하악제3대구치의 존재양상과 하악우각부 골절과의 관계

김희광(Hee-Kwang Kim) 대한구강악안면외과학회 2004 대한구강악안면외과학회지 Vol.30 No.6

Objectives. The purpose of this study was to evaluate mandibular third molars as risk factors for angle fracture in a patient sample with fractured mandible. Materials and methods. The medical records and panoramic radiographs of 107 patients with mandibular fractures were examined. The presence and absence and degree of impaction of the lower third molar were assessed for each patient and related to the occurrence of fracture of the mandibular angle. Data were also collected for age, sex and mechanism of injury. Data were analyzed by a chisquare statistics and Student t test. Result. The incidence of mandibular angle fracture was found to be significantly greater when a lower third molar was present(p < 0.05) especially at class Ⅲ state.(p < 0.05)(by Pell & Gregory system) Of the 78 patients with a lower third molar, 46(58.97%) had angle fractures. Of the 29 without a lower third molar, 24(82.76%) had not angle fractures. Conclusion. The result of this study showed that the mandibular angle that have a lower third molar is more susceptible to fracture when exposed to an impact than an angle without an lower third molar.

한 대학병원 근무자의 신체 부담과 근골격계 증상이 직무 스트레스에 미치는 영향

김동현(Kim, Dong-Hyun),채유미(Chae, Yoo-Mi),김희광(Kim, Hee-Kwang) 한국산학기술학회 2014 한국산학기술학회논문지 Vol.15 No.11

본 연구는 일개 대학병원 근무자 679명을 대상으로 신체 부담과 근골격계 증상이 직무 스트레스에 미치는 영향을 파악하였다. 분석 결과 직무스트레스에 영향을 미치는 관련 요인으로는 여성, 저연령층, 미혼, 교대근무자, 8시간 이상 근무자, 근무 경력이 낮은 군이 유의한 변수로 선정되었다. 직무 스트레스 수준은 비흡연(p=0.000), 운동을 하지 않는다(p=0.022) 및 비음주(p=0.038)에서 높았고 통계적으로도 유의한 차이를 보였다. 또한 직무스트레스에 영향을 미치는 관련 변수로 정신적 피로, 근골격계 증상, 피로수준 및 결혼상태가 직무스트레스 위험을 증가시킬 수 있다. 결론적으로 육체적 작업부담과 직무스 트레스간의 쌍방향성 상승효과가 있음을 확인하였다. This study examined the effects of the symptoms of musculoskeletal disorder and the burden of the body on work stress in a university hospital workers. The research surveyed 679 subjects. The relevant factors affecting the job stress were found to be female, young people age group, unmarried, shift work, work more than 8 hours, short experience workers. The work stress was significantly higher in the non-smoker (p=0.000), regular exercise/sports(p=0.022) and non-drinking(p=0.038) groups. In addition, the mental fatigue, presence of musculoskeletal symptoms, fatigue level, and marital status increase the risk of the work stress. The results showed that the burden of the body and musculoskeletal disorders are related interactively with each other.

〈속보논문〉 가공 송전 철탑기초 설계 및 시공 방법 연구

張石漢(Suk-Han Jang),金熙光(Hee-Kwang Kim),李康現(Kang-Hyeon Lee),韓炅洙(Kyung-Soo Han),咸邦郁(Bang-Wook Ham),丁沂善(Ki-Sun Chung) 대한전기학회 2007 전기학회논문지 Vol.56 No.6

Electric transmission lines pass through a variety of area. Foundation supporting the conductors and tower are selected properly in accordance with external load, for example dead load, wind load, snow load, construction load etc, and topography and geology condition. Typical types of foundation are as follows: pad foundation for small load and hard soil or rock in mountainous area, pile foundation for medium or large load and soft soil in plain field area. This paper introduced cylindrical foundation design & construction for large load and mountainous area. This foundation failure mode against pulling-out show splitting failure by tensile force toward circumferential direction.

임상원저 : 골격성 3 급 부정교합 환자에서 하악골상행지 시상분할골절단술후 상순과 하순의 연조직 변화에 관한 연구

박관수(Kwan Soo Park),전인성(In Seong Jeon),윤규호(Kyu Ho Yoon),김희광(Hee Kwang Kim),정정권(Jeong Kwon Jeong),김태열(Tae Youl Kim) 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.6

Purpose: The prediction of profile change as a result of orthognathic surgery remains a problem during preoperative planning because of the difference relative movements of the hard and soft tissues. This study was performed to predict the changes of upper and lower lips after BSSRO with non-rigid fixation. Material and Methods: 15 patients with skeletal Class Ⅲ malocclusion treated by bilateral sagittal split ramus osteotomy (BSSRO) and mandibular setback were selected for analysis. Cephalometric data of presurgery and postsurgery 12 months were used. Wilcoxon signed rank test, calculation of Spearmans correlation rho and simple regression analysis were performed to predict the relations between hard tissue changes and soft tissue changes. Results: The horizontal change of hard tissue Pogonion and those of lower lips showed high correlation and the ratios were from 71% to 84%. The horizontal change of hard tissue Pogonion and those of chin showed high correlation and the ratios were from 90%to 92%. The horizontal change of hard tissue Pogonion and those of upper lips showed moderate correlation and the ratios were from 7% to 18%. Conclusion: This study suggests that the changes of lower lips are highly affected by the hard tissue change of mandible and those of upper lips are moderately affected. In comparison with other studies, no significant differences were found among the fixation methods.

안면에 발생한 신경섬유종의 치험례

김희광,윤규호,전인성,김태열,김기엽,김현우 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.1

Neurofibroma is benign neurogenic tumor originated from nerve tissue-Schwann cell, fibroblast, perineural cell. They have no sexual predirection and generally no symptom. Neurofibroma is classified to solitary type and multiple type and is rare in oral resion. They located in soft tissue of tongue, lip, palate and oral mucosa in form of sessile and pedunculated mass and are rare intraosseous region. In solitary type, complete excision is the choice of treatment due to their rare recurrence rate. In multiple type, the same is choice of treatment but bas some difficulty of plastic problem, bleeding

구개부에 발생한 다형성선종의 치험례

이창진,김태열,김효언,김희광,전인성,윤규호 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.2

Pleomorphic adenoma is the most common of all salivary gland tumors, constituting over 50 per cent of all cases of tumors, and approximately 90 per cent of all benign salivary gland tumors. Since the term mixed tumor' was introduced by Broca for its dual origin of epithelial and mesenchymal elements, the term plemorphic adenoma suggested by Willis characterizes closely the unusual histologic pattern of the lesion. The parotid gland is the most common site but it may occur in any of the salivary glands. It is somewhat more frequent in women and in the fourth to sixth decades, but they are also relatively common in young adult and have been known to occur in children. Treatment of choice is surgical excision. Adequate surgery with safe margin reduce its recurrence rate. We represent a case of pleomorphic adenoma with literature review in 65-year old male occured in the palate. The lesion was successfully treated by surgical excision.

골격성 Ⅲ급 부정교합 환자에서 하악골상행지 시상분할골절절단술후 상순과 하순의 연조직 변화에 관한 연구

박관수,김태열,김희광,정정권,윤규호,전인성 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.6

Purpose : The prediction of profile change as a result of orthognathic surgery remains a problem during preoperative planning because of the difference relative movements of the hard and soft tissues. This study was performed to predict the changes o( upper and lower lips after BSSRO with non-rigid fixation Material and Methods : 15 patients wish skeletal Class III malocclusion treated by bilateral sagittal split ramus osteotomy(BSSRO) and mandibular setback were selected for analysis. Cephalometric data of presurgery and postsurgery 12 months were used. Wilcoxon signed rank test, calculation of Spearmans correlation rho and simple regression analysis were performed to predict the relations between hard tissue changes and soft tissue changes. Results : The horizontal change of hard tissue Pogonion and those of lower lips showed high correlation and the ratios were from 71% to 84%. The horizontal change of hard tissue Pogonion and those of chin showed high correlation and the ratios were from 90% to 92%. The horizontal change of hard tissue Pogonion and those of upper lips showed moderate correlation and the ratios were from 7% to 18%. Conclusion : This study suggests that the changes of lower lips are highly affected by the hard tissue change of mandible and those of upper lips are moderately affected. In comparison with other studies, no significant differences were found among the fixation methods.