Anatomical characteristics of mandibular bone in skeletal Class I, II and III patients by using cone beam computed tomography images in an iranian population

Authors

  • Mohammad Zandi Professor ,Department of Oral and Maxillofacial Surgery, Dental School ,Hamadan University of Medical Sciences, Hamadan, Iran https://orcid.org/0000-0003-1238-186X
  • Abbas Shokri Dental Implant Research Center ,Department of Oral and Maxillofacial Radiology, Dental School, Hamadan University of Medical Sciences, Hamadan,
  • Vahid Mollabashi Associate Professor, Dental Research Center ,Department of Orthodontics, Dental School, Hamadan University of Medical Sciences, Hamadan, Iran https://orcid.org/0000-0002-8450-7604
  • Zahed Eghdami General Dentist https://orcid.org/0000-0002-6250-5536
  • Payam Amini Department of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran https://orcid.org/0000-0001-8675-0045

DOI:

https://doi.org/10.14295/bds.2021.v24i2.2475

Abstract

Objetive: This study aimed to compare the anatomical characteristics of the mandible in patients with skeletal class I, II and class III disorders using cone beam computed tomography (CBCT). Material and Methods: CBCT scans of patients between 17 to 40 years taken with NewTom 3G CBCT system with 12-inch field of view (FOV) were selected from the archive. Lateral cephalograms were obtained from CBCT scans of patients, and type of skeletal malocclusion was determined (Class I, II or III). All CBCT scans were evaluated in the sagittal, coronal and axial planes using the N.N.T viewer software. Results: The ramus height and distance from the mandibular foramen to the sigmoid notch in class II patients were significantly different from those in skeletal class I (P < 0.005). Distance from the mandibular canal to the anterior border of ramus in class III individuals was significantly different from that in skeletal class I individuals (P < .005). Conclusion: Length of the body of mandible in skeletal class I was significantly different from that in skeletal class II and III patients. Also, ramus height in skeletal class I was significantly different from that in skeletal class II patients. CBCT had high efficacy for accurate identification of anatomical landmarks.

 

Keywords

Prognathism; Retrognathism; Mandible; Anatomy; Cone beam computed tomography.

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Published

2021-03-31

Issue

Vol. 24 No. 2 (2021): Apr - Jun / 2021 - published Mar 2021

Section

Clinical or Laboratorial Research

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All manuscript's copyright ownership of the article "____________________________________________________________________" is transferred from the author(s) to the BRAZILIAN DENTAL SCIENCE, in the event the work is published. The manuscript has not been published elsewhere and that it has not been submitted simultaneously for publication elsewhere.

We hereby attest the study is original and does not present manipulated data, fraud or plagiarism. We made significant scientific contribution to the study and we are aware of the presented data and in agreement with the final version of the manuscript. We assume complete responsibility for the ethical aspects of the study.

 

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