Background. Nowadays for a more precise implant rehabilitation, computed tomography images, including cone-beam computed tomography (CBCT) were introduced. This technology improved the outcome of implant-based treatment and made it possible to better visualize the underlying bone structures than the standard two-dimensional (2D) radiography, so association between CBCT and CAD-CAM makes it possible to achieve several advantages. aim of this literature review is to assess clinical studies regarding accuracy of 2 digital surgeries methods (tooth supported and mucosupported guides) versus conventional systems. Methods. The present study summarizes information through the articles from 2006 to 2018 available through PubMed and Scopus databases with “ digital implant placement” and “ Accuracy” and “ ComputerAssisted Surgery” as key words. Results. This study has assessed 8 articles which are closely related to our keywords among 20 articles which totally were found. They describe the use of bone and mucosupported guides, demonstrating angular deviations cervically from 0. 50 mm to 4. 22mm and apically ranging from 0. 18mm to 3. 22. For the mandible, a significantly lower 3D error was observed at implant apex and also in angular deviation when comparing to the 3D error of the implants inserted in the maxilla. Conclusions. clinical significance: Computer-guided implant placement can be accurate, but significant deviations have to be taken into account. Randomized studies are needed to analyses the impact of individual parameters in order to allow optimization of this technique. Moreover, the practitioner should have a clear overview on indications and benefits to find the right candidates as patient but we can say that Computer-guided template-based implant placement showed high implant survival rates ranging from 91 to 100%. However, a considerable number of technique-related perioperative complications were observed.