Received 01/07/2021
DOI: 10.35556/idr-2021-3(96)27-31

Myofunctional parameters in patients using full removable dentures with progenic and prognathic ratio of the anterior segments of the edentulous jaws
Aksenov D.I., ORCID: 0000-0003-1503-4978, Mayboroda Yu.N., Bragin E.A., Aksenov I.N.
Federal State Budgetary Educational Institution of Higher Education “Stavropol State Medical University” of the Ministry of Healthcare of the Russian Federation.
355017, Russia, Stavropol, 310 Mira str.

Summary
The aim study was to construct artificial dentitions based on the method of mathematical modeling with the progenic and prognatic ratios of toothless frontal segments and to analyze the functional activity of the masticatory muscles in patients using dentures made in this way, compared with standard prosthetic structures.
To compare and interpret the data obtained, electromyographic studies were performed in the control group (16 people), whose teeth were made using the traditional method, and the main group (22 people), whose artificial teeth were formed according to individual mathematical calculations, taking into account the size of the sagittal gap of the frontal segments of the progenic and prognatic ratio of toothless jaws.
Statistical processing of the results of the electro-myographic study was carried out using the Statistica application software package. The digital data were processed by the method of variational statistics using the Student’s t-test.
The analysis of the obtained data showed the advantages of using individual mathematical calculations when solving the issue of tactics for constructing dentitions in the frontal segment of toothless jaws, taking into account the degree of the sagittal gap in the progenic and prognatic correlation of the jaws and their possible combinations.

Keywords: complete loss of teeth, progeny, prognathia, electromyography, chewing muscles.

For citation: Aksenov D.I., Mayboroda Yu.N., Bragin E.A., Aksenov I.N. Myofunctional parameters in patients using full removable dentures with progenic and prognathic ratio of the anterior segments of the edentulous jaws. Stomatology for All / Int. Dental Review. 2021, no.3(96): 27-31 (In Russian). doi: 10.35556/idr-2021-3(96)27-31

References
1. Khvatova V.A. Clinical gnatology. Moscow: Meditsina, 2005, 294 p. (In Russian).
2. Dobrovol’skiy O.V. Electromyographic assessment of neuromolecular coordination of masticatory muscles in patients with complete absence of teeth, depending on the method of prosthetics. Bulletin of Biology of problems of Medicine. 2013, 2(100): 297—300 (In Ukrainian).
3. Naumovich S.A., Piskur V.V., Khodylev V.I. Electromyographic studies of the temporal and masticatory muscles during repeated prosthetics of patients with complete tooth loss. Military medicine. 2013, no.2(27): 46—100 (In Russian).
4. Asylbaev G.T., Makarova F.F. Individual approach for repeated prosthetics of elderly patients with complete absence of teeth. Medical science and education of Ural. 2015, no.1: 63—67 (In Russian).
5. Danilova M.A., Ishmurzin P.V., Zakharov S.V. Application of geometric models of the upper and lower jaws, the temporomandibular joint to describe changes in the maxillary jaw complex in normal and distal occlusion. Ortodontics. 2012, no.1(57): 15—19 (In Russian).
6. Nespryad’ko V.P., Zhegulovich Z.E. Questions of reproduction of occlusion in dentures. Modern dentistry. 2007, no.7: 42—51 (In Russian).
7. Redinov I.S., Metelitsa S.I., Strakh O.O. Improving the effectiveness of repeated treatment of patients with complete absence of teeth on the lower jaw. Fundamental’nye issledovaniya. 2014, no.10: 356—359 (In Russian).
8. Chervyakov N.I., Bragin E.A., Mayboroda Yu.N., Lola D.V., Nazarov A.S. Program for the implementation of the algorithm for constructing dental rows in complete removable dentures. Certificate of registration of the computer program no. 2016616978 dated 22.06.2016 (in Russian).
9. Lola D.V., Nazarov A.S. Mathematical modeling of dental rows in complete removable dentures. Bulletin SKFU. 2015, no.47(2): 48—55 (In Russian).
10. Aksenov D.I., Mayboroda Yu.N. Anthropometric measuring device. Patent for invention no. 2743801 of 29.07.2020 (In Russian).
11. Gerasimova L.P., Yakupov B.R. Diagnostics of musculoskeletal dysfunction of the temporomandibular joint associated with occlusive disorders. Ortodontics. 2012, no.2: 34—37 (In Russian).
12. Ishmurzin P.V., Danilova M.A., Khudoroshkin Yu.G. Prediction of changes in the tone of the chewing muscles in the anomalous occlusion of the dentition. Ortodontics. 2017, no.4(80): 22—26 (In Russian).
13. Kasatkina L.F., Gil’vanova O.V. Electrographic research methoods in the diagnosis of neuromuscular. Needle electromyography. Moscow: Medika, 2012, 120 p. (In Russian).
14. Luk’yanov M.V. Clinical electromyography. History and prospect. Neurological jornal. 2013, no.2: 59—64 (In Russian).
15. Luk’yanov M.V. Diagnostic and terminological difficulties in clinical electromyography. Modern medical technologies. 2010, no.5: 52—55. (in Russian)
16. Nabiev N.V., Klimova T.V., Persin L.S., Pankratova N.V. Electromyographya — modern method for diagnosing the functional state of the muscles of the maxillofacial region. Ortodontics. 2009, no.2(46): 13—19. (In Russian).
17. Peregudov A.B., Melenkina O.A. Surface electromyography as the basis of modern diagnostics of diseases of the occlusive-musculoskeletal-articular complex. Ortodontics. 2012, no.2(58): 19—26 (In Russian).
18. Ferrazio V.F., Tartaglia G.M., Calletta A., Grassi G.P., Sforza C. The influence of occlusion on jaw and neck muscle activity: a surface EMG study in healthy young adults. Journal of Oral Rehabilitation. 2006, no.33(5): 341—348. doi: 10.1111/j.1365-2842.2005.01558.x.
19. Suvinen T.I., Kemppainen P. Review of clinical EMG studies related to muscle and occlusal factors in healhy and TMD subjects. Journal of Oral Rehabilitation. 2007, no.34(9): 631—644. doi: 10.1111/j.1365-2842.2007.01769.x.