DOI:

10.37988/1811-153X_2025_2_126

Rationale for the effectiveness of total orthopedic rehabilitation on dental implants in patients with tooth loss and asymmetry of masticatory muscle tension

Downloads

Authors

  • N.L. Lezhava 1, PhD in Medical Sciences, associate professor of the Oral and maxillofacial surgery Department
    ORCID: 0000-0003-0624-843X
  • N.Yu. Taranova 2, assistant at the Dentistry Department at the Faculty of Advanced training and professional retraining
    ORCID: 0009-0006-7313-3543
  • V.G. Nizhnik 2, assistant at the Dentistry Department at the Faculty of Advanced training and professional retraining
    ORCID: 0009-0003-3032-425X
  • O.N. Risovannaya 2, Doctor of Science in Medicine, associate professor of the of Dentistry Department at the Faculty of Advanced training and professional retraining
    ORCID: 0000-0003-0779-1055
  • S.A. Triandafilov 3, dental surgeon, prosthodontist
    ORCID: 0000-0002-4236-5062
  • A.M. Gusarov 4, PhD in Medical Sciences, associate professor of the Maxillofacial surgery Department
    ORCID: 0000-0002-6583-4685
  • L.L. Borozdkin 4, PhD in Medical Sciences, associate professor of the Maxillofacial surgery Department
    ORCID: 0000-0002-6403-2621
  • N.M. Belova 5, PhD in Medical Sciences, associate professor of the General and surgical dentistry Department
    ORCID: 0000-0002-6164-4577
  • N.R. Saperova 5, PhD in Medical Sciences, associate professor of the General and surgical dentistry Department
    ORCID: 0000-0002-6862-216X
  • L.M. Shevchenko 6, PhD in Medical Sciences, dentist
    ORCID: 0009-0004-0214-5470
  • 1 RUDN University, 117198, Moscow, Russia
  • 2 Kuban State Medical University, 350063, Krasnodar, Russia
  • 3 Private dental clinic “Constanta”, 350042, Krasnodar, Russia
  • 4 Sechenov University, 119048, Moscow, Russia
  • 5 Russian Medical Academy of Continuous Professional Education, 125993, Moscow, Russia
  • 6 Private dental clinic “Center for Modern Dentistry”, 119526, Moscow, Russia

Abstract

The symmetry of masticatory muscle tension in tooth loss undergoes various changes due to the reorganization of the chewing process itself. Electromyography (EMG) of the masticatory muscle’s measures muscle tone over time, for example, during the chewing cycle or during clenching. Thus, EMG can provide an assessment of muscle tone during the chewing sequence. Since bite force and chewing efficiency are important parameters, the use of EMG in patients with tooth loss can be an effective tool for diagnosing various pathological processes. Purpose: to identify a correlation between the restoration of chewing function in patients with tooth loss and the symmetry of masticatory and temporal muscle tension.
Materials and methods.
20 patients with tooth loss (K08.1) underwent dental implant placement in the upper and lower jaws followed by prosthetic rehabilitation. Before surgery and one month after permanent prosthetic rehabilitation, electromyography (EMG) was used to measure the activity of the masseter and temporal muscles (total amplitude during teeth clenching) and calculate the symmetry index of muscle tension on the right and left sides.
Results.
Preoperative measurements showed average muscle tension levels of 27.00±9.78 mV in the right temporal muscle and 28.15±9.60 mV in the left temporal muscle. For masseter muscles, the total clenching amplitude was 24.30±5.56 mV on the left side and 20.60±8.88 mV on the right. After one month of prosthetic rehabilitation, significant correlations emerged between masticatory function recovery and muscle activity patterns: analysis revealed an inverse ipsilateral relationship between masseter and temporal muscles (r=−0.87 right, r=−0.74 left, p<0.001), bilateral synchronization of masseter muscles (r=0.72, p<0.001), and cross-muscle regulatory patterns (Md/Ts: r=−0.45, p=0.046; Ms/Td: r=−0.63, p=0.003) demonstrating asymmetric masticatory control mechanisms, while demonstrating improved symmetry following prosthetic rehabilitation.
Conclusion.
Overall, this work shows that the activity of the masticatory muscles in patients with tooth loss improves after orthopedic rehabilitation on dental implants. This improvement is manifested in a more symmetrical tone of the masticatory muscles.

Key words:

dental implantation, masticatory muscle tone, EMG, total orthopedic rehabilitation, adentia

For Citation

[1]
Lezhava N.L., Taranova N.Yu., Nizhnik V.G., Risovannaya O.N., Triandafilov S.A., Gusarov A.M., Borozdkin L.L., Belova N.M., Saperova N.R., Shevchenko L.M. Rationale for the effectiveness of total orthopedic rehabilitation on dental implants in patients with tooth loss and asymmetry of masticatory muscle tension. Clinical Dentistry (Russia).  2025; 28 (2): 126—132. DOI: 10.37988/1811-153X_2025_2_126

References

  1. Mamedov S.K., Guseynov N.A., Ivashkevich S.G., Mukhametshin R.F., Lezhava N.L., Lukianova E.A., Haddad T., Trufanov V.D. Experimental justification of the use of surgical templates. Clinical Dentistry (Russia). 2023; 2: 144—149 (In Russian). eLIBRARY ID: 54167538
  2. Feine J.S., Lund J.P. Measuring chewing ability in randomized controlled trials with edentulous populations wearing implant prostheses. J Oral Rehabil. 2006; 33 (4): 301—8. PMID: 16629885
  3. Hugger A., Hugger S., Schindler H.J. Surface electromyography of the masticatory muscles for application in dental practice. Current evidence and future developments. Int J Comput Dent. 2008; 11 (2): 81—106. PMID: 19119545
  4. Nishi S.E., Rahman N.A., Basri R., Alam M.K., Noor N.F.M., Zainal S.A., Husein A. Surface electromyography (sEMG) activity of masticatory muscle (masseter and temporalis) with three different types of orthodontic bracket. Biomed Res Int. 2021; 2021: 6642254. PMID: 33969121
  5. Alshammari A., Almotairy N., Kumar A., Grigoriadis A. Effect of malocclusion on jaw motor function and chewing in children: a systematic review. Clin Oral Investig. 2022; 26 (3): 2335—2351. PMID: 34985577
  6. Piancino M.G., Falla D., Merlo A., Vallelonga T., de Biase C., Dalessandri D., Debernardi C. Effects of therapy on masseter activity and chewing kinematics in patients with unilateral posterior crossbite. Arch Oral Biol. 2016; 67: 61—7. PMID: 27031304
  7. Neves B.R., Costa R.T.F., Vasconcelos B.C.D.E., Pellizzer E.P., Moraes S.L.D. Muscle activity between dentate and edentulous patients rehabilitated with dental prostheses: A systematic review. J Oral Rehabil. 2023; 50 (12): 1508—1517. PMID: 37605296
  8. Fontijn-Tekamp F.A., Slagter A.P., van›t Hof M.A., Geertman M.E., Kalk W. Bite forces with mandibular implant-retained overdentures. J Dent Res. 1998; 77 (10): 1832—9. PMID: 9786640
  9. van Kampen F., Cune M., van der Bilt A., Bosman F. The effect of maximum bite force on marginal bone loss in mandibular overdenture treatment: an in vivo study. Clin Oral Implants Res. 2005; 16 (5): 587—93. PMID: 16164466
  10. Uçankale M., Akoğlu B., Ozkan Y., Ozkan Y.K. The effect of different attachment systems with implant-retained overdentures on maximum bite force and EMG. Gerodontology. 2012; 29 (1): 24—9. PMID: 20604812
  11. Pruim G.J., Ten Bosch J.J., de Jongh H.J. Jaw muscle EMG-activity and static loading of the mandible. J Biomech. 1978; 11 (8—9): 389—95. PMID: 711787
  12. Bakke M., Holm B., Gotfredsen K. Masticatory function and patient satisfaction with implant-supported mandibular overdentures: a prospective 5-year study. Int J Prosthodont. 2002; 15 (6): 575—81. PMID: 12475165
  13. Ramsundar K., Rengalakshmi S., Venugopalan S., Jain R.K., Nagesh S. Electromyographic assessment of the masseter and temporalis muscles in skeletal ii malocclusion subjects with varying overjets: A pilot study. Cureus. 2023; 15 (9): e44645. PMID: 37799218
  14. Gartner J.L., Mushimoto K., Weber H.P., Nishimura I. Effect of osseointegrated implants on the coordination of masticatory muscles: a pilot study. J Prosthet Dent. 2000; 84 (2): 185—93. PMID: 10946336
  15. Shim J., Ho K.C.J., Shim B.C., Metaxas A., Somogyi-Ganss E., Di Sipio R., Cioffi I. Impact of post-orthodontic dental occlusion on masticatory performance and chewing efficiency. Eur J Orthod. 2020; 42 (6): 587—595. PMID: 31768524

Downloads

Received

May 8, 2024

Accepted

April 13, 2025

Published on

July 5, 2025