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Comparison of upper airway measurement by lateral cephalogram in upright position and CBCT in supine position
BACKGROUND/PURPOSE: Obstructive sleep apnea syndrome (OSAS) is a common form of sleep disorder. Lateral cephalograms and cone-beam computed tomography (CBCT) have been used for evaluation. However, it is lack of position comparison for these two assessments. Therefore, this study was aimed to evalua...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Association for Dental Sciences of the Republic of China
2019
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6558349/ https://www.ncbi.nlm.nih.gov/pubmed/31205607 http://dx.doi.org/10.1016/j.jds.2019.01.007 |
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author | Hsu, Wun Eng Wu, Tzu Ying |
author_facet | Hsu, Wun Eng Wu, Tzu Ying |
author_sort | Hsu, Wun Eng |
collection | PubMed |
description | BACKGROUND/PURPOSE: Obstructive sleep apnea syndrome (OSAS) is a common form of sleep disorder. Lateral cephalograms and cone-beam computed tomography (CBCT) have been used for evaluation. However, it is lack of position comparison for these two assessments. Therefore, this study was aimed to evaluate the difference of upper airway measurements taken from lateral cephalograms in upright position and CBCT in supine position. MATERIAL AND METHODS: This retrospective study enrolled patients with lateral cephalograms and CBCT images due to diagnostic necessity. The anterior-posterior distance of most constricted area in pharynx (PASmin) and the distance from mandibular plane to hyoid bone (MP-H) were identified and measured from 21 normal subjects without obstructive sleep apnea (9 males and 12 females, mean age 21.2 years). A paired data were measured from lateral cephalograms taken in upright position and lateral cephalometric images derived from CBCT taken in supine position. Both images were taken within two months. All data were analyzed statistically. RESULTS: No significant difference was identified in intra-examiner reliability (P > 0.05). PASmin measured from lateral cephalograms in upright position was larger than that taken from CBCT derived cephalometric images, but without statistical significant difference (P = 0.073). Significant difference of MP-H length was identified between two different image taking methods (P = 0.000), and the measurement was significantly larger in cephalograms taken from upright position. No correlations were found among the variables (Body Mass Index (BMI), age, gender) in this study. The only two variables correlated were PASmin and MP-H, and they were negatively correlated (r = −0.535). CONCLUSION: The anterior-posterior distance of most constricted area in pharynx (PASmin) and distance of mandibular plane to hyoid bone (MP-H) can be influenced due to change of body position. |
format | Online Article Text |
id | pubmed-6558349 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Association for Dental Sciences of the Republic of China |
record_format | MEDLINE/PubMed |
spelling | pubmed-65583492019-06-14 Comparison of upper airway measurement by lateral cephalogram in upright position and CBCT in supine position Hsu, Wun Eng Wu, Tzu Ying J Dent Sci Original Article BACKGROUND/PURPOSE: Obstructive sleep apnea syndrome (OSAS) is a common form of sleep disorder. Lateral cephalograms and cone-beam computed tomography (CBCT) have been used for evaluation. However, it is lack of position comparison for these two assessments. Therefore, this study was aimed to evaluate the difference of upper airway measurements taken from lateral cephalograms in upright position and CBCT in supine position. MATERIAL AND METHODS: This retrospective study enrolled patients with lateral cephalograms and CBCT images due to diagnostic necessity. The anterior-posterior distance of most constricted area in pharynx (PASmin) and the distance from mandibular plane to hyoid bone (MP-H) were identified and measured from 21 normal subjects without obstructive sleep apnea (9 males and 12 females, mean age 21.2 years). A paired data were measured from lateral cephalograms taken in upright position and lateral cephalometric images derived from CBCT taken in supine position. Both images were taken within two months. All data were analyzed statistically. RESULTS: No significant difference was identified in intra-examiner reliability (P > 0.05). PASmin measured from lateral cephalograms in upright position was larger than that taken from CBCT derived cephalometric images, but without statistical significant difference (P = 0.073). Significant difference of MP-H length was identified between two different image taking methods (P = 0.000), and the measurement was significantly larger in cephalograms taken from upright position. No correlations were found among the variables (Body Mass Index (BMI), age, gender) in this study. The only two variables correlated were PASmin and MP-H, and they were negatively correlated (r = −0.535). CONCLUSION: The anterior-posterior distance of most constricted area in pharynx (PASmin) and distance of mandibular plane to hyoid bone (MP-H) can be influenced due to change of body position. Association for Dental Sciences of the Republic of China 2019-06 2019-03-28 /pmc/articles/PMC6558349/ /pubmed/31205607 http://dx.doi.org/10.1016/j.jds.2019.01.007 Text en © 2019 Association for Dental Sciences of the Republic of China. Publishing services by Elsevier B.V. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Original Article Hsu, Wun Eng Wu, Tzu Ying Comparison of upper airway measurement by lateral cephalogram in upright position and CBCT in supine position |
title | Comparison of upper airway measurement by lateral cephalogram in upright position and CBCT in supine position |
title_full | Comparison of upper airway measurement by lateral cephalogram in upright position and CBCT in supine position |
title_fullStr | Comparison of upper airway measurement by lateral cephalogram in upright position and CBCT in supine position |
title_full_unstemmed | Comparison of upper airway measurement by lateral cephalogram in upright position and CBCT in supine position |
title_short | Comparison of upper airway measurement by lateral cephalogram in upright position and CBCT in supine position |
title_sort | comparison of upper airway measurement by lateral cephalogram in upright position and cbct in supine position |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6558349/ https://www.ncbi.nlm.nih.gov/pubmed/31205607 http://dx.doi.org/10.1016/j.jds.2019.01.007 |
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