DOI:

10.37988/1811-153X_2022_3_54

Recovery assessment of eccentric occlusal lower jaw movements in patients with TMJ disc disorders at the stage of splint therapy

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Authors

  • L.V. Dubova 1, PhD in Medical Sciences, full professor of the Prosthodontics Department
  • L.V. Korkin 1, postgraduate at the Prosthodontics Department
    ORCID ID: 0000-0002-7154-2865
  • G.V. Maximov 1, PhD in Medical Sciences, associate professor of the Prosthodontics Department
  • M.S. Sokolova 1, PhD in Medical Sciences, associate professor of the Prosthodontics Department
  • 1 Moscow State University of Medicine and Dentistry, 127473, Moscow, Russia

Abstract

Improving the effectiveness of the treatment of musculo-articular disfunction of the temporomandibular joint (TMJ) with the implementation of advanced digital technologies is an actual topic due to the increasing incidence of this pathology in modern dental practice. The aim of the study is to study the trajectory and eccentric movements volume of the lower jaw in patients with disc disorders of TMJ. . We conducted a kinesiographic study of eccentric occlusal movements of the lower jaw in 20 patients aged 27 to 58 years with TMJ disc disorders before treatment and after 6 months of wearing an occlusal-stabilizing device. We measured the angle trajectory of laterotrusive and protrusive eccentric movements being relative to the horizon and the volume of these movements of the lower jaw. Occlusion-stabilizing apparatus was modeled and then milled according to the data of intraoral scanning of the jaws and the therapeutic position of the lower jaw found using transcutaneous electrical nerve stimulation. . Before treatment the average angle of the left laterotrusion movement and the volume were 43.7±12.57° and 4.4±1.9 mm, the average angle of the right laterotrusion movement and the volume were 38.6±13.02° and 4.3±2.06 mm, the mean protrusion angle and volume were 36.7±10.44° and 4.4±1.7 mm. After six months of splint therapy the average angle of the left laterotrusive movement and volume were 43.3±3.57° and 7.3±0.37 mm, the mean angle of the right laterotrusive movement and volume were 42.1±3.86° and 7.2±0.56 mm, the mean angle of the protrusion movement and volume were 44.3±4.16° and 7.1±0.8 mm. . Using an occlusion-stabilizing device at the stage of splint therapy in patients with TMJ disc disorders such indicators as an increase in the volume and a decrease in the spread from minimum to maximum values of the angular indicators of laterotrusive and protrusive movements improved after 6 months. The average values of the angular indicators and the volume of laterotrusive and protrusive movements approached those of patients without TMJ pathology and the intact dentition that indicates the effectiveness of the using an occlusal-stabilizing apparatus.

Key words:

kinesiography, temporomandibular joint, eccentric movements of the lower jaw, splint therapy, virtual articulator

For Citation

[1]
Dubova L.V., Korkin L.V., Maximov G.V., Sokolova M.S. Recovery assessment of eccentric occlusal lower jaw movements in patients with TMJ disc disorders at the stage of splint therapy. Clinical Dentistry (Russia).  2022; 25 (3): 54—59. DOI: 10.37988/1811-153X_2022_3_54

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Received

July 5, 2022

Accepted

July 16, 2022

Published on

October 30, 2022