생분해성 바이오 폴리머의 생산

이진하 江原大學校 農科大學 農業科學硏究所 1997 강원 농업생명환경연구 Vol.8 No.-

신바람 나는 십대-밤하늘의 별이 되고 싶다면

이진하 우리신학연구소 2001 갈라진 시대의 기쁜소식 Vol.- No.476

유리피판을 이용한 하지재건술

오재욱,김동일,백세민,선욱,백롱민,정성훈,이진하 大韓成形外科學會 1993 Archives of Plastic Surgery Vol.20 No.5

The lower extremity is an important part of the body responsible for weight bearing. Extensive soft tissue injuries of lower extremity had been reconstructed by skin graft, local flap, and distant flap, but, recently, free flap transfer technique is provided in lower extremity reconstruction according to development of microvascular surgery. We have done 46 free flap transfers using micorvascular anastomosis in extensive soft tissue injuries below knee joint, from Jan. 1989 to Jan. 1993. We have done 8 kinds of free flap transfers. The most common extensive soft tissue injury is heel area, 12 cases, anterior tibial, and foot dorsum, in turn. Most frequent free flap transfer was latissimus dorsi free flap transfer, 17 cases, gracilis, superficial temporalis, and scapular free flap were used in turn, The overall success rate was 95%. According to our 46 free flap transfer experiences of lower extremity reconstruction, especially below knee joint, we obtained the adequate types of free flap transfer for extensive softtissue injury. #1. When we recontructed lower extremity soft tissue below knee joint, if the extent of injury was wide, latissimus doris flap was suitable free flap which can be generally used. #2. Latissimus dorsi flap or gracilis flap was suitable free flap for anterior tibia&ankle joint. #3. To consider the thickness of flap, tensor fascia flap was suitable free flap for using for foot dorsum. #4. To consider the thichkness&the staying-power, if the extent of injury is wide, latissimus dorsi flap which was covered by partial thickness skin graft was suitable, but if the extent of injury was small, temporalis fascia flap was suitable for using for foot plantar surface&heel. Adequate free flap transfer provides reliable method for dealing with difficult reconstructive problem in extensive soft tissue injury of lower extremity.

신바람 나는 십대-해바라기 그리스도인이 되자

이진하 우리신학연구소 2001 갈라진 시대의 기쁜소식 Vol.- No.475

Dipyridamole과 Heparin 투여가 백서 피부피판의 생존에 미치는 영향

이진하,김진수 慶北大學校 齒科大學 1991 慶北齒大論文集 Vol.8 No.2

The effects of heparin and dipyridamole on the survival of random pattern flaps were evaluated in this study, using 40 Spraque-Dowley rats as experimental animals. The rats were divided into four groups, one is control and other three are experimental groups. Cephalic based random flaps were designed on the back of the all experimental animals. Then, for the experimental group I heparin(100units/kg) was injected, and for the experimental group Ⅲ heparin(100units/kg) and dipyridamole (0.3㎎/kg) were injected. For the control group saline was injected only. The survival ratio of the total flap was calculated by measuring the size of the survived flaps. The results were as follows: 1. The mean survival ratio of the flap was 39.7±12.1% in control. 55.9±11.6% in group Ⅰ, 60±12.0% in group Ⅱ, 83.4±13.5% in group Ⅲ. 2. Survival ratio of the flaps were increased in the group Ⅰ, Ⅱ, Ⅲ when compared with the control group. 3. The highest survival ratio was observed in the group Ⅲ. These results would suggest that heparin and dipyridamole have the synergistic effect of increasing survival ratio of the flaps.

Factors Affecting Dental Utilization and Dental Expenses in the Economically Active Population: Based on the 2010∼2014 Korea Health Panel Data

이진하,Eunsuk Ahn 한국치위생과학회 2019 치위생과학회지 Vol.19 No.1

Background: The health of the economically active population contributes to increased corporate productivity by reducing the productivity loss caused by disease and increasing job efficiency, which in turn is a national benefit. Since the economically active population is a concept encompassing workers and a source of economic development for a country, that population’s health should be treated with importance not only from a personal standpoint but also at a national level.Methods: In this study, data of 11,007 adults aged 20 years and older who participate in economic activities were analyzed in the five-year Korea Health Panel Study from 2010 to 2014 including the number of dental visits and dental medical expenses. Results: Factors related to “gender,” “education level,” “age,” “duty category,” “income level,” “employment type,” “national health insurance,” and “chronic disease status” of the economically active population are affected in relation to the number of visits and dental medical expenses. The number of dental visits increased with higher education levels (p<0.001), and the number of visits to the dentist increased with older age (p<0.001). Dental medical expenses were 91,806 Korean won (KRW) more for “white-collar workers” than for “blue-collar workers” (p<0.03), and 127,674 KRW more for “regular workers” than for “atypical workers” (p<0.02).Conclusion: When it is necessary to improve policies to enhance the efficiency of the distribution of health and medical resources in the overall balance of the dental health sector, we should try to identify various factors of oral health disorder due to income inequality among the classes according to the country’s employment type in order to find ways to reduce the health gap among the social classes.

DNA Breaking Action of Guanine Analogs Modified by Triose Reductone

이진하,Lee, Jin-Ha 생화학분자생물학회 1983 한국생화학회지 Vol.16 No.3

Triose reductone으로 수식된 guanine 유도체의 $\lambda$ 및 calf thymus DNA에 대한 절단작용을 agarose electrophoresis로 검토하였다. Tricylcic type인 $N^2$-(2-hydroxypropenylidene) guanin과 open type인 $N^2$-(3-oxo-2-hydroxypropenyl) guanine은 $CuSO_4$ 존재하에서 DNA 절단작용을 가지고 있으며 후자가 더 강한 활성을 가지고 있다. 또한, 그 guanine 유도체들의 DNA에 대한 절단작용은 triose reductone 보다 약한 활성을 나타냈다. Double strands breakage of guanine analogs modified by triose reductone on $\lambda$ and calf thymus DNA was investigated by using agarose slab gel electrophoresis, $N^2$-(2-hydroxypropenylidene) guanine and $N^2$-(3-oxo-2-hydroxypropenyl) guanine, possessed, the DNA breaking activity in the presence of $CuSO_4$, and the latter was more active than the tricyclic type analog. The DNA breakability of the analogs was weaker than that of triose reductone.

상악 전돌증 환자의 치험례

이진하,김진수,김성국 慶北大學校 齒科大學 1990 慶北齒大論文集 Vol.7 No.2

This is a case report of both superior(5mm) & posterior (7mm) repositioning of maxilla. This patient, 25-year old female, was admitted to our Dept. of Oral & Maxillofacial Surgery with chief complaint of lip incompetence & maxillary prognathism after orthodontic treatment. In this case, we performed Le fort Ⅰ osteotomy and ostectomy of maxillary tuberosity region including the perpendicular plate of the palatine bone. This repositioned maxilla is fixed with miniplate and wedge-shaped corticocancellous bone blocks are grafted between the margins of the upper & lower segments. As a result, we achieved improving appearance & lip incompetence.

갈바닉 산소센서를 이용한 불소계 고분자막의 산소투과도 및 그의 온도변화 특성 연구

이진하 동남보건대학 2004 論文集-東南保健大學 Vol.22 No.2

The oxygen permeation characteristics of FEP and PTFE membranes were studied against various thicknesses and temperatures.

안면 비대칭 환자에 있어서 관골 확대술

김동일,최준,백세민,백롱민,오재욱,선욱,이진하 大韓成形外科學會 1993 Archives of Plastic Surgery Vol.20 No.5

A new osteotomy technique has been used to correct the hypoplasia of the malar complex and the lateral orbital rim, which are commonly seen in patients with hemifacial microsomia and postradiation hypoplasia. Through a upper vestibular buccal incision, the zygomatic body and the lateral orbital rim are dissected subperiosteally with positive identification of the infraorbital nerve. A straight osteotomy is performed from the notch on inferior border of the lateral maxilla to the notch on the lateral orbital rim just lateral to the frontozygomatic suture using a reciprocating saw and the osteotomized lateral orbital zygomatic complex is pivoted laterally to achieve symmetric facial contour. Bone grafts or hydroxyapatite blocks are then inserted into the bone gap and the rigid fixation by a miniplate and screws is done. When the additional anterior projection of the malar area is necessary, onlay bone graft, usually cranial bone, is employed to improve the facial contour. From August, 1988 to February, 1993, we used this technique in 16 patients with hemifacial microsomia,, 2 patients with postradiation hypoplasia of malar complex, 2 patients with posttraumatic facial asymmetry and 1 patient with congenital facial cleft. Patient's satisfaction has been excellent and there has been no significant complication. Follow-up of more than 4 years showed no relapse and no evidence of the bony resorption.