation, Computer aided design, Surgical guide templates, Accuracy