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JYMS : Journal of Yeungnam Medical Science

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Chang Kon Lee 3 Articles
A case report of hemifacial microsomia.
Chang Kon Lee, Myung Jin Lee, Jong Sup Kim, Jin Ho Park, Byung Rho Chin, Hee Kyung Lee
Yeungnam Univ J Med. 1993;10(1):218-225.   Published online June 30, 1993
DOI: https://doi.org/10.12701/yujm.1993.10.1.218
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This is a case report and review of literature that deals with hemifacial microsomia corrected by costochondral graft, Lefort I osteotomy and bilateral intraoral sagittal split ramus osteotomy. Patient, 23 years old female, had visited to treat the esthetic problem due to a deviation of jaw. On the basis of clinical and radiographic examinations, she was diagnosed as hemifacial microsomia. First, costochondral graft was performed to bridge the defect between glenoid fossa and body of mandible. After 11 months,. Patient was performed a Lefort I osteotomy and bilateral intraoral sagittal split ramus osteotomy to create a symmetric jaw. Patient was satiesfied with final esthetics and there have been no evidence of infection ill now.
The comparison of influence of difficulties in nasal breathing on dentition between different facial types.
Myeong Jin Lee, Chang Kon Lee, Sup Jong Kim, Jin Ho Park, Byung Rho Chin, Hee Kyung Lee
Yeungnam Univ J Med. 1993;10(1):37-47.   Published online June 30, 1993
DOI: https://doi.org/10.12701/yujm.1993.10.1.37
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It is. commonly assumed that nasorespiratory function can exert a dramatic effect upon the development of the dentofacial complex. Specially, it has been stated that chronic nasal obstruction leads to mouth breathing, which causes altered tongue and mandibular positions. If this occurs during a period of active growth, :the .outcome is development of the "adenoid facies". Such patients characteristically: manifest a vertically long lower third facial height, narrow alar bases, lip incompetence, a long and narrow maxillary arch and a greater than normal mandibular plane angle. But several authors have reported that so-called adenoid facies is not always associated with adenoids and mouth breathing, and that a particular type of dentition is not alwarys found in mouth breathers with or without adenoids. Some authors have believed adenoids lead to mouth breathing in cases with particular facial characteristics and types of dentition. We assumed that the ability to adapt to individual's neuromuscular complex is various. So, we compared the difference of influence of mouth breathing between childrens who have different facial types. This study included 60 patients and they were divided into three groups by Rickett's facial type. Their dentition and tongue position were compared. The results are as follows. 1. There is a significant difference in arch width of upper molars between different facial types. Especially dolichofacial type patients have narrowest arch width. 2. There is a significant difference in tongue position between different facial types. Especially dolichofacial type patients have lowest positioned tongue.
A case of orthognatic surgery in congenital alveolar-palatal cleft patient.
Jae Hyun Park, Myung Jin Lee, Chang Kon Lee, Jong Sub Kim, Byung Rho Chin, Hee Kyung Lee
Yeungnam Univ J Med. 1992;9(1):189-196.   Published online June 30, 1992
DOI: https://doi.org/10.12701/yujm.1992.9.1.189
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Pre-surgical and post-surgical change in adult clef lip and palate patient following Le Fort I advancement osteotomy combined with bone graft was evaluated clinically and cephalometically. We obtained a successful function and esthetic improvement. The bone graft of alveolo-palatal clefts provides a stable bone support to the adjacent teeth of the cleft area, and well union of adjacent bone tissue, the closure of oronasal fistula and improvement of speech problem. Le Fort I osteotomy following the ostectomy of nasal septum for advancement of the maxilla was obtained relative improvement of esthetics and functional occlusion. 1. The orthodontic correction was required before and after surgery. 2. In this case, there was a limited range of anterior advancement of the Premaxillary-segment due to the scar tissue. 3. After 8 months of operation, we could show the new bone deposition on the cleft sites in dental radiograph and then the prosthetic treatment to the missing teeth was done.

JYMS : Journal of Yeungnam Medical Science