Objective: The aim the study was to evaluate area and volumetric changes in the upper airway after bimaxillary correction of Class III malocclusion by the means of computer tomography (CT), and to compare these to the changes in linear measurements from lateral cephalograms.
Study Design: This was a prospective clinical trial. Lateral cephalograms and CT scans of 10 Class III patients were evaluated 1 week before and 6 months after surgery. Wilcoxon matched pairs signed ranks test was used to determine the differences in measurements pre- and postoperatively. Spearman's rank correlation was used to test the association between the CT and cephalometric measurements.
Results: CT measurements: The oropharyngeal and hypopharyngeal volumes increased by 3.98 +/- 4.18 cm(3) (P = .015) and 2.51 +/- 1.92 cm(3) (P = .021), respectively. The total volume of the posterior airway space increased, but the increase was not statistically significant. After surgery no change in the cross-sectional area of the upper airway was recorded at the retropalatal, oropharyngeal, or hypopharyngeal levels. Cephalometric measurements: The nasopharyngeal space increased 4.08 +/- 5.07 mm (P = .039) and the tongue increased in length by 4.84 +/- 5.93 mm (P = .22). No correlation was found between the measurements on CT scans and corresponding measurements on the lateral cephalograms.
Conclusions: Bimaxillary surgery for correction of Class III malocclusion did not cause decrease of the posterior airway space. Three-dimensional imaging techniques are preferable to 2-dimensional lateral cephalograms for evaluation of the upper airway after orthognathic procedures.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.tripleo.2010.03.026 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The effects of mandibular setback surgery on the upper airway and sleep quality in skeletal Class III patients and comparison with control subjects: a pilot study.
Int J Oral Maxillofac Surg
January 2025
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand. Electronic address:
The aim of this study was to determine the effects of mandibular setback surgery exceeding 5 mm on upper airway and sleep quality in skeletal Class III patients, with comparisons to Class I controls. Sixteen individuals per group were selected based on their ANB angle and surgical need. 2D and 3D airway analyses were conducted.
View Article and Find Full Text PDFDysregulation of Airway and Systemic Interferon Responses Promote Asthma Exacerbations in Urban Children.
J Allergy Clin Immunol
January 2025
Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI.
Background: Determining why some upper respiratory illnesses provoke asthma exacerbations remains an unmet need.
Objective: To identify transcriptome-wide gene expression changes associated with colds that progress to exacerbation.
Methods: 208 urban children (6-17 years) with exacerbation-prone asthma were prospectively monitored for up to two cold illnesses.
Effectiveness of Using Checklist in Preventing Facial, Nasal and Head Pressure Injuries in Preterm Infants in Nasal Noninvasive Mechanic Ventilation: A Quasi-Experimental Study.
J Perinat Neonatal Nurs
October 2024
Author Affiliations: Department of Child Health and Diseases Nursing (Dr Güner Başara), Faculty of Health Sciences, Gaziosmanpaşa University, Tokat, Turkey; and Department of Child Health and Diseases Nursing, Faculty of Nursing (Dr Çalışır), Department of Neonatology, Faculty of Medicine (Dr Kaynak Türkmen, retired), Aydın Adnan Menderes University, Aydın, Turkey.
Background: Noninvasive mechanical ventilation (NIMV), when in synchronized intermittent mandatory ventilation, continuous positive airway pressure, or patient-triggered ventilation modes, is known to be a cause of facial, nasal, head, and skin pressure injuries in preterm infants.
Objective: The objective of this study is to examine the efficacy of using a checklist with preterm infants under nasal NIMV in preventing facial, nasal, and head pressure injuries.
Method: The study was conducted quasi-experimentally on preterm infants under NIMV.
Simultaneous Lefort 2 Distraction and Fronto-Orbito-Malar Advancement: Correcting Severe Upper and Midface Retrusion in a Patient With Crouzon Syndrome.
J Craniofac Surg
December 2024
Member of Sociedad Argentina de Ortodoncia, Member of International Society of Craneofacial Surgery, Member of Asociación Latinoamericana de Ortodoncia, Buenos Aires, Argentina.
Craniofacial syndromes present with exorbitism and airway obstruction as a result of upper and middle facial hypoplasia. Classical subcranial Lefort III (LF III) or monobloc distraction osteogenesis (DO) using an external craniofacial device is used to treat these deformities. These procedures are done during mixed dentition, in most cases, advancing an abnormal face, to a more normal position.
View Article and Find Full Text PDFAngioedema in a 9-year-old Child after Dental Treatment: A Rare Complication Explored through a Case Report.
Int J Clin Pediatr Dent
November 2024
Department of Pediatric and Preventive Dentistry, Indira Gandhi Institute of Dental Sciences, Sri Balaji Vidyapeeth, Puducherry, India.
Aim And Background: Angioedema is a nonpruritic swelling that typically affects the skin, mucous membranes of the face, and perioral soft tissues. It can be life-threatening, but it is usually not and can be treated conservatively unless the airway is compromised. This paper seeks to illuminate a rare case of hereditary angioedema (HAE) onset following dental procedures in a 9-year-old Indian boy.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!