Introduction: Orthodontics and maxillofacial orthopedics are major branches of dentistry that include the treatment of dental abnormalities, abnormalities between dental arches, and abnormalities of facial structures. In orthodontic therapy, depending on the type of abnormality, removable or non-removable orthodontic appliances can be used. Non-removable orthodontic appliances are used for major orthodontic irregularities. They consist of brackets, a wire arch and other active elements. For good results of orthodontic therapy, the exact placement of the brackets is extremely important. Brackets can be placed by an orthodontist using the direct method, i.e. directly on the tooth, or the bracket can be placed on a plaster model or in a computer program. Then a transfer tray is made, with which the therapist can accurately transfer the position of the brackets to the teeth. Purpose: Comparison of the production of different types of transfer trays for indirect bonding of non-removable orthodontic appliances. Methods: Review of professional literature on the topic of transfer tray production and laboratory production of different types of transfer trays. Results: I made transfer trays using the method of placing a brackets on plaster model and three-dimensional digital printed model. To transfer the brackets from the plaster and three-dimensionally printed model, I used silicone mass, ethyl vinyl acetate film (flexible and stiff) and transparent vinyl polyxylose silicone. In computer program I designed two transfer trays, which I three-dimensionally printed from a flexible resin-based material. Discussion and conclusion: In the selected literature, it is repeatedly mentioned that indirect placement of brackets, be it on a plaster or digital model, is more accurate than direct placement of brackets. When placing the brackets, the plaster model method has several advantages, as it allows better control over the placement of the bracket. Placingbracketss on digital models requires better orientation in the virtual environment. Nevertheless, placing brackets on a digital model has its advantages, namely good guidance of the user through the program's procedures, reduces human errors (all the advantages of the distance of the brackets from individual tooth plates are visible, as well as tilts and twists) and, with sufficiently experienced users of the program, improves laboratory procedures and production time. With the making of trays, I found that the most suitable tray for a plaster model and a 3D printed model is a tray with a combination of foil and silicone material techniques. I did not find any major differences between the three-dimensionally printed trays. All presented techniques for making transfer trays have advantages and disadvantages, mainly depending on the knowledge and skills of the users, as well as the availability of laboratory equipment.
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