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남정훈,노경록,유우근,이병민,전지현,박수현,안장훈,김정희,Nam, Jeong-Hun,Noh, Kyung-Lok,Yoo, Woo-Geun,Lee, Byeong-Min,Jeon, Ji-Hyeon,Park, Su-Hyun,Ahn, Jang-Hoon,Kim, Jung-Hee Korean Association of Maxillofacial Plastic and Re 2011 Maxillofacial Plastic Reconstructive Surgery Vol.33 No.1
The goal of this treatment is the surgical-orthodontic eruption of impacted permanent teeth associated with a large dentigerous cyst in a preadolescent patient. Although enucleation of the entire cyst and the extraction of impacted teeth are common treatments, missing permanent teeth cause several problems in young patients. In this report, an 11-year-old female visited with the chief complaint of a large radiolucent lesion from the mandibular anterior area to the left mandibular posterior area. The permanent left canine and premolars were displaced toward the mandibular inferior border area. The extraction of infected deciduous teeth and marsupialization were performed. After 4 months, orthodontic buttons for forced eruption were applied to the impacted permanent teeth. The teeth emerged into the oral cavity 3 months after the orthodontic treatment. Although the root form was abnormal, there were no other pathogenic signs. The alveolar bone had a normal trabecular pattern and the teeth appeared to be well maintained at postoperative 24 months.
하악 후구치 삼각부에 발생한 후천성면역결핍증 관련 카포시육종: 증례보고
박영주,남정훈,노경록,방은오,김다영,김준현,정재안,신진업,강응선,Nam, Jeong-Hun,Park, Young-Ju,Noh, Kyung-Lok,Pang, Eun-O,Kim, Da-Young,Kim, Jun-Hyun,Chung, Jae-An,Shin, Jin-Eob,Kang, Eung-Seon 대한구강악안면외과학회 2009 대한구강악안면외과학회지 Vol.35 No.3
There are several oral lesions related with AIDS, such as candidiasis, hairy leukoplakia, Kaposi's sarcoma, aphthous stomatitis, lichen planus, and other opportunistic infectious diseases. Among the others, Kaposi's sarcoma, the most common malignant tumor associated with AIDS, is closely linked to the number of CD4+ T cell. Kaposi's sarcoma often occurs in palate, the most prone site, and has characteristic clinical features in most cases. Sometimes, the tumor induces underlying bone destruction at late stage. We report a case of a 27 year-old man with AIDS-associated Kaposi's sarcoma at left lower retromolar triangle, parapharyngeal area and discuss the management of AIDS patients in dentistry.
백서 두개골결손모델에서 실크단백과 골형성단백 이식체가 골재생에 미치는 영향
남정훈(Jeong-Hun Nam),노경록(Kyung-Lok Noh),방은오(Eun-O Pang),유우근(Woo-Geun Yu),강응선(Eung-Sun Kang),권해용(Hae-Yong Kweon),김성곤(Seong-Gon Kim),박영주(Young-Ju Park) 대한구강악안면외과학회 2010 대한구강악안면외과학회지 Vol.36 No.5
Introduction: This study evaluated the capability of silk fibroin (SF) and recombinant human bone morphogenetic protein-2 loaded SF (SF-BMP) as a bone defect replacement matrix when grafted in a calvarial bone defect of rats in vivo. Materials and Methods: A total 70 calvarial critical size defects (5.0 mm in diameter) made on 35 adult female Sprague-Dawley rats were used in this study. The defects were transplanted with (1) rhBMP-2 loaded silk fibroin graft (SF-BMP: 0.8+10 μg), (2) Silk fibroin (SF: 10 μg), and (3) no graft material (Raw). The samples were evaluated with soft x-rays, alkaline phosphatase activity, calcium/phosphate quantification, histological and histomorphometric analysis at postoperative 4 and 8 weeks. Results: The SF-BMP group (48.86±14.92%) had a significantly higher mean percentage bone area than the SF group (24.96±11.01%) at postoperative 4 weeks.(P<0.05) In addition, the SF-BMP group (40.01±12.43%) had a higher % bone area at postoperative 8 weeks than the SF group(33.26±5.15%). The mean ratio of gray scale levels to the host bone showed that the SF-BMP group (0.67±0.08) had a higher mean ratio level than the SF group (0.61±0.09) at postoperative 8 weeks. These differences were not statistically significant.(P=0.168 and P=0.243, respectively) The ratio of the calcium and phosphate contents of the SF-BMP (0.93±0.22) group was lower than that of the SF (1.90±1.42) group at postoperative 4 weeks. However, the SF-BMP group (0.75±0.31) had a higher Ca/PO4 ratio than the SF (0.68±0.04) at postoperative 8 weeks. These differences were not statistically significant.(P=0.126 and P=0.627, respectively) For the bone-specific alkaline phosphatase (ALP) activity, which is recognized as a reliable indicator of the osteoblast function, the SF-BMP (23.71±8.60 U/L) groups had a significantly higher value than the SF group (12.65± 6.47 U/L) at postoperative 4 weeks.(P<0.05) At postoperative 8 weeks, the SF-BMP (21.65±10.02 U/L) group had a lower bone-specific ALP activity than the SF group (16.72±7.35 U/L). This difference was not statistically significant.(P=0.263) For the histological evaluation, the SF-BMP group revealed less inflammation, lower foreign body reactions and higher bone healing than the SF group at postoperative 4 and 8 weeks. The SF group revealed more foreign body reactions at postoperative 4 weeks. However, this immunogenic reaction decreased and the remnant of grafted material was observed at postoperative 8 weeks. For histomorphometric analysis, the SF-BMP group had a significantly longer bone length to total length ratio than those of the SF group at postoperative 4 and 8 weeks.(P<0.05) Conclusion: The rhBMP-2 loaded silk fibroin graft revealed fewer immunoreactions and inflammation as well as more new bone formation than the pure silk fibroin graft. Therefore, silk fibroin may be a candidate scaffold for tissue engineered bone regeneration.
위축된 치조골에서 치조골 수평 확장술을 이용한 임플란트 이식술에 관한 임상연구
박영주,남정훈,송준호,연병무,노경록,방은오,정재안,신진업,강응선,Park, Young-Ju,Nam, Jeong-Hun,Song, Jun-Ho,Yeon, Byung-Moo,Noh, Kyung-Lok,Pang, Eun-O,Chung, Jae-An,Shin, Jin-Eob,Kang, Eung-Seon 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.4
The aim of this study was to evaluate the clinical applicability of a ridge splitting technique for reconstruction of narrowed edentulous alveolar ridges for dental implantation. 41 patients with 47 edentulous areas were included in this study. After corticotomy of a rectangular buccal segment and about 3-4 weeks healing period, the alveolar ridge was splitted, implant was placed. The initial ridge width varied between 2.5 and 7.0mm, average was 3.99mm. 68 dental implants were placed, and the gap between the implants and the bone is filled with various bone graft material, or none. All splitted sites showed sufficient bone volume for insertion of the implants at the moment of implantation. Over 1 year of follow-up period, five implants(7.3%) had mobility in two patients, among them, 2 implants(2.9%) sustained infection and removed. And any other complications were not noted. Our conclussion is that ridge splitting of the narrow edentulous area is a reliable and safe procedure in horizontally deficient ridges.
가토 하악골 결손부의 자가골 이식시 혈소판 풍부혈장이 골형성 촉진에 미치는 영향에 관한 연구
전민수,김보균,송준호,연병무,이영우,노경록,김다영,방은오,김주현,남정훈,강태인,임성철,박영주,Jeon, Min-Su,Kim, Bo-Gyun,Song, Jun-Ho,Yeon, Byong-Moo,Lee, Young-Woo,Noh, Kyung-Lok,Kim, Da-Young,Pang, Ean-O,Kim, Jun-Hyun,Nam, Jeong-Hun,Gang, Ta 대한악안면성형재건외과학회 2008 Maxillofacial Plastic Reconstructive Surgery Vol.30 No.2
Purpose : Recently, various materials were developed for enhancing bone formation capacity. Platelet rich plasma(PRP) is an autologous source with several growth factors and obtained by sequestering and concentrating platelets by gradient density centrifugation. This study was to evaluate the effect of PRP on healing of grafted bone. Materials and methods : Two blood samples were obtained and analysed for measuring platelet counts of normal blood and PRP. In experimental group, two defects of mandibular bone, 10mm in diameter and 4.0mm deep, were created in the mandible and immediately grafted with autogenous bone chips mixed with PRP. In control group, same bone defects were prepared and grafted with autogenous bone chips. Gelform was used for carrier of PRP. 2 weeks, 4 weeks, 8 weeks later, each group was evaluated with histologi-cal and histomorphometric analyses. Results : According to histological observation, experimental group was showed more anastomosing newly-formed woven bone having osteoblastic activation than control group. According to histomorphometric analysis, there were 9.11% more newly-formed bone volume in experimental group than control group at 2 weeks, 7.91% more at 4 weeks, 20.08% more at 8 weeks. Conclusion: Our results demonstrated PRP in autogenous bone graft could enhance the bone formation.
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.
변형 구개 유경 판막을 이용한 상하악 전방골 분절 성형술
박영주(Young Ju Park),남정훈(Jeong Hun Nam),연병무(Byoung Moo Yeon),송준호(Jun Ho Song),노경록(Kyung Lok Noh),방은오(Eun O Pang),김다영(Da Young Kim),김준현(Jun Hyeon Kim),안장훈(Jang Hun Ahn),강태인(Tae In Gang) 대한치과의사협회 2009 대한치과의사협회지 Vol.47 No.6
This article presents a modified palatal pedicled incision design in anterior segmental maxillary osteotomy. This method includes the circumcrevicular incisions and two vertical relaxing incisions. Then, it is different from the Couper’s method with vestibular horizontal incision and other anterior segmental osteotomy techniques. The main advantages of this method are an improved visibility of surgical field and favorable preservation of palatal pedicle. A patient who had been operated by anterior segmental maxillary and mandibular osteotomy without pre operative orthodontic treatment was analyzed for advantages and complications during the intraoperative and early post operative period. There are no specific major complications such as infection, gingival recession and dehiscence. And the patient had a pleasing esthetic facial appearance.