DOI:

10.37988/1811-153X_2022_1_81

Cone beam computed tomography assessment of orthodontic treatment results in patients with sagittal skeletal anomalies

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Authors

  • F.F. Losev 1, PhD in Medical Sciences, full professor, director
    ORCID ID: 0000-0002-9448-9614
  • N.V. Popova 1, 2, PhD in Medical Sciences, senior researcher; associate professor of the Dentistry Department
    ORCID ID: 0000-0002-3686-5263
  • O.I. Arsenina 1, 3, PhD in Medical Sciences, full professor of the Orthodontics Department; senior researcher
    ORCID ID: 0000-0002-0738-1227
  • P.I. Makhortova 1, 2, PhD in Medical Sciences, researcher; assistant at the Dentistry Department
    ORCID ID: 0000-0002-1321-568X
  • A.G. Nadtochiy 1, PhD in Medical Sciences, professor of the X-Ray diagnostics Department
    ORCID ID: 0000-0002-3268-0982
  • 1 Central Research Institute of Dental and Maxillofacial Surgery, 119021, Moscow, Russia
  • 2 Burnasyan Federal Medical Biophysical Center, 123098, Moscow, Russia
  • 3 Russian Medical Academy of Continuous Professional Education, 125993, Moscow, Russia

Abstract

Aim — evaluation of the effectiveness of orthodontic treatment of patients with skeletal mesial occlusion during the bite of permanent teeth based on the analysis of cone-beam computed tomography data.
Materials and methods.
A comprehensive examination and treatment of 80 patients with skeletal mesial occlusion was carried out. The patients were selected according to the severity of the skeletal form of mesial occlusion, the middle stage of the formation of the mid palatal suture: I — 30 patients with upper retro/micro and lower pro/macrognathia; II — 40 patients with upper retro/micrognathia; III — 10 patients with lower pro/macrognathia. Orthodontic treatment was carried out using palatal expanders with a tooth-borne and bone-borne fixation, a non-removable bracket system, orthodontic mini screws, extra-oral equipment (facial mask). All patients underwent X-ray examinations (cone-beam computed tomography) before and after active orthodontic treatment.
Results.
Computer modeling of the result of orthodontic treatment in combination with the analysis of computed tomograms proved to be an effective tool in the treatment of patients with sagittal anomalies of occlusion, allowed to determine the possibility and magnitude of tooth movement, justify the choice of a treatment plan, as well as visualize the selected plan for the patient, which in turn increased the degree of satisfaction with the result of the treatment. The algorithm of treatment of patients with mesial occlusion included, in addition to skeletal expansion of the upper jaw, the combined use of orthodontic mini screws for skeletal support during distal movement of teeth to create space for crowded teeth, normalization of the overjet and occlusion of dentition. The results showed that in group I, for all indicators after treatment, there were highly statistically significant changes at the significance level of 0.005 compared to the values before treatment; In group II, except for SNB, for all other indicators, there were statistically significant changes at the level of 0.005 after treatment compared with before treatment; in group III, except for IMPA, APogI and SNA, for all other indicators, there were statistically significant changes at the level of 0.005 after treatment compared with before treatment.
Conclusion.
Planning of orthodontic treatment with the analysis of cone-beam computed tomography provides complete information about the severity of skeletal deformation of the patient’s skull.

Key words:

class III malocclusion, cone beam computed tomography, corticotomy, dental-alveolar adaptation

For Citation

[1]
Losev F.F., Popova N.V., Arsenina O.I., Makhortova P.I., Nadtochiy A.G. Cone beam computed tomography assessment of orthodontic treatment results in patients with sagittal skeletal anomalies. Clinical Dentistry (Russia).  2022; 25 (1): 81—90. DOI: 10.37988/1811-153X_2022_1_81

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Received

January 25, 2022

Accepted

March 2, 2022

Published on

March 1, 2022