The term "digital twin" refers to data that is recreated in a virtual setting to mimic reality 4, 5. Recently, dentistry has seen an increase in the use of three-dimensional (3D) digital imaging to develop virtual treatment plans 1, 2, 3. Accuracy can be improved by scanning the alginate impression within five minutes or by intraoral scanning of the entire arch with segmentation. Alginate impression scans and IOS are suitable supplements to CBCT compared to the plaster model. Scans of alginate impressions after two hours showed the greatest discrepancies, but these were all less than the CBCT voxel size of 0.39 mm. The differences and distances at each reference point were measured. The digital twins obtained from the alginate impression and IOS were superimposed with those obtained from the plaster cast. Using an IOS, the full arch was scanned in segments using CS 3600 and simultaneously with i700 wireless. The desktop model scanner was used to scan the alginate impression twice, five minutes and two hours after impression-making. Plaster models, alginate impressions, intraoral scan (IOS) images, and CBCT images of 20 patients were obtained. This study aimed to assess the feasibility of different digital dentition models over that of plaster casts. The use of a plaster model is common however, it has certain drawbacks. Distortion of dentition may occur in cone-beam computed tomography (CBCT) scans due to artifacts, and further imaging is frequently required to produce digital twins.
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