Vol. 10, Issue 3, Part E (2024)

Digital technology and intraoral scanners have gained popularity in dental practice due to its advantages over conventional impression techniques, which includes reduced laboratory and chair time and implementation of a completely digital production workflow .the purpose of this article is to evaluate accuracy of intra oral and extra oral arch complete scan of partially edentulous maxillae. A standard maxillary typho model is modifed and scanned with medit T310 extra oral scanner and 3d printed. A digital vernier caliper was used to measure the distance between center of the ditch in incisal surface of right canine and incisal offset tip in left canine on the 3d printed reference model. One extra oral scanner (Rainbow Scanner structured light (Dentium Dental Laboratory 3D Scanner Rainbow) {group A} and Two intra oral scanners (structured light-3d-in-motion video technology MEDIT i 500 {Group-B}, structured light-optical triangulation and confocal microscopy UPCERA) {Group C} and were used to obtain the testing results. Each of these 3 scanners performed 10 scans of the reference model. Mean comparison and P values are 0.174mm & 0.006, 0.161mm & 0.026 and 0.223 & 0.023 mm respectively. This shows that Group A (rainbow) scanner has highest precision among the three types of scanners. The group B (medit i500) scanner has highest trueness among the three types of scanners. The difference of all the three scanners with reference data is significant but among themselves its insignificant.