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Advisory Committee Chair

Chung How Kau

Advisory Committee Members

Kyunga Cheon

Amjad Javed

Nada Souccar

Christos Vlachos

Document Type

Thesis

Date of Award

2015

Degree Name by School

Master of Science (MS) School of Dentistry

Abstract

The purpose of this study is to compare the computer generated facial averages of Korean adults with Chinese and Houstonian Caucasian faces using a three-dimensional surface imaging system. Materials and Methods: Three-dimensional images of Korean adults (Seoul, Korea) with Class I malocclusion were captured using the 3dMDTMface, which combines structured light and stereo-photogrammetry techniques. The images of 138 Koreans were processed to generate average male and female facial shells using Rapidform 2006 Plus Pack 2 software. The average Korean facial shells were superimposed and compared to the average shells of Chinese adults (Xi’an, China) and Caucasian adults (Houston, Texas) from previous studies. Results: The average Korean male and female faces were wider with prominent malar and zygomatic areas when compared with the Caucasian average faces. The average Caucasian male and female faces showed more protrusion in the glabella, nasion, rhinion, and the soft-tissue pogonion than the average Korean faces. The average Korean male face was retrusive at the masseteric region while having more prominent lips, nasal tip, and supraglabella than the Chinese counterpart. The average Korean female face was narrower than the average Chinese female face, but there was more protrusion in the peri-orbital, nasal tip, and malar region seen in the Korean female face. Conclusions: Although the average faces of Chinese and Korean populations in this study showed remarkable similarities, there were distinct differences seen in the facial morphology of the two Asian groups. Three-dimensional imaging can be effectively used to establish population facial norms as well as quantifying the variations seen between different ethnicities.

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