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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.
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.
남정훈(Jung Hoon Nam),김성문(Sung Mun Kim) 한국사회체육학회 2008 한국사회체육학회지 Vol.0 No.34
The purpose of this study was to develop psychological skill factor scale for short track speed skaters. The 76 items in the existing scale developed were selected to verify the structural validation of short track speed skaters` psychological skill factors and the 32 items were made through interviews and open-ended questionnaire in the national team coaches and former current national short track speed skaters. and the total of 108 items were selected in preliminary items. Four hundred forty one subjects were surveyed after 51 items of 7 factors were extracted through relevance and content validation of items. Exploratory factor analysis was conducted to seek the factors of psychological skill factor scale of short track speed skaters and confirmatory factor analysis was done to verify the conceptual validation. The results are as follows: First, the psychological skill scale of short track speed skaters consisted of 4 factors(strategy, needs for victory, mental toughness, self-confidence). Second, the result of reliability and index values of good of fit was rated as good(Cronbach`α=.777~.802, x2=78.56, GFI=.90, AGFI=.89, RMR=.05).
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.
기능적 조음장애아동이 산출한 마찰음의 음향음성학적 특성
남정훈(Nam Jeonghoon),이봉원(Yi Bong-won) 한국음성학회 2010 말소리와 음성과학 Vol.2 No.4
The purpose of this study was to compare the acoustic properties of fricatives, /ㅅ, ㅆ/ produced by children with functional articulation disorder and normal children (N=20, aged 6-7). All subjects showed significant differences in both the length of friction intervals and breathing intervals of fricatives according to the changes in the environment presented within each group. However, there is a difference in the extent of variation in length between the two groups. This means that children with functional articulation disorder have greater difficulty in adjusting fricative noises according to changes in the CV · VCV environment than normal children.