소아에서 나타난 비구개관낭의 치험례

모정희,정현구,조태식,김효석,박성규,이난영 조선대학교 구강생물학연구소 2002 口腔生物學硏究 Vol.26 No.2

The nasopalatine duct cyst is the most common non-odontogenic cyst in the oral area and is thought to be originated from the epithelial remnants of the nasopalatine duct. The nasopalatine duct cyst have been mentioned to be an overall incidence of 1.7-11.9% of all jaw cyst. More males than females are affected by that. It could occur all around the age, and especially in their 40th and 60th it happens the most and in childhood it is very rare. Proper treatment for nasopalatine duct cyst is enucleation. In the case of very large cysts, it is likely to be a risk of naso-oral or antral-oral fistulas or of devitalization of teeth, marsupialization is indicated. The purpose of case report is that a nasopalatine duct cyst in is very rare in childhood. A 9-year-old boy was referred to the chosun university pedodontics clinic that this child who has anterior palatal swelling is in routine check. The size of the cyst was so big that the marsupialization was committed and obturator was put. This patient is on the continuous observation. we treated the nasopalatine duct cyst with obturator.

남녀 대학생의 성역할 모델과 취업 및 결혼관

김현주,이동원,김모란 이화여자대학교 한국문화연구원 1995 韓國文化硏究院 論叢 Vol.66 No.1-3

This study examines the differences in the expectations of employment and marriage among Korean university students. We focus on the gender differences among students. The data were collected through self-reported questionnaires in 1994. The sample size is 894 cases. Because the sexual division of labor is still a prominent pattern in Korea, we expect that the ideals and preparations, in the male-oriented employment area and in the female-oriented marriage area would show differences among female and male students. We found no difference in the employment area but significant differences in the marriage area. Rather, sex role models were found having significant implications in the male-female differences. Major findings related to marriage show that the gender effects are overlapping with the sex role model effects. However, the differences in employment area which do not show the gender difference depends on the sex role model. The results show that most university students eager to and prepare well to have a job. Although most students expect to marry, and increasing proportion of female students decide not to marry. Major reasons of the negative perspective for marriage seem to be related to the perception that the present marriage system is unfavorably constructed for women. Even if many of university students show the sign on egalitarian perspectives, the pace of changes toward egalitarianism among male students lags far behind that of among women. Based on these findings we can see many students try to maximize their interests. They would like to enjoy the stability of the preexisting sexual division of labor as well as the fruit of egalitarian division of labor.

'에너지와 환경' 단원 개발과 지도 탐색

모기수,김현재 仁川敎育大學校 科學敎育硏究所 1998 과학교육논총 Vol.10 No.-

In this study, the purpose is to develope and teach Energy and Environment unit which is under developed in the primary science education. This study was carries out as follows : 1) The contents of Energy and Environment unit are composed of the experience science which the student can easily acquire in every day life. 2) The individual or cooperative learning and holistic learning approach were taken as instructional methods. This study suggests that the energy and environment unit which can give not only children and confidence but also participate actually in the unit with interest and concern. Then, The new instructional methods oriented to children such as the individuals or cooperative learning and holistic learning approach should be applied to the modernization of open education in practical and effective method.

소아에서의 Nd : YAG Laser를 이용한 치은착색제거술 YAG Laser in children

모경희,박헌동,박종휘,김효석,정현구,설재헌,이병채 조선대학교 구강생물학연구소 2003 口腔生物學硏究 Vol.27 No.1

Melanin is normally found in the skin of all people, and normal pigmentation of the intraoral tissues is a relative frequent finding. Gingival hyperpigmentation may cause esthetic problems and embarrassment, especially in patients with a gummy smile. Melanin pigmentation is related to etiologic factor such as hormon, systemic factor, drug, smoking and gingival inflamation. Depigmentation procedure can be Performed by gingival epithelium removing procedure, gingivectomy, free gingival graft, laser therapy, dry ice, Vitamin C and phenol-alcohol method. We could obtain favorable esthetic results by procedures such as Nd: YAG laser. The Nd:YAG laser was set at 4 watt, 50mJ, 80 pulse per second. The procedures were performed with contact mode in all pigmented areas by using a handpiece with a 320㎛ diameter fiber optic. Ablation of the gingival hyperpigmented gingiva appeared healthy, pink, and firm. No recurrence of hyperpigmentation had been found in 6 months of follow-up.

임플란트의 collar design이 변연골과 연조직에 미치는 영향

유현상,강선녀,정창모,윤미정,허중보,전영찬 대한치과보철학회 2012 대한치과보철학회지 Vol.50 No.1

연구 목적: 임플란트 경부가 잘 설계된 경우 양호한 연조직 반응을 통해 변연골을 보존하는데 도움이 된다. 본 실험에서는 연, 경조직 경계부에 가장 가까이 위치하는 임플란트의 collar design이 변연골 변화와 연조직 반응에 미치는 영향을 동물실험을 통해 알아보고자 하였다. 연구 재료 및 방법: 2마리의 건강한 Beagle dog에 임플란트 collar design만 다른 두 종류의 임플란트(Neobiotech Co. Seoul, Korea)를 식립하였다. Collar에 bevel 을 부여한 군(Bevel 군)과 "S"자 형태를 부여한 군(Bioseal 군)으로 나누어 마리 당 7개, 군당 7개, 총 14개의 임플란트를 무작위로 식립한 후 Healing abutment를 즉시 체결하였다. 디지털 표준구내 방사선사진을 이용해 4주 간격으로 총 12주간 근원심 변연골 변화를 관찰하였고, 12주에 희생하여 조직학적 분석을 통해 협설 변연골 흡수 및 임플란트 주변 연조직 반응을 평가하였다. Mann-Whitney test를 통해 동일한 방사선 사진 촬영 시점에서 근원심 변연골 변화량 및 조직계측치를 군 간 비교하였고, Kruskal-Wallis test를 통해 방사선 사진상 근원심 변연골 변화량이 시간에 따른 차이가 있는지 군 내 분석 한 후 Duncan test를 통해 사후 검증하였다(α=.05). 결과: 방사선학적 분석 결과 각 촬영 시점에서 두 군간 근원심 변연골 변화량의 차이를 보이지 않았다(P>.05). 군 내에서 시간에 따른 근원심 변연골의 흡수량을 분석한 결과 Bevel 군에서는 시간에 따른 차이를 보이지 않았으나 (P>.05), Bioseal 군에서는 시간에 따른 차이를 보였으며, 4주및8주와 비교했을 때 12주에서 변연골의 증가를 보였다(P<.05). 조직학적 분석 결과 협설측 변연골 흡수량에서 두 군간 차이를 보이지 않았으나 (P>.05), Bevel 군에 비해 Bioseal 군에서 더 견고한 결합조직부착을 관찰할 수 있었으며, 생물학적 폭경의 값은 두 집단 간 차이를 보이지 않은 반면에 (P>.05), 접합상피부착은 Bevel 군에서 유의하게 길었고, 결합조직부착은 Bioseal 군에서 더 길게 나타났다(P<.05). 결론: Bevel 군에 비해 Bioseal 군에서 결합조직부착은 길게 형성된 반면에 접합상피부착은 더 짧게 나타났으며, 생물학적 폭경과 초기 변연골 흡수에는 차이가 없음을 알 수 있었다. 연조직 반응의 차이가 실제 기능하중 하에서 변연골 변화에 미치는 영향에 대해서 향후 연구가 필요할 것으로 생각된다. PURPOSE. The purpose of this study was to investigate the effects of implant collar design on marginal bone change and soft tissue response by an animal test. MATERIALS AND METHODS. Two types of Implant (Neobiotech Co. Seoul, Korea) that only differs in collar design were planted on two healthy Beagle dogs. The implants were divided into two groups, the first group with a beveled collar (Bevel Group) and the second group with "S" shaped collar (Bioseal group). Standardized intraoral radiographs were used to investigate the mesio-distal change of the marginal bone. Histological analysis was done to evaluate the bucco-lingual marginal bone resorption and the soft tissue response adjacent to the implant. Mann-Whitney test was done to compare the mesio-distal marginal bone change at equivalent time for taking the radiographs and the tissue measurements between the groups. RESULTS. Radiographic and histological analysis showed that there was no difference in marginal bone change between the two groups (P>.05). Histological analysis showed Bioseal group had more rigid connective tissue attachment than the Bevel group. There was no difference in biological width (P>.05). Bevel group showed significantly longer junctional epithelium attachment and Bioseal group showed longer connective tissue attachment (P<.05). CONCLUSION. For three months there were no differences in marginal bone change between the Bevel group and the Bioseal group. As for the soft tissue adjacent to the implant, Bioseal group showed longer connective tissue attachment while showing shorter junctional epithelium attachment. There were no differences in biologic width.

Nd-YAG 레이저 조사와 불소도포가 법랑질의 내산성 변화에 미치는 영향에 관한 실험적 연구

모현철,양규호 전남대학교 치과대학 1991 전남치대논문집 Vol.3 No.1

The purpose of this study was to examine the combined effects of a pulse d Nd-YAG laser and acidulated phosphate fluoride(APF) on acid resistance of bovine tooth enamel. The materials were 54 freshly extracted bovine permanent teeth with intact smooth enamel surfaces and sectioned sagitally and horizontally for 214 experimental specimens. To determine the most effective energy density of laser in increasing acid resistance of tooth enamel, the authors divided 70 specimens into 7 groups including unlased control and 6 experimental groups. Among them, 60 specimens for 6 experimental groups were exposed to a pulsed Nd-YAG laser under conditions ranged from 10 to 60 J/㎠ with an increment of 10J/㎠. Total 70 specimens for unlased control and 6 xperimental groups were etched with 1ml of 0.5N HCIO_4 for 30sec at room temperature and then the amount of dissolved calcium in the acidic solution was determined with an atomic absorption spectrophotometer. Scanning electron microscopic(SEM) observations were also made to examine the enamel surfaces of the lased teeth with 14 specimens for unlased control and 6 experimental groups. To survey the combined effects of a pulsed Nd-YAG laser and APF on acid resistance of enamel, the authors divided 90 specimens into 9 groups according to treatment method(APF only, APF after lasing, lasing after APF) and fluoride application time(4min, 60min, 24hr). After determination of the most effective laser-APF combination method on acid resistance by the amount of dissolved calcium in the acidic solution, the rest 40 specimens for SEM were divided into 20 groups according to treatment method(untreated control, APF only, the most effective laser + APF method) and etching time(non-etching, 15, 30, 60, 90 sec). And then, the surfaces of each treated specimens were also observed with SEM. The results were as follows : 1. The acid resistance of enamel surface was increased significantly compared to untreated control at the laser energy density of 40J/㎠ and 50J/㎠, but more increased at 50J/㎠ without statistical difference between both groups. Laser energy density of 40J/㎠ produced the almost uniform fusion of the lased enamel surface, while that of 50J/㎠ produced the fusion of enamel surface and fine cracks of a mosaic pattern. 2. In the groups etched for 90 sec, the enamel surface of lasing(50J/㎠) only group showed its prism structure as clearly as in the control, APF only group. But a part of enamel structure was still resistant to acid in the group treated with APF after lasing. 3. Longer incubation with APF did bring about an increase in acid resistance but there was no significant increase in acid resistance from 4min treated group with the same treatment method except the group treated APF for 24hr after lasing(50J/㎠). 4. The group of APF application after lasing(50J/㎠) caused a remarkable increase in acid resistance of the enamel, while the group of lasing after APF application showed a lesser effect similar to either APF only or lasing only group.

후두 미세 수술전후의 음성기능분석

김영모,조정일,김철호,김영진,하현령 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.9

N-Benzyl-4-methylbenzene-1, 2-diamine의 일산화질소 생성 및 NF-kB 활성화에 대한 억제 작용

신현모, 한상배, 김영수 충북대학교 동물의학연구소 2008 Journal of Biomedical and Translational Research Vol.9 No.1

본문참고

[P8-81] Stimulatory Effects of Aqueous Extract from Cuscuta chi­nensis Lam. on the Proliferation and Differentiation of Osteoblastic MG-63 Cells

Hyun Mo Yang,Hyun一Kyung Shin,Jin-Kyung Kim 한국식품영양과학회 2007 한국식품영양과학회 학술대회발표집 Vol.2007 No.10

ProFile을 이용한 근관형성 시 anticurvature filing 방법의 영향

송현지,장주혜,조경모,김진우 大韓齒科保存學會 2005 Restorative Dentistry & Endodontics Vol.30 No.4

본 연구에서는 ProFile로 근관형성 시 anticurvature filing 방법의 영향을 평가하고자 하였다. 변형된 Bramante 법을 이용해 36개의 레진 블록을 치근단으로부터 8 mm부위와 근관의 최대 만곡 부위에서 절단한 후 재조립하였다. 근관형성의 동작에 따라 anticurvature Hling motion, oircurnferential filing motion, straight up-and-down motion의 3가지 실험군으로 분류한 다음 ProFile로 근관을 형성하였으며, 술 전·후의 단면을 stereomicroscope로 촬영, 저장하고 중첩하여 근관 단면의 변화와 근관의 중심 이동률을 비교 평가하였다. 모든 위치에서 단면적 변화량, 만곡 내측으로의 형성량과 중심 이동률은 세 군 간에 유의한 차이가 없었으며, 만곡 외측으로의 형성량은 치근단으로부터 8 mm 부위에서 anticurvature filing motion, oircurnferential filing motion,straight up-and-down motion의 순으로 많았으나, 근관의 최대 만곡 부위에서는 차이가 없었다. 이상의 결과에서 만곡 근관의 위험 부위에서 ProFile로 근관형성 시 anticurvature filing motion의 영향은 다른 motion과 비교해 볼 때 유의할 만한 차이가 없는 것으로 생각된다. This study investigated the effect of anticurvature filing method on preparation of the curved root canal using ProFile. Thirty six resin blocks were divided equally into three groups by instrumentation motions: anticurvature filing motion, circumferential filing motion and straight up-and-down motion. Each resin block was sectioned at 8 mm level from the apex and at the greatest curvature of the canal and reassembled in metal mold by a modified Bramante technique. All groups were instrumented with the ProFile system. At each levels, image of sectioned surface were taken using CCD camera under a stereomicroscope at ×40 magnification and stored. Distances of transportation at the inner and outer area of curvature and the centering ratio were determined and compared by statistical analysis, along with the assessment of the increase of root canal cross-sectional area. The results were as follows; 1. In all groups, there was no statistical difference in the mean increase of root canal cross-sectional area, the centering ratio, and the mean distances of transportation at the inner area of curvature at each level. 2. At 8 mm level from the apex, the mean distances of transportation at the outer area of curvature decreases in following order anticurvature filing motion, circumferential filing motion, straight up-and-down motion but, no significant difference at the greatest curvature of the canal among three groups. Effect of anticurvature filing motion using ProFile does not seem to be different from other instrumentation motions at the inner area of curvature in curved root canal.[J Kor Acad Cons Dent 30(4):327-334,2005]