출입문 경계 시스템

송승한(Song Seung Han),박진호(Park Jin Ho),도락봉(Do Rack Bong),서민석(Seo Min Seok),김영돈(Kim Young Don),임충수(Lim Chung Su),이창석(Lee Chang Seok),박현주(Park Hyun Ju) 한국통신학회 2014 한국통신학회 학술대회논문집 Vol.2014 No.1

토끼의 전층 복벽 결손 재건에서 무세포진피 ($SureDerm^{TM}$)와 합성물질(PROCEED$^{(R)}$)에 대한 생체적합성 비교 연구

강낙헌,송승한,강대영,안재형,최다미,김진영,Kang, Nak-Heon,Song, Seung-Han,Kang, Dae-Young,Ahn, Jae-Hyoung,Choi, Da-Mi,Kim, Jin-Young 대한성형외과학회 2011 Archives of Plastic Surgery Vol.38 No.2

Purpose: Deficiencies of the abdominal wall can be the a result of infection, surgery, trauma, or primary herniation. For abdominal wall reconstruction, synthetic materials have been shown to provide a better long-term success rate than primary fascial repair. But, synthetic materials cannot elicit angiogenesis or produce growth factor and are therefore plagued by an inability to clear infection. As a result of the inherent drawbacks of synthetic, significant effort has been spent on the identification of new bioprosthetic materials. The aim of our study is to evaluate the effectiveness of a synthetic material (PROCEED$^{(R)}$) and an ADM ($SureDerm^{TM}$) to repair abdominal wall defects in a rabbit models. Methods: We measured the tensile strength of the $SureDerm^{TM}$ and PROCEED$^{(R)}$ by a Tension meter (Instron 4482). 16 Rabbit models were assigned to this study for abdominal wall reconstruction. Abdominal defect of 8 rabbits were reconstructed by PROCEED$^{(R)}$ and the rest were reconstructed by $SureDerm^{TM}$. We assessed gross and histologic examinations for the reconstructed abdominal wall. Results: The tensile strength of $SureDerm^{TM}$ and Gore Tex$^{(R)}$ is $14.64{\pm}0.51Mpa$, $8.54{\pm}0.45Mpa$. PROCEED$^{(R)}$ was estimated above the limits of measurement. Inflammatory reaction of PROCEED$^{(R)}$ persisted for 32weeks, but $SureDerm^{TM}$ decreased after 16weeks. Vascular ingrowth into the $SureDerm^{TM}$ was seen after 32 weeks. The basement membrane of $SureDerm^{TM}$ changed into a form of pseudoperitoneum. In PROCEED$^{(R)}$, it seemed like pseudoepithelial lining was made from the fibrosis around the mesh. Conclusion: In our study, the $SureDerm^{TM}$ not only have less inflammatory reaction and presented more angiogenesis than the PROCEED$^{(R)}$, but also have pseudoperitoneum formation. It is expected that $SureDerm^{TM}$ is useful for abdominal wall reconstruction. However, a long-term study of its usage consequences are thought to be needed.

정복 시기가 지난 안면골 골절의 수술적 교정

이규섭,박재범,송승한,오상하,강낙헌,Lee, Kyu-Seop,Park, Jae Beom,Song, Seung Han,Oh, Sang Ha,Kang, Nak Heon 대한두개안면성형외과학회 2013 Archives of Craniofacial Surgery Vol.14 No.2

Except for special situations, it is generally agreed that best results in the treatment of facial fractures is expected if reduction is done within the first 2 or 3 weeks after injury. We reduced facial bone fractures at 4 to 7 weeks after trauma. A 44-year-old female patient underwent open reduction for her right zygomaticomaxillary complex fracture at 7 weeks after injury. A 59-year-old female patient underwent surgery for the right mandible body and left parasymphysis fractures at 4 weeks after injury. Using traditional approaches, granulation tissue and callus were removed from the fracture sites, and malunited fracture lines were separated by a small osteotome. We reduced the displaced fractured zygoma and mandible to their normal anatomical positions and fixed them using titanium plates. No complications such as asymmetry, malunion, malocclusion, or trismus were seen. Unfavorable asymmetric facial contours were corrected, and we obtained good occlusion with favorable bony alignment. The functional and aesthetic outcomes were satisfactory. Through removal the callus and limited osteotomy, a successful approach to the previously fractured line was possible, and an exact correction with symmetry was obtained. This method can be a good option for obtaining good mobility and clinical results in treating delayed facial bone fractures.

가토 두개골에서 β-TCP와 자가골 이식에 관한 실험적 연구

이성훈(Sung-Hoon Lee),송승일(Seung-Il Song),한지영(Ji-Young Han),황경균(Kyung-Gyun Hwang),백승삼(Sung-Sam Paik),심광섭(Kwang-Sup Shim) 대한구강악안면외과학회 2004 대한구강악안면외과학회지 Vol.30 No.4

Pure-phase beta-tricalcium phosphate(β-TCP) proved to be a bone regeneration material, providing the patient with vital bone at the defect site in a reasonable time, making a second surgical procedure for bone harvesting unnecessary. This study compares bone healing and BMP 2/4 expression in cranial defects in rabbits grafted with autogenous bone and β-TCP. Thirty New Zealand White rabbits was divided into 3 group of 10 animals each. Bilateral calvarial defects were made in the parietal bones of each animal. β-TCP placed in one defect and the other defects was filled with autogenous bone. The animal were sacrificed at 4, 8 and 12 weeks. Immunohistochemical analysis was used to investigate the expression of BMP 2/4. 1. The new bone formation around autogenous bone from 4 weeks and β-TCP from 8 weeks. 2. In autogenous bone graft, BMP 2/4 expression was decreased from 4 to 12 weeks. 3. In β-TCP graft, BMP 4 expression was increased from 8 to 12 weeks. But, BMP 2 was observed from 12 weeks. This study showed that bone healing, regeneration and, BMP 2/4 expression are delayed in grafted β-TCP than autogenous bone

상악결절과 다공성 골 미네랄의 복합이식을 통한 상악동 골이식술

한기덕(Ki-Deok Han),정일혁(Il-Hyuk Chung),이은경(Eun-Kyung Lee),서제덕(Je-Duck Suh),송승일(Seung-Il Song) 대한구강악안면외과학회 2007 대한구강악안면외과학회지 Vol.33 No.4

The aim of this study was to evaluate implant stability placed in the maxillary sinus which was augmented with bovine bone mineral (Bio-Oss) mixed with autogenous bone from the maxillary tuberosity. Maxillary sinus floor augmentation with the mixture of bovine bone mineral and autogenous maxillary tuberosity bone was performed in 30 maxillary sinuses, and 68 implants were placed at the time of sinus graft. After 6 months of implant placement abutments were connected and implant stability quotient (ISQ) was measured by radio frequency analysis (RFA). In addition, bone level changes was evaluated by taking periapical radiograph. During surgical procedures, no complication was observed, and all patients healed uneventfully. At 6 months the implant showed stable ISQ values. The marginal bone level changes around the fixtures was stably maintained through out the follow up period. This study confirmed that maxillary sinus floor augmentation with mixture of bovine bone mineral and maxillary tuberosity bone could be reliable for bone regeneration in subantral space.

코골이 및 폐쇄성 수면 무호흡증의 두부 규격 방사선 계측학적 기여 인자

서은우,이호경,한민우,서미현,김현준,송승일,Seo, Eun-Woo,Lee, Ho-Kyung,Han, Min-Woo,Seo, Mi-Hyun,Kim, Hyun-Jun,Song, Seung-Il 대한악안면성형재건외과학회 2013 Maxillofacial Plastic Reconstructive Surgery Vol.35 No.3

Purpose: This study was intended to perform a cephalometric comparison between the patients with and without obstructive sleep apnea (OSA). The factors influencing the OSA in the lateral cephalogram were also investigated. Methods: Fifty patients who had visited the Sleep Disorder Clinic at the Ajou University Hospital and evaluated with the polysomnograph (PSG) and cephalogram, were included in the study. The patients had the apnea-hypopnea episode over 5 times per hour (apnea-hypopnea index $[AHI]{\geq}5$) were diagnosed as OSA after the overnight PSG. To evaluate the hard and soft tissue profiles, the cephalometric radiograms were taken at the maximal intercuspation. The correlation between the patient's age, height, weight, body mass index (BMI) and AHI was inspected in the OSA and control group. The difference between the OSA and control group was evaluated (Mann-Whitney U Test). The cephalometric influencing factors to OSA were analyzed (Pearson's correlation coefficient) statistically using SPSS statistics. Results: The OSA Group had a significantly higher BMI than the control group. The mean lower facial height (ANS-Me) was longer in the OSA group; however, statistically significant difference was not detected in the anteroposterior craniofacial measurements. The distance between mandibular plane and hyoid bone of the OSA group was significantly longer than that of the control group. The hyoid position (MP-Hyoid) had a positive correlation between AHI (P<0.001). However, the measurements of oropharyngeal airway were not different between the two groups. The hypothesis, that the antero-posteriorly narrow oropharyngeal airway may aggravate the airway resistance and give rise to a higher AHI, was rejected in the study. Conclusion: We suggest that the lateral cephalogram may be utilized as a useful method to evaluate OSA. The patients with a lower hyoid position can be expected to have higher risks of OSA. However, a comprehensive intraoral inspection, including the soft palate and tonsilar hypertrophy, is emphasized, as the lateral cepahlogram cannot visualize the oropharyngeal status completely.