Nasal Profile and Its Relationship with Sagittal Dentoskeletal Pattern and Age in Iranian Adults

Mahdis  Jahanbakhsh; Alireza  Ghaderi Namin; Zohreh  Reyhani; Farzane  Ahmadi; Azin  Nourian

doi:10.18502/jcr.v11i4.18711

Mahdis Jahanbakhsh School of Dentistry, Zanjan University of Medical Sciences, Zanjan, Iran.
Alireza Ghaderi Namin School of Dentistry, Zanjan University of Medical Sciences, Zanjan, Iran.
Zohreh Reyhani Department of Oral and Maxillofacial Radiology, School of Dentistry, Zanjan University of Medical Sciences, Zanjan, Iran.
Farzane Ahmadi Department of Biostatistics, School of Dentistry, Zanjan University of Medical Sciences, Zanjan, Iran.
Azin Nourian Department of Orthodontics, School of Dentistry, Zanjan University of Medical Sciences, Zanjan, Iran.

DOI: https://doi.org/10.18502/jcr.v11i4.18711

Keywords: Age; Cephalometry; Dentoskeletal pattern; Face; Nose.

Abstract

Introduction: The nose, centrally positioned and a prominent facial feature, plays a critical role in facial aesthetics. Clinicians must understand its morphology and relationship with adjacent structures for optimal aesthetic outcomes. This study aims to investigate nasal morphology in Iranian adults and its correlation with sagittal dentoskeletal patterns and age.

Materials and Methods: Five linear and six angular parameters were measured on the lateral cephalograms of 300 Iranian adults, acquired in 2022 from the records of a private radiology center in Zanjan city. One-way ANOVA and Spearman`s correlation coefficient were used to analyze the data.

Results: The mean values of nasal depth, Holdaway`s nose prominence, nasofacial angle, nasomental angle, nasolabial angle and LNLA were not equal in different sagittal dentoskeletal patterns. The mean nasal depth in Class III individuals was significantly higher than in Class II div. 1 individuals. The mean of Holdaway’s nose prominence in Class II div. 2 subjects was significantly higher than in Class II div. 1 subjects. The mean nasofacial angle in Class II subjects was significantly higher than in Class I subjects and in Class I subjects was significantly higher than in Class III subjects. The mean nasomental angle in Class III subjects was significantly higher than in Class I subjects and in Class I subjects it was significantly higher than in Class II subjects. Furthermore, the mean nasolabial angle and LNLA were significantly higher in Class II Div. 2 subjects than in Class III subjects. Among measured parameters, only Nasal depth showed a weak positive correlation with age with a correlation coefficient of 0.145.

Conclusion: Nose morphology in the Iranian population has a significant relationship with the sagittal dentoskeletal pattern. The measured parameters, except for nasal depth, were not correlated with the age of the subjects.