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A Study on the Nasal Index of Malocclusion Patients Using Cone-Beam Computed Tomography 3D Program
J Dent Hyg Sci 2024;24:146-51
Published online September 30, 2024;  https://doi.org/10.17135/jdhs.2024.24.3.146
© 2024 Korean Society of Dental Hygiene Science.

Sung-Suk Bae1 , Hee-Jeung Jee2 , Yun-Ja Hwang3 , Ha-Rin Jang4 , Su-Jeong Kang4 , and Jeong-Hyun Lee4,†

1Department of Dental Hygiene, Hanseo University, Seosan 31962, 2Department of Bio Health Convergency Open Sharing System, Dental College, Dankook University, Cheonan 31116, 3Department of Center for Innovative Engineering Education, Dankook University, Yongin 16890, 4Department of Oral Anatomy, Dental College, Dankook University, Cheonan 31116, Korea
Correspondence to: †Jeong-Hyun Lee, https://orcid.org/0000-0001-8358-8679
Department of Oral Anatomy, Dental College, Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan 31116, Korea
Tel: +82-41-550-1926, Fax: +82-41-559-7898, E-mail: 911105jh@dankook.ac.kr
Received May 28, 2024; Revised August 20, 2024; Accepted August 23, 2024.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Background: Research is continuously being conducted on the relationship between the airway and malocclusion. The nose, as the upper part of the respiratory pathway, plays a critical role. While various international studies employ the Nasal Index classification for nasal morphology, domestic research remains scarce. This research investigates the proportions of nasal morphology in malocclusion patients utilizing a 3D software.
Methods: The study evaluated 100 malocclusion patients in their 20s (40 Class I, 34 Class II, 26 Class III). Cone-beam computed tomography was used with the Mimics (ver. 22; Materialise) 3D program to model the skull and soft tissues of the patients in three views: coronal, sagittal, and frontal.
Results: The results showed that in Class I, there were 5 leptorrhine (long and narrow) cases, 30 mesorrhine (moderate shape) cases, and 5 platyrrhine (broad and short) cases. In Class II, there were 3 leptorrhine, 25 mesorrhine, and 6 platyrrhine cases. In Class III, there were 2 leptorrhine, 21 mesorrhine, and 3 platyrrhine cases.
Conclusion: The findings of this study indicate that there is no significant correlation between the size of the nose and malocclusion in patients. Additionally, additional research related to this study is expected to be necessary.
Keywords : Cone-beam computed tomography, Korea, Malocclusion, Nasal, Nose

September 2024, 24 (3)
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