The aim of this study is to evaluate the accuracy of implant placement using implant 
surgical guide by CBCT cast scan. Patients and methods: seven resin surgical guide models were 
used in this study. Implant position was virtually planned using 3D planning software. Surgical guides 
were designed on the software and exported in STL format. Ten implants were placed. The 3D 
position of the planned and placed implants, in terms of the linear deviations of the implant head and 
apex and the angular deviations of the implant axis, was compared by superimposing the pre- and 
postoperative CBCT using software. Data showed parametric distribution so; it was represented by 
mean and standard deviation (SD) values. Result: Angular deviation was 2.38 ± 0.37 degree. Coronal 
deviation of Implant was 0.49 ± 0.12 mm. Apical deviation of implant Apex was 1.28 ± 0.15 mm, 
although the implant position was slightly different than the planning but, there was no statistically 
significant difference. Conclusion Implant surgical guide fabricated with CBCT cast scan has 
accepted accuracy and it is less costly technique with accepted accuracy.