DOI:

10.37988/1811-153X_2022_3_60

Computer tomography application for infra zygomatic region examination for orthodontics mini screw install

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Authors

  • S.A. Larina 1, 5th year student at the Department of Dentistry
    ORCID: 0000-0002-2348-068X
  • A.O. Gegamyan 1, assistant at the Pediatric dentistry Department
    ORCID: 0000-0002-8176-8913
  • L.R. Sarap 1, PhD in Medical Sciences, full professor of the Pediatric dentistry Department
    ORCID: 0000-0001-6599-1683
  • E.A. Podzorova 1, PhD in Medical sciences, associate professor of the Pediatric dentistry Department
    ORCID: 0000-0001-9618-3611
  • A.A. Lytkina 1, assistant at the Pediatric dentistry Department
    ORCID: 0000-0003-1567-7092
  • Yu.N. Shilova 1, PhD in Medical sciences, associate professor of the Pediatric dentistry Department
    ORCID: 0000-0002-0605-6983
  • 1 Altai State Medical University, 656038, Barnaul, Russia

Abstract

This article reviews the experience of using computed tomography to determine the anatomical and morphological features of the submucosal ridge as a choice of placement site for an orthodontic miniscrew. . Analysis of computed tomograms from 20 patients (age 18-45 years) with dentoalveolar anomalies and normodivergent facial growth type was performed. The bone thickness in the selected area and the length of the presumed miniscrew in each selected area were determined. . In 7 (35%) patients, the greatest amount of bone was found in the area of the distal-cheek root of the first molar. The average thickness in this area was 3.4 mm. In the area of the medial-cheek root of the first molar, the greatest bone thickness was found in only 3 (15%) patients. The average bone thickness in this area was 2.6 mm, but the minimum thickness was 2.2 mm, insufficient for the insertion of a mini screw. In 5 (25%) patients, the area between the first and second molars was the site of choice for mini screw insertion. The average thickness was 3.7 mm. However, in the area of the medial-cheek root of the second molar, a higher mean bone thickness was found; despite this, in only 5 (25%) patients, this area was selected for the insertion of mini screws. The average value was 3.8 mm. At the same time, the greatest length was required in the area of the medial-cheek root of the second molar. . According to the data obtained, the area of the distal-cheek root of the first molar was selected as the site of choice for inserting an orthodontic mini-screw, and the recommended length of the mini-screw was 17.7 mm.

Key words:

mini screw, IZC, computer tomography

For Citation

[1]
Larina S.A., Gegamyan A.O., Sarap L.R., Podzorova E.A., Lytkina A.A., Shilova Yu.N. Computer tomography application for infra zygomatic region examination for orthodontics mini screw install. Clinical Dentistry (Russia).  2022; 25 (3): 60—66. DOI: 10.37988/1811-153X_2022_3_60

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Received

May 27, 2022

Accepted

July 12, 2022

Published on

October 30, 2022