Introduction: Clinical indications for aesthetic prosthetic rehabilitation of patients with all ceramic structures are getting more and more widely utilized, due to the improved properties of ceramic materials and modern technological manufacturing processes. All ceramic bridges can be designed in the lateral parts of the dental arches, where the bite force is highest. The design and manufacturing process of bridges are rapidly shifting to the use of computer technology. The most beautiful appearance with dental prosthetics is achieved by using dental porcelain and glass ceramics, whereas the highest strength of dental ceramics can be found in polycrystalline ceramics from the groups of zirconium and aluminum oxide ceramics. The most common indications for the use of all ceramic materials are comprised by prosthetic care of caries-affected dentin and endodontic treated teeth in the visible front area. However, we are also increasingly planning to produce all ceramic bridges in the side portions because of allergies to various dental alloys. The purpose of this study is to present the different manufacturing technologies of all ceramic bridges as a description of the production process and the justification for their usage of different ceramic materials. Methods: For this thesis, we used modern scientific literature and presented laboratory dental procedures. Results: In this thesis, each stage of work in a dental laboratory, where the all ceramic bridges are manufactured, have been accurately reflected. Each work phase is also shown with pictorial material. We described six different ways of producing all ceramic bridges: The design of a Zirconia ceramic body and bridge veneering with dental porcelain, the construction of a monolithic bridge of glass ceramic with lithium desilicated blast, making the bridge blast superstructure of lithium desilicated glass ceramic and bonding to zirconium ceramic body, pressing fluorapatite glass ceramic on a ceramic zirconium frame, creating a monolithic lithium desilicated pressed bridge with staining and making a monolithic bridge from zirconium oxide ceramic. Conclusions: Each all ceramic bridge is designed and manufactured so that it is able to resist stresses during biting during its clinical use and the appearance is as close to natural teeth. When planning bridge frameworks, crowns thickness and the diameters of the connections between layers and links, we take into account the mechanical properties of all ceramic materials and the options of using laboratory technologies
|