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엇갈린 교합 환자의 임플란트 지지 고정성 보철물과 Kennedy class IV 가철성 국소의치를 이용한 수복 증례
강석형(Seok-Hyung Kang),한중석(Jung-Suk Han),김성훈(Sung-Hun Kim),윤형인(Hyung-In Yoon),여인성(In-Sung Yeo) 대한치과의사협회 2017 대한치과의사협회지 Vol.55 No.12
The term, ‘crossed occlusion’ implies clinical situation in which the residual teeth in one arch have no contact with those in the antagonistic arch, resulting in the collapse of occlusal vertical dimension. The treatment goal of this pathologic condition is restoration of the collapsed vertical dimension and stabilization of abnormal mandibular position. Previously, konus removable prostheses or tooth supported overdentures were suggested to solve crossed occlusion. Nowadays, dental implants have been used for definitive support to solve this problem. In this case report, a 65 years old female patient had a crossed occlusion, in which the maxillary posterior residual teeth and mandibular anterior residual teeth cross. Interim removable and fixed dental prostheses were used to confirm the proper vertical and horizontal jaw relation. After that, the mandibular posterior edentulous region was restored with implant-supported fixed dental prostheses. Computer tomography guided implant surgery was performed according to the concept of the restoration-driven implant placement. The maxillary anterior edentulous region was restored with Kennedy class IV removable prosthesis, considering the patient’s economic status. The patient’s jaw position and prostheses have been well maintained at the follow-up after 6 months of definitive restoration. The antero-posterior crossed occlusion problems appeared to be effectively solved with the combination of removable in one arch and implant-supported fixed prostheses in the other.
강석형 ( Suk Hyung Kang ),여상준 ( Sang Jun Yeo ),박승원 ( Seung Won Park ),황성남 ( Sung Nam Hwang ),민병국 ( Byung Kook Min ) 대한뇌종양학회 2003 대한뇌종양학회지 Vol.2 No.2
Intracranial germ cell tumors are rare lesions that account for 0.3 to 3.4% of all intracranial tumors. Although pure forms are rare, intracranial germ cell tumors are classified into five types:germinomas, teratomas, embryonal carcinomas, endodermal sinus tumors and choriocarcinomas. Teratomas are embryonal neoplasms composed of tissues that are derived from three germinal layers, the endoderm, mesoderm, and ectoderm. They may be solid or cystic and are classified histologically as mature, immature, and malignant. Intracranial teratomas have a predilection for the supratentorial and midline sites, especially pineal area. These are arise commonly in the neonatal period. Advances in neuroradiology and microsurgical techniques now make early diagnosis and successful treatment in many of these patients. We present a rare case of malignant teratoma in suprasellar region of a young boy. A complete excision of the tumor was achieved by pterional approach. Histological diagnosis of the tumor was teratoma with malignant components. The management, pathologic feature and clinical course of this unusual malignancy are discussed with a review of the literatures.
연구논문 : RO 농축수내 고농도 염분이 생물학적 폐수처리공정내 미생물 순응/배양에 미치는 영향평가
김연권 ( Youn Kwon Kim ),강석형 ( Suk Hyung Kang ) 한국환경영향평가학회 2012 환경영향평가 Vol.21 No.5
There are a lot of parameters affecting microbial acclimation/cultivation characteristics such as dynamic conditions, F/M ratio and substrate affinity. From the process control point of view, the effect of high salinity on the removal efficiencies of BOD and SS have been documented by few researchers. In this research, lab-scale CAS(Conventional Activated Sludge) process and modified A2O(Anaerobic/Anoxic/Oxic) process were operated and monitored to evaluate the characteristics of microbial acclimation and cultivation under high salinity wastewater during the period of three weeks. As a result of acute microbial activity test(6hr) at various Clconcentration, the appropriate Cl- concentration for microbial growth and acclimation ranged under 3,100 mg/ℓ. As a result of acclimation/cultivation test, the trend of COD removal efficiency reduced gradually as time elapsed. It is considered that NH4-N removal phenomenon of the conventional pollutants removal mechanisms gave little effect to the microbial acclimation/cultivation under high salinity wastewater.
지속적 외래 복막 투석을 위한 도관 삽입술 및 도관 관련 합병증에 대한 연구
곽정면(Jung Myun Kwak),정석인(Suk In Jung),민연기(Youn Ki Min),강석형(Seok Hyung Kang),조용걸(Yong Geul Joh),조민영(Min Young Cho),송태진(Tae Jin Song),이재복(Jae Bok Lee),배정원(Jeoung Won Bae),서성옥(Sung Ok Suh),김영철(Young Chul 대한외과학회 2002 Annals of Surgical Treatment and Research(ASRT) Vol.62 No.2
장기운영을 통한 친환경 수처리 기술의 하천수 수질개선 효율 평가
한소정 ( Han So Jeong ),김병군 ( Kim Byung Goon ),김동섭 ( Kim Dong Sup ),강석형 ( Kang Suk Hyung ),이선주 ( Lee Sun Ju ),유혜원 ( Yu Hye Weon ),조유진 ( Jo Yu Jin ),김홍석 ( Kim Hong Suck ) 한국수처리학회 2021 한국수처리학회지 Vol.29 No.3
Eco-friendly water treatment technology is emerging as a countermeasure to improve the quality of river water and source water. Among various eco-friendly water treatment technologies such as subsurface flow (SSF) and surface flow (SF) wetlands, vertical flow constructed wetland (VFCW) which is one of the SSF wetland is being used in the Netherlands as post-treatment for decentralized sewage treatment plants due to greater cold tolerance than general SF wetlands. In addition, SSF wetlands are less affected by seasonal water temperature fluctuations than SF wetlands, so they have the advantage of providing stable water treatment. In this study, an eco-friendly water treatment test-bed was installed for evaluation of applicability on river water (Yeongsan river water) at near Seung-chon weir and was operated for more than one year. A VFCW with 0.4 m/d showed excellent treatment efficiency of 83.8% turbidity 83.8%, SS 95.6%, BOD 93.6%, and T-P 73.7% and showed low treatment efficiency of 33.8% TOC and 31.0% T-N. At 1m/day, the treatment efficiency was similar to 0.4m/day. However, in the case of 2m/day or more, the treatment efficiency tended to decrease somewhat as the filtration speed increased. In the seasonal evaluation, there was little change in treatment efficiency by season in most of the water quality items except for T-N. As a result of organic material characterization, the proportion of non-degradable organic matter in both accounted for most of 74.4~81.4%, resulting in a low treatment efficiency of about 5.7%.