A comparative study of craniofacial measurements between Ryukyuan and mainland Japanese females using lateral cephalometric images

Yamauchi, Tadashi; Kimura, Ryosuke; Kawaguchi, Akira; Sato, Takehiro; Yamaguchi, Kyoko; Toma, Takashi; Miyamoto, Kiyoto; Fukase, Hitoshi; Yamaguchi, Tetsutaro; Ishida, Hajime

doi:10.1537/ase.151206

Cited by 2 publications

(2 citation statements)

References 69 publications

(72 reference statements)

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“…In another study, an analysis of data from mainland Japan and the Ryukyu Islands found that women from the island of Japan had smaller mandibular incisor, less depth of the upper lip, and an inclined to the front mandibular symphysis [26].…”

Section: Introductionmentioning

confidence: 96%

Determination of cephalometric parameters, which usually do not change during surgical and orthodontic treatment depending on facial types according to Garson in Ukrainian young men and young women with orthognathic occlusion

Drachevska

Dmitriev

Clifford

et al. 2020

Biomed. and Biosoc. Anthrop.

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Aesthetics is one of the key elements that accompanies modern medicine, in particular, dentistry. The need for treatment not only eliminates the symptoms of the disease but also leads to the restoration or improvement of the aesthetic appearance of the person, and especially the face, gave impetus to the development of new areas of science and technology. An important step in the implementation of such treatments is experimental research to identify the norm for certain categories of the population, primarily according to sex and ethnic group. The aim of the study was to establish the characteristics of cephalometric parameters in Ukrainian young men and young women with orthognathic occlusion, which usually do not change during surgical and orthodontic treatment, depending on sex and facial types. On the basis of the clinic "Vinintermed" teleroentgenography was performed using a dental cone-beam tomograph Veraviewepocs 3D Morita (Japan). Cephalometric examination of lateral teleroentgenograms in 46 young men (aged 17 to 21 years) and 72 young women (aged 16 to 20 years) with orthognathic occlusion was done. The type of face was determined according to the morphological index of Garson. The evaluation of parameters that usually do not change during surgical and orthodontic treatment was performed in the licensed package "Statistica 6.0" using non-parametric methods of evaluation of the results. The percentile ranges of cephalometric parameters, which usually do not change during surgical and orthodontic treatment depending on the facial types of Ukrainian young men and young women with orthognathic occlusion has been established. Pronounced manifestations of sexual dimorphism of cephalometric parameters, which usually do not change during surgical and orthodontic treatment (higher values in young men) are established only for most linear dimensions (values of distances NS, Ar-Go, N-Se, N-CC, P-PTV and S-Ar) in representatives of different types of faces. Both between young men and young women with different face types, there are almost no reliable or tendencies of differences in cephalometric parameters, which usually do not change during surgical and orthodontic treatment.

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Section: Introductionmentioning

confidence: 96%

Determination of cephalometric parameters, which usually do not change during surgical and orthodontic treatment depending on facial types according to Garson in Ukrainian young men and young women with orthognathic occlusion

Drachevska

Dmitriev

Clifford

et al. 2020

Biomed. and Biosoc. Anthrop.

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“…Using CT images, the present study aimed to reveal the anatomical backgrounds of the upper facial variations, particularly focusing on the nasal root protrusion and the eyeball position. In this context, Ryukyu Islanders and mainland Japanese are appropriate subjects, because there are significant variations in facial morphologies (Fukase et al, 2012;Miyazato et al, 2014;Yamauchi et al, 2016). For example, the people originating from Okinawa Island (one of the Ryukyu Islands in Japan) have a more chiseled face than those originating from mainland Japan (Miyazato et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Computed tomography examinations of the surface and internal morphologies of the upper face in Ryukyu Islanders and mainland Japanese population

Ito

Kimura

Ryukoden

et al. 2018

Anthropological Science

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Using computed tomography, we examined the surface and internal morphologies of the upper face of people living on the Ryukyu Islands and mainland Japanese, focusing on the nasal root protrusion and eyeball position. The results showed that the nasal root protrusion on the surface was influenced by a combination of changes in both hard and soft tissues, such as skeletal nasal protrusion, eyeball recession, and skin thickness. The eyeball position became more posterior as the orbital cavity height and depth increased. Compared with people originating from mainland Japan, Ryukyu Islanders had a more prominent nasal root at both surface and skeletal levels, and a lower orbital rim relative to its internal height. However, a significant difference in the eyeball position and skin thickness was not detected. Therefore, the skeletal nasal root protrusion, not soft tissue configuration, is likely to account for the difference in the surface nasal root protrusion between the two populations. These findings will contribute to a better understanding of the association between hard and soft tissue configurations and the diversification of human facial features at the individual and population levels.

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A comparative study of craniofacial measurements between Ryukyuan and mainland Japanese females using lateral cephalometric images

Cited by 2 publications

References 69 publications

Determination of cephalometric parameters, which usually do not change during surgical and orthodontic treatment depending on facial types according to Garson in Ukrainian young men and young women with orthognathic occlusion

Determination of cephalometric parameters, which usually do not change during surgical and orthodontic treatment depending on facial types according to Garson in Ukrainian young men and young women with orthognathic occlusion

Computed tomography examinations of the surface and internal morphologies of the upper face in Ryukyu Islanders and mainland Japanese population

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