DOI:

10.37988/1811-153X_2024_3_125

Population-epidemiological randomized clinical study of harmonious development of the lower face height by 3D cephalometry. Part I. Individual rate

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Authors

  • I.P. Panaiotov 1, postgraduate at the Orthodontics Department
    ORCID: 0000-0001-7790-4559
  • A.B. Slabkovskaya 1, Doctor of Science in Medicine, full professor of the Orthodontics Department
    ORCID: 0000-0001-8154-5093
  • R.R. Magomedov 1, postgraduate at the Orthodontics Department
    ORCID: 0000-0002-8445-1540
  • L.S. Persin 1, Russian Academy of Medical Science corresponding member, Doctor of Science in Medicine, full professor of the Orthodontics Department
    ORCID: 0000-0001-9971-5054
  • 1 Moscow State University of Medicine and Dentistry, 127473, Moscow, Russia

Abstract

Objective: To assess the average values of parameter ranges across the population that may influence the vertical dimensions of the lower face height (LFH) in individuals with normal occlusion (NO), considering different types of craniofacial growth, with the aim of establishing adequate cephalometric standards for reference in orthodontic therapy and orthopedic rehabilitation.
Materials and methods.
The study population consisted of male and female subjects aged 16—45 years with normal occlusion and different cranial growth types, who underwent general diagnostics of the dentofacial system (DFS) and temporomandibular joint (TMJ). A 3D cephalometric calculation and analysis of 35 CBCT scans were conducted. The study focused on analyzing parameters characterizing the morphological features of the facial skull using 3D cephalometry.
Results.
 When comparing the obtained values with the norm, 6 significant parameters influencing LFH were identified. In individuals with a horizontal cranial growth type, two parameters had statistically significant effects: the posterior height of the lower face (SNP—Go) and the occlusal plane angle relative to the skull base (Ocp/NSL), with p<0.05. One parameter, the lower face height angle between points SNA/Sat/Me, had a highly statistically significant influence, with p<0.01. In individuals with a vertical cranial growth type, two parameters had highly statistically significant effects: the incisal-tuberal (alveolar) wall of the maxilla (IMS—MT) and the lower face height angle by Ricketts (Xi), with p<0.01. Additionally, one parameter, the lower face height angle between points SNA/Sat/Me, had a statistically significant influence with p<0.05. Conclusions: The study demonstrated differences in the identified parameters in individuals with normal occlusion. Using the proposed analysis method, it is possible to determine the average parameter ranges across the population that influence the vertical dimensions of the lower face height in individuals with normal occlusion, considering different cranial growth types. The cephalometric analysis of 35 CBCT scans confirmed that normal occlusion of teeth is not associated with cranial growth type.

Key words:

vertical occlusal dimension, maxillary triangle (MT), cranial growth, 3D cephalometry.

For Citation

[1]
Panaiotov I.P., Slabkovskaya A.B., Magomedov R.R., Persin L.S. Population-epidemiological randomized clinical study of harmonious development of the lower face height by 3D cephalometry. Part I. Individual rate. Clinical Dentistry (Russia).  2024; 27 (3): 125—133. DOI: 10.37988/1811-153X_2024_3_125

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Received

June 28, 2023

Accepted

August 30, 2024

Published on

October 2, 2024