http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김상훈,백병주,김재곤,양연미,박정렬 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.3
본 연구에서는 구강 환경과 유사한 조건에서 불소방출성을 보이는 콤포짓트 레진계 수복재의 내구성과 불소방출성을 조사하기 위해 4종의 콤포머와 1종의 불소방출성 콤포짓트 레진을 실험재료로 선택하고 5℃와 55℃ 수중에서의 열순환 처리 후의 인장강도, 열순환 처리 후 칫솔에 대한 작용력 1.5N으로 100,000회 칫솔질을 시행하였을 때의 표면조도 및 불소치약 칫솔질 후 37℃ 수중에서의 불소이온 용출 양상을 조사한 결과 다음과 같은 결론을 얻었다. 1. 인장강도는 TC(Tetric^(ⓡ) Ceram)군에서 32.3 MPa, CF(Compoglass F)군에서 16.8 MPa이고, TC군과 DF(Dyract^(ⓡ) flow)군 및 CF군에서 유의한 차이를 보였다(P<0.05). 2. 칫솔질 마모시험 후의 표면조도 Ra는 TC군에서 0.287, FT(F2000)군에서 1.516이고, FT군과 나머지 시험군 사이에 유의한 차이를 보였다(P<0.05). 3. 칫솔질 마모시험 후의 표면에서는 필러의 돌출과 탈락 양상이 관찰되었다. 4. 불소치약 Perio Alpine Herb로 칫솔질 한 후 콤포머는 초기에 높은 용출을 보인 후 시간이 경과하면서 용출량이 감소하는 양상을 보였지만, 불소방출성 콤포짓트 레진의 TC군에서는 초기단계부터 낮으면서도 지속적인 용출을 보였다. 5. 불소치약 Perio Alpine Herb로 칫솔질 한 후 1시간이 경과하였을 때의 불소이온 용출량은 CF군에서 2.064μg/cm², TC군에서 0.1119μg/cm²이고, CF군의 용출량이 나머지 시험군에 비해 유의하게 높은 값을 보였다(P<0.05). The objectives of this study were to examine the properties of fluoride-releasing resin composite restorative materials. Four commercially available compomer materials (Compoglass F: CF, Dyract^(ⓡ) AP: DA. Dyract^(ⓡ) flow:DF, F2000: FT) and one fluoride-releasing composite resin (Tetric^(ⓡ) Ceram: TC) were selected as experimental materials. Rectangular-shaped tensile test specimens were fabricated in a teflon mold giving 5 mm in gauge length and 2 mm in thickness. Disk-shaped specimens were fabricated in the split teflon mold with diameter of 15mm and thickness of 1 mm. After curing for an hour, specimens were immersed in deionized water at 37℃±1℃ for 30 days. All specimens were thermocycled for 10,000 cycles with 15 seconds of dwelling time in each 5℃ and 55℃ water baths. Toothbrush abrasion test was conducted under a load of 1.5 N and the abraded surfaces were examined with surface roughness tester (SV-3000, Mitutoyo Co, Japan) and SEM (JSM-5800, JEOL, Japan). Fluoride recharging was done by toothbrushing for 3 min. using a fluoride toothpaste (Perio Alpine Herb, LG Household & Health Care, Korea). The results obtained were summarized as follows; 1. The highest tensile strength value of 32.3 MPa was observed in TC group and the lowest value of 16.8 MPa was observed in CF group. The tensile strength of TC group was significantly higher than those of CF and DF groups (P<0.05). 2. The lowest Ra value of 0.287 was observed in TC group and the highest value of 1.516 was observed in FT group. The Ra value of FT group was significantly higher than other groups (P<0.05). 3. The abraded surfaces revealed the increase of surface roughness due to the protrusion and missing of filler particles. 4. The release of fluoride of compomers after tooth brushing by Perio Alpine Herb was initially large and then followed by small and continuously. But it remains small and constant in fluoride-releasing composite resin of TC. 5. The highest value of fluoride release after toothbrushing by Perio Alpine Herb was 2.064 μg/cm² in CF group and the lowest value was 0.119μg/cm² in TC group. The amount of fluoride release of CF group was significantly higher than other groups (P<0.05).
단클론항체를 이용한 타액 내 Streptococcus mutans 수준의 측정
김추성,김재곤,양연미,백병주,이경열,김미아,임수민 大韓小兒齒科學會 2010 大韓小兒齒科學會誌 Vol.37 No.2
Streptococcus mutans는 구강 내에 상존하는 치아우식증의 주요 원인균으로서 치면의 피막에 부착 후 glucan을 형성하여 세균의 군락을 이루며, 외부로부터 공급된 자당대사를 통하여 유기산을 생성함으로써 법랑질을 탈회시킨다. 치아우식 활성도의 평가를 위한 단클론항체를 이용한 방법은 진료실에서 빠른 시간 내에 간편하게 타액에 존재하는 Streptococcus mutans의 정량분석이 가능한 방법이다. 이 연구는 3세에서 6세 사이의 어린이 15명을 대상으로 자극성 타액을 채취하여 시판 중인 단클론항체를 이용한 Salivacheck Mutans, strip을 이용한 Dentocult-SM 그리고 MSB배지 배양법으로서 타액 내 Streptococcus mutans를 측정한 후 그 값을 우식경험치아수와 비교하여 상관관계를 알아보았다. Saliva-check Mutans를 이용한 방법은 Dentocult-SM과 MSB배지법과 통계학적으로 유의한 상관관계를 보였으나 (p<0.05), MSB배지법은 어린이의 우식경험치아수와 통계학적으로 유의한 결과를 나타내지 않았다 (p=0.34). Streptococcus mutans, one of the major causal agents of dental caries, is component of the dental plaque. It produces various organic acids such as lactic acid which is the end-product of glycolysis, and this leads to dental caries. A new system using species-specific monoclonal antibodies was developed to detect Streptococcus mutans in saliva. The system quickly detects salivary Streptococcus mutans in 30min and classifies the result into two levels. The purpose of this study was to investigate correlation between monoclonal antibody-based detecting system and selective medium-based detecting methods. Children's deft indices were also compared with Streptococcus mutans counts in MSB agar plate. Subjects consisted of 15 children in the age of 3 to 6 years. They were assigned to three groups: Group Ⅰ (deft index = 3), Group Ⅱ (deft index ≤ 3), Group Ⅲ (deft index ≥ 4). The results are as follows : 1. The rate of children with positive response was 13.3% and with negative response was 86.7% in the result of Saliva-check Mutans test kit. 2. There was a positive correlation between monoclonal antibody-based detecting system and selective medium-based detecting methods (p<0.05). 3. Streptococcus mutans counts in MSB agar plate were irrelevant to deft of children(p=0.34).
Effect of Compost Application Level on Seedling Growth of Panax ginseng C. A. Meyer
Yeon, Byeong-Yeol,Hyun, Dong-Yun,Hyun, Geun-Su,Park, Chun-Geun,Kim, Tae-Soo,Cha, Seon-Woo,Lee, Sung-Woo The Korean Society of Medicinal Crop Science 2007 韓國藥用作物學會誌 Vol.15 No.2
Good quality seedlings produced in the seedbed of Yangjik, traditional seedling cultivation, is one of the most important factors in determining the yield and quality of $4{\sim}6-year-old$ ginseng. This study was carried out to substitute Yacto, traditional organic fertilizer, for economical compost in the cultivation of seedling by fertilizing relatively little amount of compost into seedbed soil. Bulk density and solid phase were decreased in physical properties of seedbed soil, while air phase and porosity were increased by more addition of compost. When the amount of applied compost in seedbed soil was above $8{\ell}$ per Kan, the contents of nutrient were exceeded the range of optimal standard for ginseng cultivation. Chlorophyll content and stem length were increased by more addition of compost, while the length and the width of leaves showed the highest value at the application level of $8{\ell}$ per Kan. Heat injury was also increased distinctly above the application level of $8{\ell}$ per Kan. The number of first grade seedlings and usable seedlings, and fresh root weight per plant showed the peak at application level of $8{\ell}$ per Kan, respectively. Fertilizing the compost of $8{\ell}$ per Kan into seedbed soil was the optimal amount for producing the good quality seedlings.
Effect of Compost Application Level on Seedling Growth of Panax ginseng C. A. Meyer
Byeong-Yeol Yeon,Dong-Yun Hyun,Geun-Su Hyun,Chun-Geun Park,Tae-Soo Kim,Seon-Woo Cha,Sung-Woo Lee 한국약용작물학회 2007 한국약용작물학회지 Vol.15 No.2
Good quality seedlings produced in the seedbed of Yangjik, traditional seedling cultivation, is one of the most important factors in determining the yield and quality of 4~6-year-old ginseng. This study was carried out to substitute Yacto, traditional organic fertilizer, for economical compost in the cultivation of seedling by fertilizing relatively little amount of compost into seedbed soil. Bulk density and solid phase were decreased in physical properties of seedbed soil, while air phase and porosity were increased by more addition of compost. When the amount of applied compost in seedbed soil was above 8l per Kan, the contents of nutrient were exceeded the range of optimal standard for ginseng cultivation. Chlorophyll content and stem length were increased by more addition of compost, while the length and the width of leaves showed the highest value at the application level of 8l per Kan. Heat injury was also increased distinctly above the application level of 8l per Kan. The number of first grade seedlings and usable seedlings, and fresh root weight per plant showed the peak at application level of 8l per Kan, respectively. Fertilizing the compost of 8l per Kan into seedbed soil was the optimal amount for producing the good quality seedlings.