치과 외래에서의 보톡스를 이용한 간단한 미용시술

이부규,Lee, Bu-Gyu 대한심미치과학회 2006 Journal of the Korean Academy of Esthetic Dentistr Vol.15 No.1

이부(턱 끝) 성형술(Genioplasty)

이부규 대한치과의사협회 2009 대한치과의사협회지 Vol.47 No.7

이부(턱 끝) 성형술

이부규 대한치과의사협회 2010 대한치과의사협회지 Vol.48 No.7

임프란트 식립을 위한 상악동 거상술의 임상적 연구

임재석,권종진,장현석,이성재,이부규 大韓顎顔面成形再建外科學會 1999 Maxillofacial Plastic Reconstructive Surgery Vol.21 No.4

A variety of materials and procedures such as sinus floor elevation, sinus-lift graft, inlay bone graft using Le Fort I osteotomy, and onlay graft have been used to create adequate bone volume in the maxillary sinus for placement of endosseous implants in the posterior atrophic maxilla. Because of the frequent lack of bone in the posterior maxilla, sinus lift procedure has become a commonly practiced treatment modality. The 138 endosseous implants of 36 patients with sinus augmentation procedures performed in Korea University Hospital from January 1991 to December 1998 were summarized and analysed. The result of this study were as follows : 1. Age ranged from 39 to 57, with a mean of 50.7. 2. The mean survival rate for 138 implants with maxillary sinus lift procedure was 80.4%. 3. There was no corelationship between the fixture length, width and the survival rate. 4. The result showed that the healing period for 8-12 months was necessary if the residual alveolar bone height was less than 5mm. 5. Autogenous iliac corticocancellous block graft showed the most favorable survival rate(95%).

백서에서 자가 구강점막세포와 혈소판 농축 혈장의 이식에 의한 점막 근 피판의 조직공학적 제작

이부규(Bu Kyu Lee),황진혁(Jin Hyuk Hwang) 대한구강악안면외과학회 2007 대한구강악안면외과학회지 Vol.33 No.4

Backgrounds: To overcome limited amount of autogenous mucosa for the reconstruction of various mucosal defect including oral mucosal defect, tissue engineered mucosa has been recently introduced. However, introduced conventional technique of tissue engineered mucosa still have serious pitfalls such as long fabrication time, fragility of the reconstructed mucosa, and complexity of the technique. Aim of the study: To examine whether the complex of preconfluent autologous keratinocytes and autologous PRP (Platelet rich plasma) can reconstruct oral mucosa on the muscular flap with easier and faster way compared to conventional mucosal tissue engineering technique. Materials and methods: One day before the operation, oral mucosa (3mm in diameter) were taken and treated for extraction of oral keratinocytes according to the routine manner. The day of operation, oral keratinocytes were prepared in the laboratory and then moved to the operating theater. Autologous PRP was also prepared and then mixed with oral keratinocytes just before grafting on the prepared muscular flap. After keratinocyte-PRP complex was seated, then a sterilized rubber sheet was placed on the graft and the elevated skin flap was replaced and sutured. Biopsies were proceeded at 3,5,7,14 and 21 days. Tissue samples were evaluated clinically, histologically, and immunohistochemically. Results: All of the oral keratinocyte-PRP complexes were successfully grafted on the recipient sites (100%). On 3 days after the operation, 1-2 continuous epithelial layer and many inflammatory cells were observed. On 5 days after the operation, increase of layers of keratinocyte was observed with less inflammatory response. Thickness of the layers was gradually increased from 7 to 21 days after the operation. Cytokeratin confirms epithelium in every specimen. Conclusions: Preconfluent graft of autogenous oral keratinocytes mixed with autogenous PRP have successfully reconstructed myo-mucosal flap. This technique could be a useful alternative for oral mucosal reconstruction in the near future.

Synthes?? 상악골 신장기를 이용한 성인 구개구순열 환자의 치험례

김준영,이부규 대한구순구개열학회 2009 대한구순구개열학회지 Vol.12 No.1

Generally, an adult cleft lip or/and palate patient shows some amount of maxillary deficiency due to limitation of bony growth caused by heavy scars resulted from previous operations such as a cheiloplasty and/or a palatoplasty at an early child age. To solve the problem, advancement of the maxilla is usually required during orthognathic surgery. However, severe tensional force resulted from heavy scars on the palate and/or the lip, as well as the bony defect at the cleft area limited sufficient advancement of the maxillary segment and finally caused relapse of the reposed maxilla. Therefore, distraction osteogenesis of the maxilla was introduced for the successful maxillary advancement in those kinds of patients. As both hard and soft tissues can be simultaneously and gradually extended with this technique, tensional force caused by heavy scars opposed to forward movement of the maxilla can be reduced to an extent not to develop severe relapse of the advanced maxilla. Since distraction osteogenesis of the maxilla was applied as one of standard protocols for the treatment of the patients with severe maxillary hypoplasia due to cleft lip and/or palate, the devices for the distraction was improved to control the vectors of distraction with better and more stable. We have treated a 23-year-old male cleft patient with a severe maxillary hypoplasia using a newly developed a maxillary distraction device and a RP model for a pre-operative simulation surgery. As a result, we could successfully move the maxilla as we designed pre-operatively and also reduce much of operation time. Therefore, we report of the case to share our experience with colleagues.

중국 덕주 지역의 구순구개열 의료 봉사 활동 보고 및 치험례 발표

이원덕,이부규,최진영,김종렬,오용석,민병일,김명진,Lee, Won-Deok,Lee, Bu-Kyu,Cho, Jin-Young,Kim, Jong-Ryul,Oh, Yong-Seok,Min, Byoung-Il,Kim, Myung-Jin 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.5

Il Woong Cleft lip and palate foundation was founded in 1968 by Professor emeritus Byoung-Il Min. Since then the foundation has operated numerous cleft lip and palate patients not only in Korea but also in under-developed countries such as Vietnam, China, and Cambodia. In December 2005, the foundation was allowed as an incorporated association by Ministry of Foreign affairs and Trade, so that it could have official status. From March 6th 2009 to March 14th 2009, we conductp,d charity cleft lip and palate operations of 23 patients in areas of Deozhou, China. Hereby we present the results of operations.

Fabrication of Microchannels and Evaluation of Guided Vascularization in Biomimetic Hydrogels

이재연,이세환,이부규,박상혁,조영삼,박용두 한국조직공학과 재생의학회 2018 조직공학과 재생의학 Vol.15 No.4

BACKGROUND: The fabrication of microchannels in hydrogel can facilitate the perfusion of nutrients and oxygen, which leads to guidance cues for vasculogenesis. Microchannel patterning in biomimetic hydrogels is a challenging issue for tissue regeneration because of the inherent low formability of hydrogels in a complex configuration. We fabricated microchannels using wire network molding and immobilized the angiogenic factors in the hydrogel and evaluated the vasculogenesis in vitro and in vivo. METHODS: Microchannels were fabricated in a hyaluronic acid-based biomimetic hydrogel by using ‘‘wire network molding’’ technology. Substance P was immobilized in acrylated hyaluronic acid for angiogenic cues using Michael type addition reaction. In vitro and in vivo angiogenic activities of hydrogel with microchannels were evaluated. RESULTS: In vitro cell culture experiment shows that cell viability in two experimental biomimetic hydrogels (with microchannels and microchannels ? SP) was higher than that of a biomimetic hydrogel without microchannels (bulk group). Evaluation on differentiation of human mesenchymal stem cells (hMSCs) in biomimetic hydrogels with fabricated microchannels shows that the differentiation of hMSC into endothelial cells was significantly increased compared with that of the bulk group. In vivo angiogenesis analysis shows that thin blood vessels of approximately 25–30 lm in diameter were observed in the microchannel group and microchannel ? SP group, whereas not seen in the bulk group. CONCLUSION: The strategy of fabricating microchannels in a biomimetic hydrogel and simultaneously providing a chemical cue for angiogenesis is a promising formula for large-scale tissue regeneration.

Anti-Inflammatory Effect of Adipose-Derived Stromal Vascular Fraction on Osteoarthritic Temporomandibular Joint Synoviocytes

Kim Hyungki,이부규 한국조직공학과 재생의학회 2020 조직공학과 재생의학 Vol.17 No.3

BACKGROUND: Osteoarthritis (OA) in the temporomandibular joint (TMJ) in the TMJ (TMJ-OA) is difficult to treat, and new alternative treatments are needed. Recently, adipose-derived stem cells (ASCs) have been introduced as a promising cell source because of their anti-inflammatory effects. However, the cost and availability of these cells limited broader applications of stem cell therapy. Thus, Thus, stromal vascular fraction (SVF) containing sufficient amount of ASCs at low cost can be an alternative. In this study, we aimed to demonstrate the use of uncultured, optimally isolated SVF for the treatment of TMJ-OA. METHODS: First, we optimized the method of isolation to harvest high-quality SVFs with a large yield of ASCs. Then, we analyzed the quantity of ASCs in the SVF and performed characterization of stem cell homology. Subsequently, to evaluate the anti-inflammatory effect of high-quality SVF, an in vitro study was performed to assess the expression patterns of inflammatory cytokines including prostaglandin E2 (PGE2), IL-6, and CXCL8/IL-8, COX2, TNF, IFN, CCL2/MCP-1 and CCL5/RANTES in co-culture with synoviocytes derived from the synovial fluid in the TMJ-OA patients. RESULTS: The SVF containing approximately 32% ASCs was isolated via the our optimized isolation method. The SVF significantly down-regulated certain inflammatory cytokines such as PGE2, CXCL8/IL-8 in TMJ-OA tissue-derived synoviocytes. CONCLUSION: Although further study is needed, our study suggests that transplantation of adipose tissue-derived SVF cells might be a feasible and a novel therapeutic option for TMJ-OA in the future.

코로나바이러스감염증-19와 관련한 구강악안면외과 진료시 임상적인 고려사항

권용대,박홍주,이부규,한세진,김형준,권대근 대한치과의사협회 2022 대한치과의사협회지 Vol.60 No.3

In order to strategically respond to COVID-19, the most important measure is to control COVID-19 by minimizing the spread of the coronavirus and preventing related diseases and morbidity. In dental and oral maxillofacial surgery treatment procedures, it is unavoidable that the patient's saliva and blood are generated in the form of droplets or aerosols. Recently, new variants of COVID-19 virus had been reported and cause more infection and faster spread. The risk of breakthrough infection, which occurs even after vaccination, is increasing. Therefore, this recommendation was prepared to help prevent infection of oral and maxillofacial surgeons exposed to such environments, and to maximize the safety of patients and medical staff.