Structural features of the temporomandibular joint in patients with gnathic mesial occlusion

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Abstract

The aim of the study was to evaluate the structural features of the temporomandibular joint in patients with a gnatic form of mesial occlusion of the dentition. Materials and methods. In studying the structural features of the facial skull in patients with gnatic mesial occlusion, the height of the condylar process was separately evaluated in the course of the study in order to avoid the incorrect measurement of the branch height in cases of degenerative changes in the condylar process. Results. The structural features of the temporomandibular joint were determined in 50 adult patients (aged 18–44 years old) using cone-beam computed tomography.
Сonclusion. Patients with gnathic mesial occlusion of the asymmetric group showed identical articular spaces (anterior and posterior) in the sagittal direction on both the deviating and non-deviating sides, suggesting that the bilateral relationship between the head and fossa may be as symmetrical as in patients with symmetry. However, the axial condylar angle had a bilateral difference only among patients in the asymmetric group; namely, it was significantly greater on the side of the deviating condyle.

About the authors

A. B. Mallaeva

A.I. Evdokimov Moscow State University of Medicine and Dentistry of the Ministry of Health of Russia

Author for correspondence.
Email: dr.mallaeva@gmail.com
Russian Federation, 20/1, Delegatskaya street, Moscow, 127473

N. S. Drobysheva

A.I. Evdokimov Moscow State University of Medicine and Dentistry of the Ministry of Health of Russia

Email: dr.mallaeva@gmail.com
Russian Federation, 20/1, Delegatskaya street, Moscow, 127473

References

  1. Drobyshev AYu, Anastasov G. Fundamentals of orthognathic surgery. Moscow: «Printing town»; 2007. (in Russian)
  2. Persin LS. Orthodontics. Diagnostics and treatment of dento-maxillofacial anomalies and deformities. Moscow: GEOTAR-Media; 2016. (in Russian)
  3. Ludlow JB, Ivanovic M. Comparative dosimetry of dental CBCT devices and 64-slice CT for oral and maxillofacial radiology. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2008;106(1):106–114. doi: 10.1016/j.tripleo.2008.03.018.
  4. Drobysheva NS, Mallaeva AB, Kaminsky-Dvorzhetsky NA, et al. Features of the structure of the maxillofacial region in patients with gnatic form of mesial occlusion of the dentition. Ural'skii meditsinskii zhurnal. 2010;(8):52–55. (in Russian)
  5. Drobysheva NS, Lezhnev DA, Petrovskaya VV, et al. The use of cone-beam computed tomography in orthodontics. Ortodontiya. 2019;(1):32–39. (in Russian)
  6. Drobyshev AYu, Sviridov EG, Dibirov TM, et al. Diagnostics and combined treatment of patients with asymmetric jaw anomalies. Ural'skii meditsinskii zhurnal. 2016;(8):8–9. (in Russian)

Supplementary files

Supplementary Files
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2. Fig. 1. Scheme of the pathogenesis of degenerative diseases of the temporomandibular joint (according to Hatcher).

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3. Fig. 2. Measurement of the length of the branch of the lower jaw and height condylar process (Go-Cd and In-Co) tangentially to the posterior edge of the lower jaw branch.

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4. Fig. 3. Sagittal parameters of the temporomandibular joint.

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5. Fig. 4. The upper position of the condyle in patients with gnatic the shape of mesial occlusion and asymmetry of the lower jaw.

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6. Fig. 5. Axial angle of the condyle.

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7. Fig. 6. Increase in the axial angle on the deviating side.

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