임플란트 환자의 유형 및 분포에 대한 연구

홍성재,백정원,김창성,최성호,이근우,채중규,김종관,조규성,Hong, Sung-Jae,Paik, Jeong-Won,Kim, Chang-Sung,Choi, Seong-Ho,Lee, Keun-Woo,Chai, Jung-Kiu,Kim, Chong-Kwan,Cho, Kyoo-Sung 대한치주과학회 2002 Journal of Periodontal & Implant Science Vol.32 No.3

It has been approximately 40 years since $Br{{\aa}}nemark$ first introduced osseo-integration for implants in the early 1960s. Unlike crown and bridge or denture treatment, implant treatment helps preserve existing bone and improve masticatory functions. Thus, the awareness of implant treatment has grown rapidly among dentists and patients alike in Korea, as it becomes a widely accepted treatment. The following results on patients type and implant distribution were compiled from 1814 implant cases of 640 patients treated at the periodontal dept. of Y University Hospital during 1992 to 2001. 1. There are no dissimilarities between men and women, with patients in their 40,50s accounting for 49% of patients and 56% of implant treatments; the largest share of patients and implant treatments. 2. Mn. posterior area accounted for 59% of implant treatments followed by Mx. posterior area(21%), Mx anterior area(l4%) and Mn anterior area 2%. 3. Partial edentulous patients treated by single crown and bridge-type prosthesis accounted for 98% and fully edentulous patient accounted for the remaining 2% 4. The major cause of tooth loss is periodontal disease, followed by dental caries, trauma and congenital missing. Compared to women, men are more likely to suffer from tooth loss due to periodontal disease. Also, older people are more likely to suffer from tooth loss due to periodontal disease rather than dental caries. 5. The distribution of bone quality for maxillae was 52% for type III, followed by 23% for type II, 20% for type IV and 0% for type I. As for mandible, the distribution was 52% for type II, followed by 37% for type III, 7% for type IV and 4% for type I. 6. The distribution of bone quantity for maxillae was 49% for type C, followed by 34% for type B, 14% for type D, 3% for type A, and 0% for type E. As for mandible, the distribution was 52% for type B, followed by 35% for type C, 6% for type D, 3% for type A and 0% for type E. 7. The majority of implants were those of 10-14mm in length (80%) and regular diameter in width (79%). The results provided us with basic data on patient type, implant distribution, bone condition, etc. We wish that our results coupled with other research data helps assist in the further study for better implant success/survival rates, etc.

소아 전두골에 발생한 랑게르한스세포 조직구증

홍성재,조상헌,어수락,Hong, Seong Jae,Cho, Sang Hun,Eo, Su Rak 대한두개안면성형외과학회 2013 Archives of Craniofacial Surgery Vol.14 No.1

Lateral eyebrow mass with primary skull lesion are rare in pediatric population. Although epidermoid cyst and dermoid cyst are the most commonly encountered skull lesions in pediatric population, Langerhans cell histiocytosis (LCH) is rarely reported. We report a case of LCH arising from the lateral eyebrow with osteolytic lesion involving the frontal bone. A 5-year-old boy was presented with a hard, fixed mass in his lateral eyebrow. Contrast magnetic resonance imaging revealed inhomogeneous enhancement of the mass with direct invasion of the frontal bone and adjacent dura mater. Under general anesthesia, linear incision at the lateral eyebrow region was made. Intraoperative evaluation revealed hard, fixed and well-defined soft tissue mass. The final extirpated mass was $2.5{\times}2.4cm$ in size, and was accompanied by a $1{\times}1cm$ sized defect on the frontal bone with intact dura mater. The surgical wound was closed primarily by a layer-by-layer fashion. Histologic examination was later performed for definite diagnosis. The histologic examination revealed abnormal proliferation of Langerhans cell with granuloma formation. Radionuclide bone scan and positron emission tomography was taken and revealed free of multi-organ involvement. At 3 months after surgery, natural looking contour at the lateral eyebrow region was observed with no tumor recurrence. Differential diagnosis of the hard and fixed mass at the lateral eyebrow region affecting the primary skull lesion from pediatric population includes epidermoid cyst, dermoid cyst and LCH. Generally, brief physical examination with plain X-ray view can be performed for clinical evaluation, but for a definite diagnosis, contrast MRI may be helpful.

기판의 왕복 운동을 이용한 인라인 식각세정장치 내 ITO 식각특성

홍성재,권상직,조의식,Hong, Sung-Jae,Kwon, Sang-Jik,Cho, Eou-Sik 한국전기전자재료학회 2008 전기전자재료학회논문지 Vol.21 No.8

An in-line wet etch/cleaning system was established for the research and development in wet etch process. The system was equipped with a reverse moving system for the reduction in the size of the in-line wet etch/cleaning system and it was possible for the glass substrate to be moved back and forth and alternated in a wet etch bath. For the comparison of the effect of the normal motion and that of the alternating motion on the in-line wet etch process, indium tin oxide(ITO) pattern was obtained through both wet etch process conditions. The results showed that the alternating motion is not inferior to the normal motion in etch rate and in etch uniformity. It is concluded that the alternating motion is possible to be applied to the in-line etch process.

대체서식지 조성을 위한 거머리말 이식 및 모니터링

홍성재,최창근,Hong, Seong Jae,Choi, Chang Geun 한국해양생명과학회 2018 한국해양생명과학회지 Vol.3 No.1

We investigated natural habitat of seagrass and created replacement habitat to monitor for restoration of the habitat which is expected to be damaged at Cheonseong harbor in Busan. Depth of water for natural seagrass habitat at Cheonseong harbor was 1.2~3.1 m and the water temperature was 7.4℃, salt concentration was 29.1 psu and pH was 8.05 in January, 2013. The density of seagrass was 167.1±16.4 shoots m^-2, the total length was 48.5±18.1 cm, the height of sheath was 9.1±2.8 cm and the width of leaf was 4.8±1.1 cm, respectively. We transplanted in December 2014 and monitored the habitat during 9 months after transplanted. In the beginning, the density of seagrass was decreased to 8.5 shoots patch^-1 in January and was increased to 19.0 shoots patch^-1 in April. The total height were 73.3±2.9~121.3±6.1 cm, the length of sheath were 9.6±0.6-21.0±1.2 cm, the width of leaf were 5.7±0.1~6.8±0.2 mm. It showed that all values were increased steadily until July and was decreased rapidly in August. Flowering shoot, which was not observed in the beginning of transplanting, started to be spotted in March and was continued to be seen during the monitoring period. We were able to observe seedling of germinated seagrass in seeds in the replacement habitat next year.

봄철 황사탐지를 위한 정지궤도위성 적외선 채널의 배경경계값 적용 가능성 연구

홍성재,김재환,하종성,Hong, S.J.,Kim, J.H.,Ha, J.S. 대한원격탐사학회 2010 大韓遠隔探査學會誌 Vol.26 No.4

최근 황사에 의한 피해가 증가하고 있는데, 정지궤도 위성에 탑재된 적외 채널은 주야간의 연속적인 관측을 가능하게 하여 황사 예보와 이로 인해 발생할 수 있는 피해를 미리 예방하는데 큰 도움을 준다. 그러나 적외 채널을 이용한 황사 측정 방법에는 많은 문제점들이 있다는 것이 알려져 있다. 이런 문제점들을 해결하기 위해 본 연구에서는 적외 채널의 배경경계값과 황사지수 개념을 도입하여 이를 정지궤도 위성에 적용한다면 황사 측정 결과를 크게 개선할 수 있음을 밝혀냈다. 본 연구는 이러한 개념을 정지궤도 위성인 MTSAT-1R에 적용하여 개선된 황사 측정 방법에 대해 연구하였다. There has been an increasing trend in damaging by the Asian dust in spring. The continuous monitoring of the dust event with IR channels in geostationary satellite is very useful for forecasting and preventing the event. However, the monitoring with the IR channels revealed various problems associated with sensitivity. To eliminate these problems, we introduced a new concept of monitoring by constructing the background threshold values (BTV) and aerosol index (AI). This paper is about to test the reliability of this concept by applying to geostationary satellite, MTSAT-1R.

도급계약에서의 계약이행보증금의 성질에 관한 판례의 검토

홍성재(Hong, Sung Jae) 전북대학교 법학연구소 2015 法學硏究 Vol.43 No.-

이 글에서는 다양한 목적을 가지고 행해지는 위약금 약정의 실태를 반영하기 위해서는 위약금 개념을 보다 유연하게 해석할 필요가 있는 것으로 보았다. 즉, 위약금에는 그 감액이 인정되는 손해배상액의 예정과 그것이 인정되지 않는 위약벌의 성질을 가진 것이 있음은 물론이고, 그 밖에 특수한 손해배상액의 예정이라든가 손해의 담보의 성질을 가진 위약금, 또는 손해배상액의 예정과 위약벌을 겸유하는 위약금의 유형이 있을 수 있다고 보았다. 물론 민법은 특별한 사정이 없는 한 위약금을 손해배상액의 예정으로 추정한다. 이러한 입장은 도급계약의 경우, 계약이행보증금에 관한 판례의 검토를 통해서 확인 되었다. 첫째, 귀속약정이 없는 계약이행보증금은 계약금의 성질을 가진다. 따라서 그 보증금만 지급한 상태에서는 민법 제565조에 따라 도급계약을 해제할 수 있다. 그리고 이 경우 계약이행보증금은 위약금으로 하기로 하는 특약이 없는 한 손해담보 내지 손해보증금의 성질을 겸유할 수 있다. 이 경우 도급인은 손해의 발생과 범위를 입증하여야 비로소 손해배상을 받을 수 있다. 둘째, 도급계약에서 그에 관한 귀속약정만 있는 계약이행보증금은 손해배상액의 예정의 성질을 가진다. 판례는 도급계약에서 계약이행보증금과 아울러 지체상금의 약정을 한 경우에도 그 보증금은 손해배상액의 예정의 성질을 가진 것으로 보고 있다. 이 경우 도급인은 초과손해의 배상을 받을 수는 없고, 오히려 법원은 계약이행보증금이 부당히 과다한 경우에는 그 보증금을 감액할 수 있다. 셋째, 계약이행보증금이 계약의 이행을 압박하고 위약하였을 때에는 사적인 제재를 가하는 것을 목적으로 교부된 경우에는 그것은 위약벌의 성질을 가진다. 즉, 도급계약에서 계약이행보증금의 귀속약정 외에 별도로 실손해 전부에 대한 배상을 인정하는 경우에 그렇다. 이 경우 법원은 계약이행보증금을 감액할 수 없고, 오히려 도급인은 실 손해 전부를 별도로 청구할 수 있다. 넷째, 도급계약에서 계약이행보증금의 귀속 외에 초과손해의 배상을 청구할 수 있는 것으로 정한 경우에, 그 계약이행보증금은 특수한 손해배상액의 예정(내지 손해담보)의 성질을 가질 수 있다. 이 경우 도급인은 계약이행보증금의 귀속 외에 초과손해를 입증하여 그 배상을 청구를 할 수 있다. 다섯째, 계약이행보증금은 손해배상액의 예정의 성질과 위약벌의 성질을 겸유하는 경우도 있다. 이 경우 계약이행보증금은 손해배상 기능을 가지는 손해배상액의 예정의 부분과 계약불이행에 대한 제재의 기능을 가진 위약벌의 부분으로 구분된다. In most cases, the agreement of cancellation charge is performed to compel the performance of contract, to simplify compensation for damage, or to lynch for breach of contract. In this thesis, the concept of cancellation charge is interpreted with more pliability to reflect the actual condition of contract. It means that cancelation charge can be admitted as not only a kind of liquidated damages with accepted reduction or penalty for breach of contract, but also a kind of security deposits, security damages, or both. Sure, it is presumed that a cancellation charge is a liquidated damages by article 398(4) of korean civil law, so a cancellation charge is a liquidated damages unless a specific agreement has been made between the parties. This view on cancellation charge is applied in the Supreme Court about the contract deposit in case of contract for work. First, without agreement reverted, the contract deposit has nature of down payment. In the situation where the only deposit is provided, the contract for work can be cancelled according to article 565 of korean civil law. Second, the contract deposit is considered as security deposits or security damages without specific agreement that contract deposit is regarded as cancellation charge. In this case, the orderer has responsibility to examine occurrence and range of damage to get security damage from contractor. Third, the contract deposit only with agreement reverted in contract work is admitted as liquidated damages. Also, with agreement of delay damage and contract deposit in contract work, the contract deposit has been considered as liquidated damages in the precedents. In this case, the orderer could not take fixed excess damages from the contractor, and the deposit can be reduced by courts when it is unfairly excessive. Forth, the contract deposit has nature of penalty for non-performance of contract when it is used to pressure performance of contract and to lynch the contractor in breach of contract. This case occurs when compensation of actual damage is admitted other than agreement reverted of contract deposit. On this occasion, Courts cannot reduced the contract deposit and the orderer can claim indemnification of actual damage separately. Fifth, the contract deposit is considered as specific liquidated damages or security damages with agreement that compensation of fixed excessive damages would be demanded besides reversion of contract deposit in contract work. The orderer can charge the contractor the compensation other than reversion of contract deposit by proving fixed excess damages. Sixth, the contract deposit has nature of both liquidated damages and penalty for breach of contract. In this case, the contract deposit is divided between liquidated damages for compensation of damages and penalty for breach of contract to restrain defaults on contract.

더블 펄스 시험 시 발생하는 SiCFET 스위칭 과도상태 분석에 관한 연구

홍성재(Seongjae Hong),한준서(JunSeo Han),고아진(Ajin Go),이근호(Geunho Lee) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11

간 및 담도계질환에서 혈청 Gamma-Glutamyl-Transpeptidase(GGTP)의 진단적 유용성

홍성재(Sung Jae Hong),박천규(Chun Kyu Park) 대한외과학회 1985 Annals of Surgical Treatment and Research Vol.28 No.4

유착성 장폐색증에 관한 임상적 고찰

홍성재(Sung Jae Hong),박천규(Cheon Kyu Park) 대한외과학회 1983 Annals of Surgical Treatment and Research Vol.25 No.5

담석증에 대한 임상적 고찰

홍성재(Sung Jae Hong),최영효(Yong Hyo Choi),박천규(Chun Kyu Park),유대규(Dae Kyo Yoo) 대한외과학회 1982 Annals of Surgical Treatment and Research(ASRT) Vol.24 No.11