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Stomatologija 2003; 5 (1): 13-16 178 KB

Pharyngeal Airway Sagittal Dimension in Patients with Class III Skeletal Dentofacial Deformity Before and After Bimaxillary Surgery

Dace Cakarne, Ilga Urtane, Andrejs Skagers

Summary

The aim of the present study was to estimate the mean values for the pharyngeal airway sagittal dimension in the three levels –naso, oro and hypopharyngeal – for the young adult patients with Class III dentofacial skeletal morphology in comparison with Class I patients with normal dentofacial morphology. Class III skeletal dentofacial anomalies in adults is most often treated by mandibular setback surgery. According to literature date this kind of treatment has an effect on airway anatomy, and in that way to diminish the potential of airway size. Effect of the bimaxillary surgery for correcting Class III dentofacial skeletal deformities has not been fully described in the literature. Therefore the second aim of this study was to estimate the changes in the pharyngeal airway sagittal dimension in patients with Class III skeletal dentofacial deformities after bimaxillary orthognatic surgery. The material consisted of 35 cephalometric radiographs of patients with Class III skeletal dentofacial deformity before orthodontic treatment and orthognathic surgery. From these 22 females (mean age 17.9 year) have had bimaxillary surgery and second cephalometric radiograms were taken 8 month after surgery.A paired t test was used to evaluate the difference between Class I and Class III pharyngeal airway sagittal dimension measurements and statistical analysis revealed a highly significant difference in naso and hypopharyngeal levels.Pre and postoperative changes in the pharyngeal airway sagittal dimension after bimaxillary surgery showed statisticaly significant increase in nasopharyngeal airway space,without significant reduction in oro and hypopharyngeal level.

Key words: pharyngeal airway sagittal dimension, Class III dentofacial skeletal morphology, bimaxillary surgery

Address correspondence to Dr. Dace Cakarne: Department of Orthodontics, Riga Stradins University, Institute of Stomatology, 20 Dzirciema Street, Riga, Latvia, LV 1007, E-mail: dcakarne@e-apollo.lv

Received: 30 01 2003

Accepted for publishing: 25 03 2003



	Baltic Dental and Maxillofacial Journal

2003, Vol. 5, No. 1 CONTENTS Analysis of Experimental and Clinical Research of Destruction of Peripheral Branches of the Trigeminal Nerve Electrophoresis of Whole-cell Soluble Proteins of Enterococcus faecalis and Yeast Isolated in the Root Canals of Previously Root-filled Teeth Pharyngeal Airway Sagittal Dimension in Patients with Class III Skeletal Dentofacial Deformity Before and After Bimaxillary Surgery Late Results of the Secondary Alveolar Bone Grafting in Complete Unilateral Cleft Lip and Palate Patients Prediction of Malocclusion Development Based on the Evaluation of the Ethiologic Factors Analysis of Tooth Size Discrepancy (Bolton Index) among Patients of Orthodontic Clinic at Kaunas Medical University Oral Hygiene Habits and Complaints of Gum Bleeding Among Schoolchildren in Lithuania © 2003, Stomatologija		Stomatologija 2003; 5 (1): 13-16 178 KB Pharyngeal Airway Sagittal Dimension in Patients with Class III Skeletal Dentofacial Deformity Before and After Bimaxillary Surgery Dace Cakarne, Ilga Urtane, Andrejs Skagers Summary The aim of the present study was to estimate the mean values for the pharyngeal airway sagittal dimension in the three levels –naso, oro and hypopharyngeal – for the young adult patients with Class III dentofacial skeletal morphology in comparison with Class I patients with normal dentofacial morphology. Class III skeletal dentofacial anomalies in adults is most often treated by mandibular setback surgery. According to literature date this kind of treatment has an effect on airway anatomy, and in that way to diminish the potential of airway size. Effect of the bimaxillary surgery for correcting Class III dentofacial skeletal deformities has not been fully described in the literature. Therefore the second aim of this study was to estimate the changes in the pharyngeal airway sagittal dimension in patients with Class III skeletal dentofacial deformities after bimaxillary orthognatic surgery. The material consisted of 35 cephalometric radiographs of patients with Class III skeletal dentofacial deformity before orthodontic treatment and orthognathic surgery. From these 22 females (mean age 17.9 year) have had bimaxillary surgery and second cephalometric radiograms were taken 8 month after surgery.A paired t test was used to evaluate the difference between Class I and Class III pharyngeal airway sagittal dimension measurements and statistical analysis revealed a highly significant difference in naso and hypopharyngeal levels.Pre and postoperative changes in the pharyngeal airway sagittal dimension after bimaxillary surgery showed statisticaly significant increase in nasopharyngeal airway space,without significant reduction in oro and hypopharyngeal level. Key words: pharyngeal airway sagittal dimension, Class III dentofacial skeletal morphology, bimaxillary surgery Address correspondence to Dr. Dace Cakarne: Department of Orthodontics, Riga Stradins University, Institute of Stomatology, 20 Dzirciema Street, Riga, Latvia, LV 1007, E-mail: dcakarne@e-apollo.lv Received: 30 01 2003 Accepted for publishing: 25 03 2003