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https://doi.org/10.14300/mnnc.2022.17094

The influence of the spatial position of the lower jaw determining on the efficiency of the apparatus treatment in patients with dysfunctions of the temporomandian joint

[Original research] [Stomatology]
Alexandr Dolgalev; Evgeny Bragin; Karen Karakov;

The purpose of this study was to determine the effectiveness of the methods for determining the size of the separation of dentition when planning the design of functional devices. Optimization of conditions for the reposition of the articular disc and elimination of its deformation, by vertical separation of the articular surfaces, centering of the lower jaw relative to the skull in the transversal and sagittal plane was carried out by modeling the reconstructive position of the lower jaw, in which planning and manufacturing of functional devices were carried out. The effectiveness of various methods for determining the spatial position of the lower jaw was evaluated: analysis of nuclear magnetic resonance imaging of the temporomandibular joint, determination of the central ratio of the jaws by the anatomical and functional method, determination of the vertical Shimbachi index. Each method has a good potential when using a personalized approach to the hardware treatment of patients with dysfunctions of the temporomandibular joint.

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Keywords: temporomandibular joint dysfunction, nuclear magnetic resonance imaging (MRI), articular mouthguards, occlusal splints, orthotic