three dimensional study of upper airway in different antero-posterior jaw relationships through cone beam computed tomography

Authors

abolfazl dadbin shahed school of dentistry, shahed university of medical sciences, tehran, iran

abbas salehivaziri department of orthodontics, shahed school of dentistry, shahed university of medical sciences, tehran, iran

maryam basirat department of oral medicine, rasht school of dentistry, guilan university of medical sciences, rasht, iran

shahab shahriar department of oral & maxillofacial radiology, shahed school of dentistry, shahed university of medical sciences, tehran, iran

abstract

introduction: this study aims at examining the difference of pharyngeal airways in patients with different occlusion postures, hoping to im prove diagnostic methods and provide a stable treatment plan for orthodontic patients. materials and methods: the data were ga-thered through cbct radiographies of patients from a specialized center for radiology. in each occlusion group according to the performed pilot study, 30 people (90 people in 3 groups of class i, ii and iii, male and female each) were chosen as the sample. the two-di mentional cephalometric radiographs were ob tained from 3d-radio-graphs, and the patients’ malocclusion postures were de termined according overjet and anb angle, and finally grouped. next, airway volume and di mensions were measured in cross sectional. results: statistical studies showed there is a significant relationship between anteroposte-rior positions of mandible and the volume of pharyngeal airway. also, the volume of pharyn-geal airway in class iii patients is more than those of patients in class i. the volume of pha-ryngeal airway in class ii patients is also less than those of class1 patients. conclusion: pharyngeal airway in class iii is larger and in class ii smaller. therefore, consi-dering this subject can lead to improving diag-nostic ways, especially orthognatic surgery treatments, and providing a stable treatment plan for patients who need orthodentic treat-ment

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Three Dimensional Study of Upper Airway in Different Antero-posterior Jaw Relationships through Cone Beam Computed Tomography

Introduction: This study aims at examining the difference of pharyngeal airways in patients with different occlusion postures, hoping to im‌prove diagnostic methods and provide a stable treatment plan for orthodontic patients. Materials and Methods: The data were ga-thered through CBCT radiographies of patients from a specialized center for radiology. In each occlusion group according to the p...

full text

Dimensional changes of upper airway after rapid maxillary expansion: a prospective cone-beam computed tomography study.

INTRODUCTION The aim of this prospective study was to use cone-beam computed tomography to assess the dimensional changes of the upper airway in orthodontic patients with maxillary constriction treated by rapid maxillary expansion. METHODS Fourteen orthodontic patients (mean age, 12.9 years; range, 9.7-16 years) were recruited. The patients with posterior crossbite and constricted maxilla wer...

full text

Correlation Between Tissue Densities in Computed Tomography and Three Different Cone-Beam Computed Tomography Units (In Vitro)

Background and Aim: Bone density is of great assistance in the selection of the proper implant site. The present study aimed to assess the correlation between tissue densities in computed tomography (CT) and three different cone-beam computed tomography (CBCT) units. Materials and Methods: In this descriptive study, a radiographic phantom consisting of a transparent polymethyl methacrylate (PM...

full text

Methods to evaluate the performance of kilovoltage cone-beam computed tomography in the three-dimensional reconstruction space

Background: Cone-beam computed tomography (CBCT) scanners for image-guided radiotherapy are in clinical use today, but there has been no consensus on uniform acceptance to verify the CBCT image quality yet. The present work proposed new methods to fully evaluate the performance of CBCT in its three-dimensional (3D) reconstruction space. Materials and Methods: Compared to the traditional methods...

full text

Three-dimensional analysis of the airway with cone-beam computed tomography.

INTRODUCTION In this study, using a cone-beam computed tomography system, we evaluated the airways of 30 adults. METHODS The shapes of the 3-dimensional volume of the airway were analyzed and compared among the subjects by using surface superimposition software techniques. RESULTS The airway had the greatest variability in the hypopharynx, in the region below the epiglottis, and above the v...

full text

Gender assessment through three-dimensional analysis of maxillary sinuses by means of cone beam computed tomography.

OBJECTIVE The availability of a low dose radiation technology such as Cone Beam Computed Tomography (CBCT) in dental practice has increased the number of scans available for forensic purposes. Moreover, specific software allows for three-dimensional (3D) characterization of the maxillary sinuses. This study was performed to determine whether sinus maxillary volumes can be useful to identify gen...

full text

My Resources

Save resource for easier access later


Journal title:
journal of dentomaxillofacil radiology, pathology and surgery

جلد ۲، شماره ۳، صفحات ۸-۱۶

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023