The purpose of this paper it to authenticate the sequence of three-dimensional (3D) printing works, specifically the 3D modeling process, in the consideration of implant planning. In implant planning, the accuracy of dimension and degree of the 3D printed model are critical, since it takes effect on the success of implant installation. A computerized tomography (CT) pelvis area has been segmented to obtain the region of interest, iliac organ, with several procedures. The outcome from segmentation is converted from the format of digital imaging and communications in medicine (DICOM) version to the ready to print format of stereolithography (STL). The DICOM data and the STL data were then captured in the same dimension and position. The key process of this research was conducting an algorithm of template matching to verify quantitatively that the original CT data of iliac organ is accurately identic with its 3D models. This paper establishes a cutting-edge analysis that answer the percentage of similarity between the original data with the 3D model of 94,46%.