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성장기 어린이에서 상악 중절치 조기 상실 후 치조골 소실
나혜진,송제선,이제호,최형준,김성오,손흥규,최병재 大韓小兒齒科學會 2012 大韓小兒齒科學會誌 Vol.39 No.1
어린이는 8-10세 경에 외상을 자주 받으며 구강 내에서는 상악 절치부가 호발하는 부위이다. 외상으로 인하여 상악 절치가 상실되면 어린이에게 합병증을 야기할 수 있으므로 가능한 한 상악 절치를 유지해야 하지만 조기 상실되는 경우가 있다. 상악 절치의 조기 상실로 인한 합병증으로는 심미적 문제나 치조골의 수직적 높이와 수평적 너비의 감소, 인접치의 경사, 악궁 장 경 감소 등이 있다. 그 중에서 치조골이 소실되면 보철적 수복 시에 기능성과 안정성, 심미적인 면에 영향을 준다. 이 증례는 외상으로 인하여 상악 중절치가 조기 상실된 9세 여아와 6세 남아에서 각각 5년 5개월, 3년 7개월 후의 치조골 소실 정도를 cone beam computed tomography와 진단 모형 상에서 관찰하였기에 보고하는 바이다. The anterior maxillary incisor is the most traumatized region in the mouth and trauma is frequent between the ages of 8-10. Traumatic loss of teeth, can lead to many complications in children. Thus, as possible to keep traumatic teeth, but if you need extractions There may be. Complications occur and early tooth loss is frequent. Complications of early loss of central incisors are esthetic compromise, loss of vertical and horizontal width, height, contour of alveolar bone, tilting of adjacent teeth, arch length loss. Alveolar bone loss may affect normal function and stability, and results in esthetic problem for future prosthesis restoration. The 9-year-old girl and 6-year-old boy got early loss of upper central incisor. The amount of alveolar bone resorption was measured using cone beam computed tomograph and cast analysis.
1980년대(1981-1990) 전·후반기 피부과 외래환자의 통계적 비교 관찰
은 철,강승구,권상진,정성재,조지형,권철욱,김영진,김재홍 한양대학교 의과대학 1997 한양의대 학술지 Vol.17 No.1
To study the prevalence of common dermatoses 37,638 and 30,286 new outpatients who visited dermatology clinic with Hanyang University Hospital from January 1981 to December 1985 and from January 1986 to December 1990, respectively. Among the 37,638 outpatients in the first 5 years, the total number of male patients were 18,107(48.1%) and female patients were 19,531 (51.9%). Among the 30286 outpatients in the last 5 years, the total number of male patients were 14,705 (48.6%) and female patients were 15,581 (51.4%). In the both periods, the most frequent age groups was 21-30 (27.3%,25.2% respectively). The 15 common dermatoses, bacterial infection, seborreic dermatitis, drug eruption, verruca, syphilis, psoriasis, herpes zoster, and hypopigmentary disorder, in order of frequency. In thelast 5years, dermatophytosis, contact dermatitis, urticaria, acne, other eczema, atopic dermatitis, seborrheic dermatitis, bacterial infection, drug eruption, verruca, gerpes zoster, psoriasis, hypopigmentary disorder, scabies and syphilis were the 15 common dermatoses, as frequency. In both periods, the dermatosis which showed annually increasing tendency was dermatophytosis and those of decreasing tendency was bacterial infection. In the both periods, dermatophytosis, urticaria, bacterial infection, seborrheic dermatitis, verruca, and hypopigmentary disorder occurred most frequently during the summer season, and the incidence of other ecxema, scabies, atopic dermatitis, and herpes zoster increased during the winter season.
WEAR MECHANISM IN CERAMICS DURING SLIDING
Cho, Seong-Jai ENGINEERING TRIBOLOGY RESEARCH INSTITUTE KYUNGPOOK 1998 INTERNATIONAL SYMPOSIUM ON HIGH PERFORMANCE OF TRI Vol.1998 No.-
Wear mechanism in alumina and silicon carbide ceramics during sliding have been investigated experimentally under paraffin oil lubrication. Wear tests were conducted using a ball-on-three-flat specimen configuration. The test geometry in this configuration is that a of rotating sphere on three flat specimens which are aligned with their surface normals in tetrahedral coordination relative to the rotation axis of the sphere.
Effects of the Loading Rate and Humidity in the Fracture Toughness Testing of Alumina
Cho, Seong-Jai,Kim, Jai-Chun,Yoon, Kyung-Jin,Chu, Min-Cheol,Lee, Yoon-Cheol,Quinn George,Lee, Hong-Lim The Korean Ceramic Society 2006 한국세라믹학회지 Vol.43 No.1
To test the fracture toughness of alumina; a Surface-Crack-in-Flexure (SCF) method, a Single-Edge-Precracked-Beam (SEPB) method and a Single-Edge-V-Notched-Beam (SEVNB) method were used at crosshead rates ranging from 0.005 mm/min to 2 mm/ min and relative humidity ranging from $15\%\;to\;80\%$. The results show that the fracture toughness tested by the SCF method increases with either an increasing loading rate or decreasing relative humidity; in contrast, the toughness by the SEPB method and the SEVNB method does not depend on the loading rate or the relative humidity. Theoretical analysis of the way slow crack growth affects the apparent fracture toughness indicates that the three testing methods have different effects with respect to the loading rate and the relative humidity; moreover, these differences are attributable to differences in the size of the cracks or notches.
열성 이영양성 수포성 표피박리증 환자에서 전신마취를 통한 치과치료
조성현(Seong-Hyeon Cho),송제선(Je-Seon Song),이효설(Hyo-Seol Lee),최형준(Hyung-Jun Choi),최병재(Byung-Jai Choi),김성오(Seong-Oh Kim),이제호(Jae-Ho Lee) Asia association of Disability and Oral health 2012 대한장애인치과학회지 Vol.8 No.2
본 증례는 열성 이영양성 수포성 표피박리증을 가진 2세 8개월 된 환자로 다발성 우식증 소견을 보여 전신마취하에 치료하였다. 1. 환자는 열성 이영양성 수포성 표피박리증으로 전신에 흉터가 있었으며 심한 빈혈 및 패혈증 증상이 있어 수혈 및 항생제 등으로 먼저 전신상태를 회복하였다. 2. 전신마취하에 모든 절치의 발치 및 구치 부위의 치수 치료와 기성금속관 수복을 시행하였다. Epidermolysis bullosa (EB) is an inherited skin disease characterized by blister formation of the skin following just minor trauma or spontaneously. The main classification of EB is based on the localization of the blistering. In epidermolysis bullosa simplex, the blister formation is intraepidermal; in epidermolysis bullosa junctionalis the blister formation in the epidermal-dermal junction; in the dystrophic forms of EB blister formation is intradermal. Oral manifestations of recessive dystrophic EB are characterized by rampant caries, crowding, microstomia, ankyloglossia, vestibular obliteration. Dental therapy may be well provided to patient with recessive dystrophic EB by using general anesthesia especially in case of poor cooperation. A two years old girl with recessive dystrophic EB visited our clinic for rampant caries. She was hospitalized for severe anemia and fever, and we provided dental therapy under general anesthesia. Extraction of incisors and stainless steel crown restoration of primary molars were performed.
Jae Yeong Cho,Dong-Hyuk Cho,Jong-Chan Youn,Darae Kim,Sang Min Park,Mi-Hyang Jung,Junho Hyun,Jimi Choi,Hyun-Jai Cho,Seong-Mi Park,Jin-Oh Choi,Wook-Jin Chung,Byung-Su Yoo,Seok-Min Kang 대한심장학회 2023 Korean Circulation Journal Vol.53 No.4
The Korean Society of Heart Failure guidelines aim to provide physicians with evidence-based recommendations for diagnosing and managing patients with heart failure (HF). In Korea, the prevalence of HF has been rapidly increasing in the last 10 years. HF has recently been classified into HF with reduced ejection fraction (EF), HF with mildly reduced EF, and HF with preserved EF (HFpEF). Moreover, the availability of newer therapeutic agents has led to an increased emphasis on the appropriate diagnosis of HFpEF. Accordingly, this part of the guidelines will mainly cover the definition, epidemiology, and diagnosis of HF.
Mesenchymal Hamartoma of the Liver inBeckwith-Wiedemann Syndrome - A Case Report -
Seong-Ho Yoo,박효진,Soo Yoen Cho,Chong Jai Kim 대한병리학회 2002 Journal of Pathology and Translational Medicine Vol.36 No.6
Beckwith-Wiedemann syndrome is a well-known overgrowth syndrome associated with the presence of a wide variety of anomalies and increased risk of cancers. Less frequently, benign neoplasms also develop. We report a female infant with Beckwith-Wiedemann syndrome who developed a mesenchymal hamartoma of the liver. The patient was born with macroglossia, ear lobe crease, and abdominal distension. Laboratory data showed hypoglycemia, and magnetic resonance image revealed both adrenal enlargement, enhancing mass of the pancreas, and multiple hepatic nodules. The histologic findings of the resected distal pancreas and both adrenals were those of Beckwith-Wiedemann syndrome. Microscopic findings of the liver biopsy specimens were compatible with mesenchymal hamartoma. Hamartoma of the urinary bladder, cardiac fibrous hamartoma, and mixed hamartoma of the liver have been documented previously in association with Beckwith-Wiedemann syndrome. However, to our knowledge, this is the first case report of hepatic mesenchymal hamartoma in Beckwith-Wiedemann syndrome. Because of the paucity of hamartomas in childhood, we should be cautious of other features of Beckwith-Wiedemann syndrome and the present case extends the spectrum of tumor formation in this syndrome. Beckwith-Wiedemann syndrome is a well-known overgrowth syndrome associated with the presence of a wide variety of anomalies and increased risk of cancers. Less frequently, benign neoplasms also develop. We report a female infant with Beckwith-Wiedemann syndrome who developed a mesenchymal hamartoma of the liver. The patient was born with macroglossia, ear lobe crease, and abdominal distension. Laboratory data showed hypoglycemia, and magnetic resonance image revealed both adrenal enlargement, enhancing mass of the pancreas, and multiple hepatic nodules. The histologic findings of the resected distal pancreas and both adrenals were those of Beckwith-Wiedemann syndrome. Microscopic findings of the liver biopsy specimens were compatible with mesenchymal hamartoma. Hamartoma of the urinary bladder, cardiac fibrous hamartoma, and mixed hamartoma of the liver have been documented previously in association with Beckwith-Wiedemann syndrome. However, to our knowledge, this is the first case report of hepatic mesenchymal hamartoma in Beckwith-Wiedemann syndrome. Because of the paucity of hamartomas in childhood, we should be cautious of other features of Beckwith-Wiedemann syndrome and the present case extends the spectrum of tumor formation in this syndrome.