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강태인,허민석,안창현,최미,이삼선,최순철,박태원,Gang Tae-In,Heo Min-Suk,An Chang-Hyeon,Choi Mi,Lee Sam-Sun,Choi Soon-Chul,Park Tae-Won 대한영상치의학회 2002 Imaging Science in Dentistry Vol.32 No.3
Follicular carcinomas are the second most common form of thyroid cancer, accounting for 10 to 20% of all thyroid cancers. Follicular carcinomas have a propensity to metastasize via the bloodstream, spreading to bone, lungs, liver, and elsewhere. We described the case of a 48-year-old woman who presented with swelling of the left preauricular area, which was a consequence of a metastatic follicular carcinoma of the masticator space. Plain films showed illdefined erosive bony changes from the left condylar head to the mandibular notch. Contrast-enhanced CT images showed a well circumscribed round mass with well enhancement within left masticator space. On MR images, the mass was heterogenously hyperintense to the muscle on T2-weighted images and isointense or hyperintense to the muscle on Tl-weighted images, and showed good enhancement on contrast-enhanced Tl-weighted images. Upon microscopic examination, the metastatic mass was found to be composed of fairly uniform cells forming small follicles containing colloid, showing capsular and vascular invasion.
기저세포모반증후군과 연관된 다발성 치성각화방종의 치료시 술전 조대술과 술후 교정적 맹출의 사용 치험 1례
강태인,박영주,남정훈,안장훈,강혜진,송준호,정재안,신진업,Gang, Tae-In,Park, Young-Ju,Nam, Jeong-Hun,Ahn, Jang-Hoon,Kang, Hae-Jin,Song, Jun-Ho,Chung, Jae-An,Shin, Jin-Eob 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.5
Basal cell nevus syndrome is a rare inherited disorder characterized by mulitple cutaneous basal cell carcinoma, pits of the palms and soles, cysts of the jaws, skeletal abnormalities and ectopic calcifications. Currently there are new lines of investigation based on biomolecular studies, which aim at identifying the molecules responsible for these cysts and thus early allowing an early diagnosis of these patients. We report a case of a 9-year-old boy with the various manifestation of basal cell nevus syndrome, which are multiple odontogenic keratocysts, pits of the soles, bifid ribs, ectopic calcification, macrocephaly, and hypertelorism, etc. Total five odontogenic keratocysts were found. For the reduction of the size of the odon-togenic keratocysts, following preoperative marsupialization, there were surgically enucleated. And the impacted upper right lateral incisor and canine are tracted orthodontically.
False-Twist Draw Texturing에 관한 연구(II) -실험적 고찰-
김종섭,이재곤,강태지,Kim, Jong-Seop,Lee, Jae-Gon,Gang, Tae-Ji 한국섬유공학회 1990 한국섬유공학회지 Vol.27 No.9
Experimental verification of the mathematical model presented in part I of these series of report has been performed in this study. A modification of the theoretical model has been presented to facilitate the necking point of the threadline, where the yarn diameter, twist, and translational velocity changed. Modified theoretical model has agreed well with the experiments in predicting yarn diameter profile, translational velocity, twist, and twist contraction along the threadline in the steady sperating conditions of draw texturing of polypropylene yarns. The yarn diameter decreased slowly with the advancement from the entry to the heater folio- wed by the sudden drop at the nicking point, but twist, translational velocity, and twist contraction showed the similar but inversed profile to the yarn diameter.
Botryoid Odontogenic Cyst on Mandibular Anterior and Both Body Area: a Case Report
남정훈,김다영,박영주,안장훈,강태인,박미희,유우근,김보균,이정원,김정희,Nam, Jeong-Hun,Kim, Da-Young,Park, Young-Ju,Ahn, Jang-Hoon,Gang, Tae-In,Park, Mi-Hee,Yu, Woo-Geun,Kim, Bo-Gyun,Lee, Jung-Won,Kim, Jung-Hee Korean Association of Maxillofacial Plastic and Re 2010 Maxillofacial Plastic Reconstructive Surgery Vol.32 No.4
Botryoid odontogenic cyst (BOC) is considered a rare multilocular variant of the lateral periodontal cyst. In this report, a 67-year-old male visited with chief complaint of severe mobility on mandibular incisors. Multilocular radiolucent lesion was seen from the right premolar to the left premolar area, involving almost the whole mandible. Histologically, the botryoid odontogenic cyst showed focal nodular thickening of the lining epithelium. These thickening often showed swirling appearance of the cells. Cyst enucleation and bone graft on mandible anterior and both body area were performed under general anesthesia, and postoperative healing was favorable without recurrence.
가토골수에서 유래된 골모세포의 하악골 결손부 이식시 골형성에 미치는 효과
박영주,남정훈,김보균,전민수,정재안,이정원,안장훈,강태인,박미희,임성철,Park, Young-Ju,Nam, Jeong-Hun,Kim, Bo-Gyun,Jeon, Min-Su,Chung, Jae-An,Lee, Jung-Won,Ahn, Jang-Hoon,Gang, Tae-In,Park, Mi-Hee,Lim, Sung-Chul 대한악안면성형재건외과학회 2010 Maxillofacial Plastic Reconstructive Surgery Vol.32 No.4
Purpose: The purpose of this experiment was to evaluate the clinical effect of cultured autoglogous osteoblasts as a way to treat the defect of mandible in rabbits. Materials and Methods: Twelve rabbits were used to determine the rate of osteogenesis. The osteoblasts were obtained from the iliac crest of rabbits using aspiration. They were then cultured in Dulbecco's Modified Eagles's Medium (DMEM) with beta-glycerophosophatate, L-ascorbicacid, and dexamethasone to proliferate and differentiate osteoprogenitor cells. The expression of osteogenic markers were detected by reverse transcription-polymerase chain reaction (RT-PCR) and silver nitrate staining techniques. Five, 10-mm holes were placed in each rabbit mandible to simulate defective regions with the use of a low speed trephine bur. In the experimental group, the previously cited defects were grafted with both activated osteoblastic and autogenous bone. The control group, however, was only grafted with autogenous bone. Both groups were then analyzed at 2, 4, and 8-week intervals using bone histomorphometric analysis. Results: According to histomorphologic analysis, the rates of new bone formation at the 2, 4, and 8-week intervals were 36%, 51%, and 23% for the control group, respectively; 52%, 39%, and 28%, for the experimental group, respectively. The experimental group showed higher rates of new bone formation compared to the control group at both the 2-week and 8-week interval. Conclusion: Bone marrow-derived osteoblasts seems to be a promising bone graft material.
가토의 골수 세포에서 분화된 골모세포의 골 형성에 혈소판 농축 혈장이 미치는 효과: 조직 형태학적 분석
박영주,신진업,정재안,전민수,김보균,송준호,연병무,임성철,강태인,Park, Young-Ju,Shin, Jin-Eob,Chung, Jae-An,Jeon, Min-Su,Kim, Bo-Gyun,Song, Jun-Ho,Yeon, Byong-Moo,Lim, Sung-Chul,Gang, Tae-In 대한악안면성형재건외과학회 2007 Maxillofacial Plastic Reconstructive Surgery Vol.29 No.6
Purpose: The effect of platelet-rich plasma(PRP) on osteogenesis of marrow-derived osteoblasts on histomorphometric analysis in the mandible of rabbit was assessed. Materials and Method: Bone marrow cells were obtained from iliac bone of rabbits and were cultured in a Dulbecco's Modified Eagle's Medium(DMEM) with Dexamethasone, L-Ascortic acid, ${\beta}$-Glycerophosphate to proliferate and differentiate into osteoblasts for $4{\sim}5$ weeks. The expression of osteogenic mar-kers was detected by reverse transcription-polymerase chain reaction(RT-PCR) and silver nitrate stain. Then we prepared bony defects in the mandible of rabbit, 10.0mm in diameter and 4.0mm deep, by trephine bur. In the control group, the defects were filled with autogenous bone and cultured osteoblasts. In the experimental group, the defects were filled with autogenous bone, cultured osteoblasts and PRP. 2 weeks, 4 weeks, 8 weeks later, each group was evaluated with histological and histomorphometric analyses. Results: In vitro, osteoblasts were identified on RT-PCR and silver nitrate stain. According to histological observation, at 2 weeks well-developed anasto-mosing newly-formed woven bone was observed, at 4 weeks anastomosing newly-formed woven bone having osteoblastic activation was observed, and at 8 weeks thick newly-formed woven bone was observed in both control and experimental groups. According to histomorphometric analysis, there were 1.5% more newly-formed bone volume in experimental group than control group at 2 weeks, 28.4% more at 4 weeks, 4.3% more at 8 weeks. Particularly there were significant differences in bone volume at 4 weeks and 8 weeks new bone. Conclusion: Our results demonstrated PRP may enhance osteogenesis of marrow-derived osteoblasts at 4 weeks, 8 weeks.
기능적 부하 후 “Short Implant” 주변의 골 흡수에 대한 방사선학적 연구
박영주(Young-Ju Park),남정훈(Jeong-Hun Nam),노경록(Kyung-Lok Noh),연병무(Byoung-Moo Yeon),유우근(Woo-Geun Yu),이정원(Jeong-Won Lee),안장훈(Jang-Hun Ahn),강태인(Tae-In Gang),박미희(Mi-Hee Park) 대한치과의사협회 2010 대한치과의사협회지 Vol.48 No.8
Purpose: The short dental implant is considered as possible solution in the alveolar bone height deficient cases. The aim of this study was to evaluate clinical availability of short implants by measuring the marginal bone loss of short length implants and comparing with that of conventional length implants. Materials and Methods: The groups were composed of patients who had received at least one implant. The samples of this study were selected from patients who with functional loading after prosthetic treatment for 1 year follow up period. The implants with a length of 5.7㎜ and 6㎜ were considered short. (Bicon Dental implants, USA). The experiment group was composed of 4.5×6㎜, 5×6㎜, 6×5.7㎜ implants (total 18 implants were placed in 14 patients, 8 on maxilla, 10 on mandible). The control group was composed of 4.5×8㎜, 5×8㎜, 4.5×11㎜, 5×11㎜. All implants were selected only by implants placed on molar area. We evaluated marginal bone loss in radiographic images at baseline (implant loading) and 3, 6, 12 months after loading. Additionally, crown-to-implant ratio was evaluated, and marginal bone loss according to crown-to-implant ratio after functional loading was analyzed. Results: The short implant group had a mean marginal bone level of -0.52±0.69 ㎜; the 8㎜ group, -0.22±0.82㎜; and the 11㎜ group, -0.10 ± l.09㎜ after 1 year of functional loading. But significant differences were not detected between three groups at every follow-up period. Crown-to-implant ratio in short implant group was 1.55±0.23; 8㎜ group was 1.15±0.18; and 11㎜ group was 0.92±0.15. Additionally, significant differences between three groups were founded. (P<.0001) The greatest marginal bone loss after 1 year follow-up was founded at crown-to-implant ratio 1-1.49 range in short implant. Conclusion: The marginal bone loss of short implants was comparable to that of long implants. So, the short implants can be a clinically acceptable option.