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자가골 블럭 이식을 이용한 수평골 증강술시 이식골의 치유
오재권,최병준,이백수,Oh, Jae-Kwen,Choi, Byung-Jun,Lee, Baek-Soo 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.3
Purpose: The aim of the present study is to evaluate the long term bone healing after horizontal ridge augmentation using auto block bone graft for implant installation timing. Materials and Methods: Five Beagle dogs(which were 14 months old and weighted approximately 10kg). In surgery 1(extraction & bone defect), premolars(P2, P3,P4) were extracted and the buccal bone plate was removed to create a horizontally defected ridge. After three months healing, in surgery 2(ridge augmentation). Auto block bone grafts from the mandibular ramus were used in filling the bone defects were fixed with stabilizing screws. The following fluorochrome labels were given intravenously to the beagle dogs: oxytetracycline 1week after the surgery, alizarin red 4 weeks after the surgery, calcein blue 8 weeks after the surgery. The tissue samples were obtained from the sacrificed dogs of 1, 4, 8, 12, 16 weeks after the surgery. Non-decalcified sections were prepared by resin embedding and microsection to find thickness of $10{\mu}m$ for the histologic examination and analysis. Results: 1. We could achieve the successful reconstruction of the horizontal bone defect by auto block bone graft. The grafted bone block remained stable morohologically after 16 weeks of the surgery. 2. In the histologic view. We observed osteoid tissue from the sample $4^{th}$ week sample and active capillary reconstruction in the grafted bone from the $12^{th}$ week sample. Healing procedures of auto bone grafts were compared to that of the host bone. 3. Bone mineralization could be detected from the $8^{th}$ week sample. 4. Fluorochrome labeling showed active bony changes and formation at the interface of the host bone and the block graft mainly. Bony activation in the grafted bone could be seen from the $4^{th}$ week samples. Conclusions: Active bone formation and remodeling between the grafted bone and host bone can be seen through the revascularization. After the perfect adhesion to host bone, Timing of successful implant installation can be detected through the ideal ridge formation by horizontal ridge augmentation.
14-15세 한국인 안모의 실물사진계측분석에 의한 연구
오재권,김여갑 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.2
A PHOTOMETRIC STUDY OF MAXILLOFACIAL NORMALS IN 14∼15 YEAR-OLD KOREAN. The primary method of diagnosis in craniofacial deformity patient is used by gross inspection. The study for objective analysis and evaluation in Korean maxillofacial soft tissue portions is rare and our normals have been based on Caucasian such as American. But it is difficult to apply it to ours so we studied the frontal photometric measurements for maxillofacial Korean normals. The photograph were taken with the subject sitting in head position parallel with interpupillary plane to the floor. During taking pictures, facial analyser by Obwegeser in Martin was used for correct measurements. 54 male and 57 female ages 14 to 15 years were selected from a group of 111 healthy middle school students in Inchon. 1.The vertical measurements in glabella-subnasale, subnasale-stomion and stomion-menton in the male were higher than in the female subjects in 14∼15 years old Korean, so middle and lower third face were higher than those of female(p<0.05). 2.The horizontal measurements of female was higher than those of male in the rt. and It. eye width but smaller in nose width and lip width(p<0.05). 3.There was no significant difference in gender compared with soft cheek and mention angle measurements When our reports were compared with american white population, the vertical proportions in Korean normals were similar to american and the line measurements in middle facial length, nose width and intercanthal distance were higher than those of american. Key words : Maxillofacial korean normals, Frontal photometric measurements
Midfacial degloving approach을 이용한 양측성 상악골절제술의 치험례
오재권,류동목,이상철,김여갑,이백수 大韓顎顔面成形再建外科學會 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.6
Maxillary cancer accounts for only 0.3% of all cancers and tumors of the nose and paranasal sinuses are 80% of maxillary neoplasms. The complexes of midfacial anatomical landmarks make the extension of the maxillary cancer more easy. In 1826 since Lazar first made unilateral maxillectomy for the maxillary cancer, various developments were evoluated and in the surgical approach of these lesions most oral & maxillofacial surgeons have used the vestibular approach or Weber-Fergusson approach and also unilateral lesions are common but bilateral lesons are rare. In 1992 Sjovall introduced the bilateral maxillectomy and for the preventions of the facial scar, In 1927 Portmann and Retrouvey reported the sublabial approach and In 1979 Price reported the midfacial degloving approach and in 1981 Allen and Siegel used the term "Midfacial degloving approach". Unlike the previous used Weber-Fergusson approach and Caldwell-Luc method, midfacial degloving method can make the intraoral approach of midfacial structure exposure without facial incision and has populated gradually for the removal of tumors and facial plastic surgery. In this case, two male pt. with bilaterally extensive malignant neoplasm on maxillary sinus was treated with pre or post op. radiotherapy and then underwent the bilateral subtotal maxillectomy via midfacial degloving approach and relatively satisfactory results were obtained.
($14{\sim}15$세 한국인 안모의 실물사진계측분석에 의한 연구
오재권,김여갑,Oh, Jae-Kwon,Kim, Yeo-Gab 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.2
The primary method of diagnosis in craniofacial deformity patient is used by gross inspection. The study for objective analysis and evaluation in Korean maxillofacial soft tissue portions is rare and our normals have been based on Caucasian such as American. But it is difficult to apply it to ours so we studied the frontal photometric measurements for maxillofacial Korean normals. The photograph were taken with the subject sitting in head position parallel with interpupillary plane to the floor. During taking pictures, facial analyser by Obwegeser in Martin was used for correct measurements. 54 male and 57 female ages 14 to 15 years were selected from a group of 111 healthy middle school students in Inchon. 1. The vertical measurements in glabella-subnasale, subnasale-stomion and stomion-menton in the male were higher than in the female subjects in $14{\sim}15$ years old Korean, so middle and lower third face were higher than those of female(p<0.05). 2. The horizontal measurements of female was higher than those of male in the rt. and It. eye width but smaller in nose width and lip width(p<0.05). 3. There was no significant difference in gender compared with soft cheek and mention angle measurements When our reports were compared with american white population, the vertical proportions in Korean normals were similar to american and the line measurements in middle facial length, nose width and intercanthal distance were higher than those of american.
박정우(Jeong-Woo Park),이용길(Yong-Gil Lee),오재권(Jae-Kweon Oh),박지군(Ji-Kun Park),박채진(Chae-Jin Park),조승기(Seung-Ki Cho) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
본 논고에서는 현재 K-water 충주 수력발전소에서 운전 중인 NO.1 변압기에 대해 2010년 3월까지 총17회의 절연유 유중가스분석(Dissolved Gas Analysis, 이하 DGA라 함.)과 내부 정밀분해점검(3회)을 통해 대용량 유입변압기의 내부고장을 이해하고자 하며 유입변압기의 내부이상 현상에 따른 DGA 결과 분석과 향후 대응방안에 대해 기술하고자 한다.