Introduction: The need for removable prosthetic replacements is increasing as the world's population ages. Patients with partially edentulous status often decides for partial dentures with a metal base as a prosthetic replacement, as this is more affordable for them. Purpose: The purpose of the thesis is to present the design of a metal base for partial dentures based on a review of professional and scientific literature. The process of planning and manufacturing a metal base according to the classical method is described and expertly demonstrated, as well as the final manufacturing of a partial prosthesis. Methods: In the diploma thesis, we have carried out a review of domestic and foreign literature in Slovene and English on the topic of metal base design in partial dentures. The main source of information was scientific literature, such as technical books and journals, and technical articles. Literature was found using libraries and expert databases. In the practical part, under the supervision of a tutor, we designed a metal base in the laboratory, based on the procedures already described in the scientific articles and presented the process of fabricating a partial denture using the classical method. Results: We made a lower and an upper partial denture. We used two methods of fabrication, the upper metal base was fabricated using the classical method of metal casting and the lower base was classically designed in a parallelometer, then modelled on a computer and 3D printed. The upper metal base was successfully duplicated in metal and fitted well to the original plaster model. The lower metal base was also well modelled and fitted to the original plaster model. The metal bases were classically finished and polished in the dental laboratory and then we proceeded to finish the partial denture. We placed the missing teeth on the plastered models in the articulator and pressed in the acrylate. After polymerisation, the acrylate was treated with abrasives and polished on a polishing machine. The final product was a good fit on the original model. We found that the design of the metal base was in line with recommended practice. Discussion and conclusion: Patients with partially edentulous status still prefer a partial denture with a cast metal base as a prosthetic replacement, as it is more affordable. The immediate goals of prosthodontic treatment in partially edentulous patients using removable partial dentures are to improve appearance and restore function, and to protect the remaining tissue. When planning the metal base, the plan drawn up by the dentist must be followed. The metal base in the dental laboratory is designed using a parallelometer. All factors must be taken into account in the design, and it is important to consider the forces that will act on the tissues and anchor teeth. The choice of appropriate clasps and the design of the large abutment are also important. The fabrication of a partial denture with a cast metal base is still a widespread and also successful method to address the partial edentulousness of the patient. In recent years, the classical design of the metal base has not changed much.
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