Jin-Keun Dong
Wonkwang University
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Publication
Featured researches published by Jin-Keun Dong.
The Journal of Advanced Prosthodontics | 2014
Julian B. Woelfel; Takayoshi Igarashi; Jin-Keun Dong
PURPOSE The purpose of this study was to determine the average facial proportions and mandibular movement capacity of 316 first-year dental students who carefully recorded them on each other. MATERIALS AND METHODS This early exacting clinical experience was closely supervised by the authors in Columbus, Ohio during 1969-70. Five vertical and six horizontal distances were measured on each subjects face. An ala-tragus line and an occlusal line were drawn on the left side of the face to determine if these two lines were parallel. Measurements of mandibular movements involved maximum normal and hinge opening at the incisors and maximum amounts of right, left lateral and protrusive excursions of the mandible. RESULTS The ala width and distance between the tips of upper right and left canine cusps averaged (35.2 mm and 34.8 mm) but with very large individual variations. The distance between ala to occlusal plane lines was 29.9 mm at the tragus and 31.3 mm near the ala. The angle between orbitale and ala-tragus averaged 13.6 degrees. CONCLUSION The upper lip length was the most variable and the distance between the pupils was the most stable of the eleven facial measurements. The ala-tragus line and the occlusal plane lines were for all practical purposes parallel. Maximum jaw opening averaged 51.2 mm which was 3.0 times larger than maximal hinge opening of 17.2 mm. The maximum right plus left side jaw excursions (9.2 and 9.4 mm) totaled 18.6 mm, 2.3 times more than the 8.0 mm mean maximum forward protrusion.
Archive | 2012
Won-Chang Song; Sun-Kyung Kang; Jin-Keun Dong; Sung-Tae Jung
In this study, we propose an automated smile analysis system for self smile training. The proposed system detects face area from the input image with the AdaBoost algorithm. It then identifies facial features based on the face shape model generated by using ASM(Active Shape Model). Once facial features of the face are identified, the lip line and teeth area necessary for smile analysis are detected. An analysis of the lip line and individual teeth areas allows for an automated analysis of smiling degree of users, enabling users to check their smiling degree on a real time basis. The developed system exhibited an average error of 0.7 compared to previous smile analysis results released by dental clinics for smile training, and it is expected to be used directly by users for smile training.
The Journal of Korean Academy of Prosthodontics | 1996
Hyun-Seong Kim; Il-Pyung Kim; Sang-Chun Oh; Jin-Keun Dong
The Journal of Korean Academy of Prosthodontics | 2014
Dong-Wook Shin; Jin-Han Lee; Se-Yeon Kim; Jin-Keun Dong
The Journal of Korean Academy of Prosthodontics | 2008
Hee-Sun In; Jong-Il Park; Jong-In Choi; Hye-Won Cho; Jin-Keun Dong
Journal of Prosthetic Dentistry | 2015
Deuk-Won Jo; Jin-Keun Dong
The Journal of Korean Academy of Prosthodontics | 2014
Bo-Kuk Kim; Jae-Hyun Kim; Jin-Keun Dong
Quintessence Técnica | 2011
Jin-Keun Dong; Robert G. Rashid; Stephen F. Rosenstiel
The Journal of Korean Academy of Prosthodontics | 2009
Deuk-Won Jo; Jin-Keun Dong; Sang-Chun Oh; Yu-Lee Kim
Revista internacional de prótesis estomatológica | 2002
Hye-Won Cho; Jin-Keun Dong; Tai-Ho Jin; Sang-Chun Oh; Hae-Hyoung Lee; Jeong-Woo Lee