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Stomatologija 2016; 18 (1): 21-5 615 KB

Vertical and sagittal morphology of the facial skeleton and the pharyngeal airway

Kristina Lopatienė, Agnė Dabkutė, Viktorija Juškevičiūtė

Summary

Aim. The aim of this study was to evaluate the relationship between sagittal and vertical facial skeletal morphology, and the morphology of the upper and lower pharyngeal airway.

Material and methods. Pharyngeal airway structures were studied in 101 healthy children (36 boys and 65 girls) aged 7-17 years who were referred for orthodontic treatment. The sample was divided into two groups: according size of the ANB angle group Class I: angle till 4º was considered as skeletal Angle Class I; group Class II: ANB angle more than 4º, considered as skeletal Angle Class II. The vertical pattern was classified using the SN-MP angle, with angle less than 34 taken as normal, and more than 34 – as high vertical growth patterns. The linear measurements and angles were calculated using special purpose software (Dolphin v. 11.0). Pharyngeal width was measured at different point levels using Arnett/Gunson airway analysis.

Results. A statistically significant difference between the two groups, and airway width on all levels was statistically significantly narrower in Angle Class II. Pearson’s correlation coefficient showed a negative statistically significant dependence between nasopharyngeal airway, oropharyngeal airway space, and SN-MP angle.

Conclusion. Statistically significantly narrower airways were found in patients with ANB more than 4°. In groups divided by SN-MP angle statistically significant difference have not found. Nasopharyngeal airway and oropharyngeal airway spaces statistically significantly negatively correlated with the SN-MP angle: the bigger the SN-MP angle, the smaller were nasopharyngeal and oropharyngeal airway spaces.

Key words: class II malocclusion, cephalometry, upper airway dimensions, airway width.

Received: 10 04 2015

Accepted for publishing: 28 03 2016

¹Department of Orthodontics, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania

²Ariogala’s primary health care center, Ariogala, Lithuania

³Lithuanian University of Health Sciences, Kaunas, Lithuania

Kristina Lopatienė¹ – D.D.S., PhD, assoc. prof.

Agnė Dabkutė² – D.D.S.

Viktorija Juškevičiūtė³ – D.D.S.

Address correspondence to Agnė Dabkutė, Vytauto str. 96, 60260 Ariogala, Lithuania.

E-mail address: a.dabkute@gmail.com



	Baltic Dental and Maxillofacial Journal

March, 2016, Vol. 18, No. 1 CONTENTS REVIEW Prevention and treatment of white spot lesions during and after fixed orthodontic treatment: A systematic literature review Egle Lapenaite, Kristina Lopatiene, Aira Ragauskaite 3-8 SCIENTIFIC ARTICLES Hypericum perforatum L. treatment restored bone mass changes in swimming stressed rats Nikos Seferos, Loukas Petrokokkinos, Antonia Kotsiou, George Rallis, Christine Tesseromatis 9-13 Factors influencing the caries experience of 6 and 12 year old children in Riga, Latvia Jekaterina Gudkina, Anda Brinkmane, Stephen H. Abrams, Bennett T. Amaechi 14-20 Vertical and sagittal morphology of the facial skeleton and the pharyngeal airway Kristina Lopatienė, Agnė Dabkutė, Viktorija Juškevičiūtė 21-25 Prevention of Occlusal Caries using a Ozone, Sealant and Fluoride Varnish in Children Julija Kalnina, Ruta Care 26-31 CASE REPORT Direct composite resin crown fabrication on a custom formed root canal post – EverStick®POST Valdas Vilkinis, Juozas Žilinskas 32-36 © 2016 Stomatologija		Stomatologija 2016; 18 (1): 21-5 615 KB Vertical and sagittal morphology of the facial skeleton and the pharyngeal airway Kristina Lopatienė, Agnė Dabkutė, Viktorija Juškevičiūtė Summary Aim. The aim of this study was to evaluate the relationship between sagittal and vertical facial skeletal morphology, and the morphology of the upper and lower pharyngeal airway. Material and methods. Pharyngeal airway structures were studied in 101 healthy children (36 boys and 65 girls) aged 7-17 years who were referred for orthodontic treatment. The sample was divided into two groups: according size of the ANB angle group Class I: angle till 4º was considered as skeletal Angle Class I; group Class II: ANB angle more than 4º, considered as skeletal Angle Class II. The vertical pattern was classified using the SN-MP angle, with angle less than 34 taken as normal, and more than 34 – as high vertical growth patterns. The linear measurements and angles were calculated using special purpose software (Dolphin v. 11.0). Pharyngeal width was measured at different point levels using Arnett/Gunson airway analysis. Results. A statistically significant difference between the two groups, and airway width on all levels was statistically significantly narrower in Angle Class II. Pearson’s correlation coefficient showed a negative statistically significant dependence between nasopharyngeal airway, oropharyngeal airway space, and SN-MP angle. Conclusion. Statistically significantly narrower airways were found in patients with ANB more than 4°. In groups divided by SN-MP angle statistically significant difference have not found. Nasopharyngeal airway and oropharyngeal airway spaces statistically significantly negatively correlated with the SN-MP angle: the bigger the SN-MP angle, the smaller were nasopharyngeal and oropharyngeal airway spaces. Key words: class II malocclusion, cephalometry, upper airway dimensions, airway width. Received: 10 04 2015 Accepted for publishing: 28 03 2016 ¹Department of Orthodontics, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania ²Ariogala’s primary health care center, Ariogala, Lithuania ³Lithuanian University of Health Sciences, Kaunas, Lithuania Kristina Lopatienė¹ – D.D.S., PhD, assoc. prof. Agnė Dabkutė² – D.D.S. Viktorija Juškevičiūtė³ – D.D.S. Address correspondence to Agnė Dabkutė, Vytauto str. 96, 60260 Ariogala, Lithuania. E-mail address: a.dabkute@gmail.com