Accuracy of implant placement using three different surgical guides

Abstract

Aim of the study: This study was done to evaluate and compare the accuracy of implantplacement using three differently constructed surgical guides (3D printed, laser sintered and CAD/CAM milled surgical guides).Materials and Methods: Eighteen implants were placed in partially edentulous patients havingmaxillary bounded edentulous areas. Based on the method of construction, patients were dividedinto three groups: group I, received 3D printed surgical guides, group II: received laser sinteredsurgical guides and group III: received CAD/CAM milled surgical guides. Implant placementevaluation included the difference between the planned and the actual implant sites regardingthe point of implant insertion (coronal deviation), apex position (apical deviation), and implantangulation (angular deviation)Results: The highest deviation values were obtained from group III (CAD/CAM milled surgicalguides) followed by group II (laser sintered surgical guides), while group I (3D printed surgicalguides) showed the least deviation values. There was a statistically significant difference betweengroup I (3D printed surgical guides)) and group III (CAD/CAM milled surgical guides) regardingcoronal deviation and apical deviation, also there was a statistically significant difference betweengroup II (laser sintered surgical guides) and group III (CAD/CAM milled surgical guides) regardingcoronal deviation and apical deviation, while there was no statistically significant difference betweengroup I (3D printed surgical guides) and group II (laser sintered surgical guides), besides there wasno statistically significant difference between the three groups regarding angular deviation.Conclusion: 3D printed surgical guides had the best accuracy (minimal deviation) followedby laser sintered surgical guides and the least accurate were the CAD/CAM milled surgical guide