컴포머의 재석회화 효과에 관한 비교 연구

정회민,김용기,김종수,권순원,Chung, Hoi-Min,Kim, Yong-Kee,Kim, Jong-Soo,Kwon, Soon-Won 대한소아치과학회 2002 大韓小兒齒科學會誌 Vol.29 No.4

소아치과 임상에서 심미수복 재료로 널리 사용되고 있는 컴포머의 불소 유리양상과 수복물 인접 우식법랑질에 대한 재석회화 효과를 평가해 보고자 본 연구를 시행하였다. 음성 대조군으로 복합 레진인 Z-100을 I 군으로, 양성 대조군으로 글라스 아이오노머인 Fuji II LC를 IV군으로 설정하였으며, 실험군으로는 Dyract AP와 F-2000을 II군과 III군으로 설정하였다. 불소 유리량의 측정을 위하여 각 군에 따라 동일한 디스크를 제작하여 증류수에 담근 후 1일부터 14일까지 매일 측정하였다. 또한 협면이 건전한 우전치를 대상으로 인공 우식을 유발시킨 후 각 군별로 수복물을 충전한 다음 가철성 장치에 이를 부착하여 구강 내에서 2주간 유지시킴으로써 수복물 주위 우식법랑질에 대한 각 수복재의 재석회화 효과를 비교 평가하였다. I군은 불소 유리를 하지 않았으며, IV군에서 가장 높은 불소 유리량을 보였다(p<0.05). II군과 III군은 IV군보다 낮은 불소 유리량을 보였으며(p<0.05), III군이 II군보다 불소 유리량이 많았다(p<0.05). 편광 현미경 관찰 결과 모든 군에서 병소가 거의 소실되거나 흔적만 남아있는 양상이 다수 관찰되어 각 군 공히 상당한 재석회화가 일어났음을 보여주었다. 한편, I군과는 달리 II, III, IV 군에서는 수복물의 변연부에 Inhibition zone이 두드러지게 나타났으며, II, III, IV 군으로 갈수록 재석회가 충실한 양상을 보여주었다. 미세경도 측정 결과 우식부위가 대조부위보다 전반적으로 낮게 나타났으나 II, III, IV 군의 경우 수복물 인접부의 미세경도치는 대조부의 수치와 유사하게 나타났으며 수복물 변연에서 멀어지면서 감소하는 양상을 보였다. The purpose of this study was to compare the amount of fluoride release and remineralizing effect of compomer with those of glass ionomer cement and composite resin. Composite resin($Z-100^{(R)}$) was used for negative control group(Group I), glass ionomer(Fuji II $LC^{(R)}$) for positive control group(Group IV), compomer(Dyract $AP^{(R)}$ and $F-2000^{(R)}$) for experimental group(Group II and Group III). The results obtained can be summarized as follows : 1. Glass ionomer showed the higher amount of fluoride release than compomer groups. Composite resin showed no fluoride release during test period. 2. Significant evidence of remineralization could be noticed in samples of all groups. The highest degree of remineralization was observed in glass ionomer group followed by compomer group. The least evidence of remineralization was observed in composite resin group. 3. Microhardness values of carious site was lower than control site, but Microhardness values of caries site at form away from filling materials in group II, III, IV was significantly higher than the other area. Based on the above results, compomer could be considered as one of the very attractive restorative materials in the field of pediatric dentistry.

[2015 YEST 4기 활동보고서] 기업의 자율준수역량 강화를 위한 연구

정회민 전략물자관리원 2016 전략물자 focus Vol.- No.13

수종의 구강위생 방법에 따른 인공 초기 우식법랑질의 재석회화에 관한 비교 생체연구

정회민,김용기 단국대학교 치의학연구소 1991 논문집 Vol.3 No.-

With a view to evaluating the effect of topical fluoride application in vivo, enamel slabs taken from artificial carious lesion produced by Hydroxyethylcellulose system were mounted in acrylic mandibular removalbe appliances and worn by 4 male subjects for two weeks. Control subjects brushed 4 times a day with non-fluoridated dentifrice. Experimental subjects also brushed 4 times a day but wash MFP dentifrice(G2), plus 0.05% NaF mouthrinsing(G3) or with MFP dentifrice plus 0.05% NaF mouthrinsing. After performing different oral hygiene regimen, surface morphology and histological profile in depth along with Ca, P content in layers were studies using SEM, polarizing light microscope, EPMA, EDX and WDX. The results were as follows ; 1. Remineralized lesion in all groups showed smoother and less porous surface than original carious enamel lesion. 2. Under polarizing light microscope, artificial carious lesions showed typical subsurface demineralization; The lesion body showed positive birefringence, and the inner sound enamel and intact surface layer showed negative birefringence. When compared to the original lesions, remineralized artificial carious lesion showed decreased lesion depth with increased thickness of intact surface. This features were more distinct in the case of topical fluoride application groups(group 2, 3, 4). The body of remineralized lesion in group 1, 2 revealed continuous pattern, whereas group 3 and 4 showed interrupted charicter. 3. From Ca & P profile analyzed by WDX, maximum mineral loss of most lesions was shown to be detected at around the area of 80㎛ from surface roughly. The intergroup rank of remineralizing rate based on WDX data in descending order was group 4, 3, 2 and 1.

Activator를 이용한 하악 전돌증 환자의 치료증례

박희승,정향숙,정회민 大韓小兒齒科學會 1989 大韓小兒齒科學會誌 Vol.16 No.2

Activator는 1936년 Andresen과 Haupl에 의해 만들어진 장치로 저작근을 활발히 하거나, 그 기능력을 변화시키는 기능적 악교정법에 쓰이는 장치이다. 역사적 배경을 살펴보면, 1879년 Kings-ley는 하악골이 과도하게 후방위치 되어있는 환자에게 처음으로 "Jumping the bite"의 개념을 소개했다. 이어 1902년 Pierre Robin은 glossoptosis와 심한 Mandibular retrognathism을 가진 환자에게 "Monobloc"이란 appliance를 사용하여 효과를 거두었음을 발표하였다.

단조공정 설계자를 위한 단조 시뮬레이터 AFDEX

정회민 (사)한국CDE학회 1999 한국CAD/CAM학회학회지 Vol.5 No.1

부분적 무치증 소아환자의 증례보고

사우경,김용기,정회민 大韓小兒齒科學會 1991 大韓小兒齒科學會誌 Vol.18 No.2

Partial anodontia associated with Ectodermal Dysplasia, may be inherited as a sex-linked recessive characteristic. The size of the primary teeth that are present may be normal or reduced. The anterior teeth are often conical, which is one of the characteristic of oligodontia associated with an Ectodermal Dysplasia. Children with a large number of missing primary teeth can have partial dentures constructed at an early age which have been shown to improve their masticatory function and nutritional states. A ?? year-old male with Ectodermal Dysplasia showing oligodontia and a number of abnormal shaped primary teeth was treated by using anterior strip/open-faced stainless steel crowns, posterior casted metal crowns and removable acrylic partial dentures on upper/lower arches in order to rehabilitate functional and esthetic problems.

주조 공정해석 시스템 z - CAsT

정회민 대한기계학회 2006 기계저널 Vol.46 No.9

《상한론(傷寒論)》 태음병(太陰病) 제강(提綱)을 침구학적(鍼灸學的) 분증(分證) 및 분경(分經)의 운용방법(運用方法)에 관(關)한 연구(硏究)

정회민,윤종화,Jeong, Hoe-min,Yoon, Jong-hwa 대한침구의학회 2004 대한침구의학회지 Vol.21 No.6

The following study was undertaken in order to seek the acupuncture operation method of $\ll$Sang Han Lun(傷寒論)$\gg$ Liu-Jing-Bian-Zheng(六經辯證). Based on the documents quoted in $\ll$Sang Hang Za Bing Lun Xu Wen(傷寒雜病論 序文)$\gg$ of "Zhang, Zhong-Jing(張仲景)", the relativity of the theory of Jing-Mai(經脈) and Liu-Jing-Bian-Zheng of convalescence, and from the Liu-Jing-Bing(六經病), the origin and implication that caused Tai- Yin-Bing(太陰病) to form was studied on the basis of acupuncture medicine publications and the commentary writing of $\ll$Sang Han Lun$\gg$. As a result of the foregoing study, the author has written the following acupuncture operation on the basis of a summarized Tai-Yin-Bing for $\ll$Sang Han Lun$\gg$ Liu-Jing-Bian-Zheng. Results : $\ll$Sang Han Lun$\gg$ Liu-Jing-Bian-Zheng has succeeded and was developed based on Liu-Jing-Fen-Zheng(六經分證) of $\ll$Su Wen Re Lun(素問 熱論)$\gg$. In addition, the summary of Liu-Jing-Bing became the general principle of Fen-Jing(分經) and Ding-Zheng(定證) that may be applicable to Fenghan(風寒), Wenre(溫熱), Lili(疫려) and Zabing(雜病). 2. Most commentators of $\ll$Sang Han Lun$\gg$ in the Song, Ming and Ching Dynasties of $\ll$Sang Han Lun$\gg$ interpreted the Tai-Yang-Bing in physiological and pathological aspects of Rong-Wei(榮衛) as the disease of the spleen meridian. 3. From the Liu-Jing-Bing of $\ll$Sang Han Lun$\gg$, the region of acupuncture treatment of Tai-Yang-Bing is treated with the needle from the point of view of Bing-Zheng-Lun-Zhi(辨證論治) with the basis of the important region of acupuncture of the spleen meridian.

흉상 환조 가공을 위한 전용 CAM 시스템 개발

정회민,박준철,정연찬 대한산업공학회 2002 산업공학 Vol.15 No.2

《상한론(傷寒論)》태음병(太陰病) 제강을 <<傷寒論>> 太陰病 提綱을 鍼灸學的 分證 및 分經의 運用方法에 關한 硏究

정회민,윤종화 대한침구의학회 2004 대한침구의학회지 Vol.29 No.5

The following study was undertaken in order to seek the acupuncture operation method of <<Sang Han Lun(傷寒論)>> Liu-Jing-Bian-Zheng(六經辯證). Based on the documents quoted in <<Sang Hang Za Bing Lun · Xu Wen(傷寒雜病論 · 序文)>> of "Zhang, Zhong-Jing(張仲景)", the relativity of the theory of Jing-Mai(經脈) and Liu-Jing-Bian-Zheng of convalescence, and from the Liu-Jing-Bing(六經病), the origin and implication that caused Tai-Yin-Bing(太陰病) to form was studied on the basis of acupuncture medicine publications and the commentary writing of <<Sang Han Lun>>. As a result of the foregoing study, the author has written the following acupuncture operation on the basis of a summarized Tai-Yin-Bing for <<Sang Han Lun>> Liu-Jing-Bian-Zheng. The results are as follows: <<Sang Han Lun>> Liu-Jing-Bian-Zheng has succeeded and was developed based on Liu-Jing-Fen-Zheng(六經分證) of <<Su Wen · Re Lun(素問 · 熱論)>>. In addition, the summary of Liu-Jing-Bing became the general principle of Fen-Jing(分經) and Ding-Zheng(定證) that may be applicable to Fenghan(風寒), Wenre(溫熱), Lili(疫癘) and Zabing(雜病). 2. Most commentators of <<Sang Han Lun>> in the Song, Ming and Ching Dynasties of <<Sang Han Lun>> interpreted the Tai-Yang-Bing in physiological and pathological aspects of Rong-Wei(榮衛) as the disease of the spleen meridian. 3. From the Liu-Jing-Bing of <<Sang Han Lun>>, the region of acupuncture treatment of Tai-Yang-Bing is treated with the needle from the point of view of Bing-Zheng-Lun-Zhi(辨證論治) with the basis of the important region of acupuncture of the spleen meridian.