DIGITAL SCANNING VS. DESKTOP SCANNING EFFECT ON ACCURACY OF GUIDED IMPLANT SURGERY IN PARTIALLY EDENTULOUS PATIENTS (Randomized Clinical Trial)

Abstract

Objective: To compare accuracy of surgical guided implant produced by intraoral scanner and desktop scanner in partially edentulous patients. Material and methods:Ten individuals with partial dentures were chosen for implant insertion. Eight bilateral instances and two unliteral cases totaling 42 implants were implanted in 4 men and 6 females, with a mean age of 47 years (42-55 years) included. Patients were split into two equal groups at random (n = 21 each): group one Surgical guide manufactured using intra oral digital impression. while group two Surgical guide manufactured using model cast scanning by desktop scanner. a pre cone beam CT scan was done and post CBCT was done after implant placement with the same parameters of pre CBCT. Superimposition of CBCT scans was made. The linear and angular deviations of placed implants were measured. Results:The mean 3D angle, platform, apical, and vertical deviations in the intraoral scan group were 2.5°, 0.7 mm, 1.1 mm, and 0.6 mm, respectively. While the average 3D angular, platform, apical, and vertical deviations for the desktop scanner group were, respectively, 2.6°, 0.1mm, 1.1mm, and 1.1mm. Conclusion:both scanning protocols have comparable effect on apical , coronal , vertical and angular deviations of placed implants, although intraoral scanner shows less vertical deviation.