J Dent Hyg Sci.  2023 Sep;23(3):193-198. 10.17135/jdhs.2023.23.3.193.

Classification of Nasal Index in Koreans According to Sex

• Bae SS
• Jee HJ
• Park MG
• Lee JH

• KMID: 2546578
• DOI: http://doi.org/10.17135/jdhs.2023.23.3.193

Abstract

Background
The nose is located at the center of the face, and it is possible to determine race, sex, and the like. Research using the nasal index (NI) classification method to classify the shape of the nose is currently in progress. However, domestic research is required as most research is being conducted abroad. In this study, we used a 3D program to confirm the ratio of the nose shape of Koreans.
Methods
One hundred patients (50 males and 50 females) in their 20s were evaluated (IRB approval no. DKUDH IRB 2020-01-007). Cone beam computed tomography was performed using the Mimics ver.22 (Materialise Co., Leuven, Belgium) 3D program to model the patient’s skull and soft tissues into three views: coronal, sagittal, and frontal. To confirm the ratio of measurement metrics, analysis was performed using the SPSS ver. 23.0 (IBM Co., Armonk, NY, USA) program.
Results
Ten leptorrhine (long and narrow) type, 76 mesorrhine (moderate shape) type, and 14 platyrrhine (broad and short) type noses were observed. In addition, as a result of sex comparison, five males had the leptorrhine (long and narrow) type, 40 mesorrhine (moderate shape), and five platyrrhine (broad and short) types. For females, five patients had the leptorrhine (long and narrow) type, 36 patients had the mesorrhine (moderate shape) type, and nine patients had the platyrrhine (broad and short) type.
Conclusion
This study will be helpful when performing nose-related surgeries and procedures in clinical practice and for similar studies in the future.

Keyword

Asian people; Cone beam computed tomography; Koera; Nasal; Nose