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하악지 시상 골절단술 이후 흡수성 나사를 사용하여 고정한 환자에서 술 후 안정성에 대한 연구
권택균,김용덕,신상훈,김욱규,김종렬,정인교,Kwon, Taek-Kyun,Kim, Yong-Deok,Shin, Sang-Hun,Kim, Uk-Kyu,Kim, Jong-Ryoul,Chung, In-Kyo 대한악안면성형재건외과학회 2005 Maxillofacial Plastic Reconstructive Surgery Vol.27 No.2
This study was designed to assess skeletal stabilily after surgical correction of mandibular prognathism by bilateral saggital split ramus osteotomy(BSSRO) and fixation with absorbable screws. From July 2001 to September 2003, 30 patients with Class III malocclusion were treated with BSSRO and mandibular setback. They underwent fixation with Biosorb$^{TM}$ FX screws. Cephalograms were obtained preoperatibely, 2 or 3 days postoperatively, and about 12 months after the operation. Changes in the position of lower incisor tip, B point, and pogonion were examined on lateral cephalograms. The mean mandibular setback just after surgery was 10.6mm. 12 months after surgery, mean relapse at pogonion represented 17.9% and 15.1% at B point. Our results suggest that fixation of the bony segments with absorbable screws after BSSO may be used effectively in properly selected cases.
권택균(Taek-Kyun Kwon),변준호(June-Ho Byun),김용덕(Yong-Deok Kim),신상훈(Sang-Hun Shin),김욱규(Uk-Kyu Kim),정인교(In-Kyo Chung) 대한구강악안면외과학회 2004 대한구강악안면외과학회지 Vol.30 No.2
Odontogenic keratocysts are developmental odontogenic cysts which derived from rests of dental laminas and often found in posterior area of mandible. Because this lesion has tendency of frequent recurrence, treatment of choice is often radical removal of the lesion. Sometimes in case of large cysts, however, conservative therapy like marsupialization is often selected in treatment plan. A 39-years old woman referred to our department for evaluation of large radiolucent lesion that occupies the areas from mandible angle to upper part of ramus and condyle. In cytology, the lesion was identified as odontogenic keratocyst. Marsupialization was our treatment of choice, and the result was so favorable. 2 years later, there was small radiolucent lesion on upper part of mandibular ramus on panoramic view. It was suspected as recurred lesion, and excisional biopsy was done. On biopsy result, it was not a cystic lesion but fibrosis.
상악의 후상방 회전이동을 시행한 환자에서의 초기 안정성 평가
안상욱,권택균,이성탁,송재민,김태훈,황대석,신상훈,정인교,Ahn, Sang-Wook,Kwon, Taek-Kyun,Lee, Sung-Tak,Song, Jae-Min,Kim, Tae-Hoon,Hwang, Dae-Seok,Shin, Sang-Hoon,Chung, In-Kyo 대한악안면성형재건외과학회 2011 Maxillofacial Plastic Reconstructive Surgery Vol.33 No.3
Purpose: This study was designed to retrospectively evaluate the postsurgical initial stability of the Le Fort I osteotomy with posterior impaction and rigid internal fixation for the correction of mandibular prognathism with midface deficiency. Particular attention was paid to the magnitude and direction of the initial postsurgical change. Methods: 20 healthy patients with mandibular prognathism and midface deficiency participated in this study. All patients underwent Le Fort I osteotomy with posterior impaction and mandibular setback BSSO by one surgeon. Preoperative (T0), immediate postoperative (T1) and follow-up period (T2) cephalograms were taken and analyzed. Change between T0~T1 and T1~T2 was measured and analyzed. Results: Between T0~T1, significant differences were observed in all measurements except the ANS point and mandibular plane angle. Between T1~T2, only the occlusal plane angle was significantly changed. No significant changes were found in all other measurements. Conclusion: This study indicates that Le Fort I osteotomy with posterior impaction is stable at initial stages. Although changes in the occlusal plane angle were observed, it was caused by tooth movement after post-operative orthodontic treatment. However, more studies with larger samples are required to form definitive conclusions. Conclusion: This study indicates that Le Fort I osteotomy with posterior impaction is stable at initial stages. Although changes in the occlusal plane angle were observed, it was caused by tooth movement after post-operative orthodontic treatment. However, more studies with larger samples are required to form definitive conclusions.
두경부 선양낭성암종에서 원격전이와 관련된 임상적, 병리학적 예측 인자
성명훈(Myung Whun Sung),권택균(Taek Kyun Kwon),이상준(Sang Joon Lee),김광현(Kwang Hyun Kim),김정훈(Jeong Whun Kim) 대한두경부종양학회 2002 대한두경부 종양학회지 Vol.18 No.2
Background and Objectives : Adenoid cystic carcinoma (ACC) is a unique tumor characterized by frequent and delayed distant metastasis (DM) with uncommon regional lymph node metastasis. We evaluated the factors affecting DM of ACC and survival after appearance of DM. Materials and Methods : Medical records, radiographs and pathologic slides were reviewed for 94 patients from 1979 through 2001. Results : DM of ACC occurred in 46 patients, and developed more frequently in patients with tumors of the solid histologic subtype than in patients with tubular or cribriform subtypes. DM occurred less frequently in the sinonasal tract, and development of DM was not affected by tumor stage. Disease-specific 5- and 10-year survival rates were 88% and 72% for patients without DM, respectively and 76% and 48% for those with DM (p=0.02). Regarding the site of DM and its impact on outcomes, 30 patients had lung metastasis alone, 5 patients bone metastasis alone and 6 patients developed both lung and bone metastasis. Median survivals after appearance of DM among patients with isolated lung metastases and those with bone metastases with or without lung involvement were 54 and 21 months, respectively (p=0.04). Conclusions : Development of DM in ACC is predicted by solid histologic subtype, and major salivary gland or oral/pharyngeal rather than sinonasal primary site. Those patients with bone involvement with our without lung metastases had worse outcomes than those with pulmonary metastasis only.
골다공증 유도 백서에서 임플란트 삽입후 칼슘과 비타민 D의 섭취가 골조직에서 혈관내피세포성장인자 수용체 발현에 미치는 영향
김호철 ( Ho Chul Kim ),권택균 ( Taek Kyun Kwon ),이재열 ( Jae Yeol Lee ),송재민 ( Jae Min Song ),정인교 ( In Kyo Chung ),김규천 ( Gyoo Cheon Kim ),신상훈 ( Sang Hun Shin ) 한국조직공학과 재생의학회 2011 조직공학과 재생의학 Vol.8 No.2s
Angiogenesis is closely assocatied with bone formation and osteoporosis is risk factor of success of implant. Recently reported, uptake of calcium and Vitamin D improve bone healing process in osteoporosis. Vascular endothelial growth factor also interact bone formation through modulation of angiogenesis. The purpose of this study was to evaluate the interaction between vascular endothelial growth factor (VEGF) and calcium with vitamin D in bone tissue around implant in osteoporosis induced rats by measuring the expression of vascular endothelial grawth factor receptors (VEGFR). Titanium screw type implants were placed into tibias of ovariectomized. The rats were sacrificed at different time interval (1,2 and 4 weeks after implantaion) for immunohistochemistry with antibody for receptor of vascular endothelial growing factor 1, 2 and 3. In this study we observed 3 type vascular endothelial growth factor (VEGFR1-3). Receptor of vascular endothelial growth factor 3 (VEGFR-3) was increased by calcium and vitamin D in bone formation process but others (receptor of vascular endothelial growth factor 1 and 2) were not shown significant difference. This study, with previously published work, shows that VEGF interact with calcium and vitamin D and especially VEGFR-3 was incresed in early stage.