Introduction: Digital Smile Design (DSD) is a modern digital tool for planning esthetic and functional prosthetic rehabilitation. It enhances communication between the dentist, the dental technician, and the patient, while enabling the patient to actively participate in the treatment planning process. This makes the final outcome more predictable and better aligned with the treatment plan. Digital photography within the Smile Design software serves as the basis for two-dimensional analysis of the clinical case and enables visualization of the anticipated final appearance of the prosthetic rehabilitation. The 3Shape Dental System software allows the use of a virtual articulator, which can simulate various mandibular movements and analyze occlusal relationships. Purpose: The purpose of this thesis is to present the application of modern digital technologies in planning complex prosthetic rehabilitations, particularly in cases requiring changes to the vertical dimension of occlusion. A comparison is made between the conventional planning method and the computer-aided planning method for prosthetic rehabilitation. Methods: This thesis is based on a review of professional and scientific literature and on the presentation of laboratory procedures for the fabrication of temporary prosthetic restorations in a dental laboratory. Both conventional and digital methods for planning and fabricating prosthetic restorations are described. Results: A temporary prosthetic restoration made of polymethyl methacrylate (PMMA) was designed in the 3Shape Smile Design software using the RealView Engine tool. Templates for the fabrication of the temporary prosthetic restoration were also produced. Their fabrication involved both digital procedures and conventional laboratory wax-up techniques, as well as 3D-printed models. All laboratory and clinical stages of the fabrication of the temporary prosthetic restoration are presented and described. Discussion and conclusion: This thesis demonstrates the differences between conventional and computer-aided planning of temporary prosthetic restorations. It was found that computer-aided planning provides greater accuracy, improved predictability of treatment outcomes, and a more efficient workflow in the dental laboratory. Digital technologies represent a significant advancement in the planning of complex prosthetic rehabilitations, as they improve the quality of treatment planning, communication among members of the dental team, and the final treatment outcome.
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