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하악(下顎) 제1대구치(第一大臼齒)의 맹출과정(萌出過程)에 관(關)한 연구(硏究)
황의강,Whang, Eui-Kang 대한소아치과학회 1976 大韓小兒齒科學會誌 Vol.3 No.1
To study the eruption pattern of the mandibular first permanent molar, the author took 263 cases of Oblique Cephalogram from age 3 to 6 years old children and observed the vertical and mesiodistal directional change and tooth axis change. The following results were obtained.; 1. The eruption pattern of the mandibular first permanenl molar was changed at about 60~66 months or calcification stage IX. 2. At the early stage, the path of eruption of the mandibular first permanent molar directed upward and forward and after calcification stage IX it changed to the direction of upward. 3. The height of the alveolar bone of the upper part of the mandibular first permanent molar was almost equal to that of the interseptal bone of the first and second deciduous molar, but the height showed gradual descent afterwards. 4. At the early stage, the distance from the distal end of the mandibular second deciduous molar to the anterior portion of the ascending ramus was 1.2~1.4 times larger than the mesio-distal diameter of the mandibular first permanent molar, but at the later stage it was enlarged 1.7~1.9 times larger than the mesiodistal diameter of the mandibular first permanent molar.
골격근 근형질세망의 ATP유도 ^45Ca-uptake에 대한 Thapsigargin및 Vanillylnonanamide의 영향
황의강,배소현,홍장희,허강민,김진회,이재흔,석정호 충남대학교 의과대학 지역사회의학연구소 1999 충남의대잡지 Vol.26 No.2
To investigate the effect of thapsigargin(THP) and vanillylnonanamide(VN), derivative of capsaicin, on the ATP-induced ^45Ca-uptake in the sarcoplasmic reticulum(SR) of the skeletal muscle, the SR vesicles were prepared from the back muscle of the rabbit, and ^45Ca-uptake was carried out. The results as follows: ATP-induced ^45Ca-uptake of skeletal muscular SR was significantly increased by 1 mM ATP. It was significantly blocked by 5 μM THP, but slightly decreased by 20 μM VN. The combined effect of THP and VN on the 45Ca-uptake of the SR vesicles was much potentiated than the sum of each effect of them. The above results suggest that the action of VN, being slightly influential to ATP-induced Ca-uptake but potentiating the effect of THP on the Ca-uptake, might be related with direct perturbation of the SR membrane or exposure of the THP-binding site.
黃義康,車文豪 大韓小兒齒科學會 1976 大韓小兒齒科學會誌 Vol.3 No.1
To study the eruption pattern of the mandibular first permanent molar, the author took 263 cases of Oblique Cephalogram from age 3 to 6 years old childen and observed the vertical and mesiodistal directional change and tooth axis change. The following results were obtained.: 1. The eruption pattern of the mandibular first permanent molar was changed at about 60∼66 months or calcification stage Ⅸ. 2. At the early stage, the path of eruption of the mandibular first permanent molar directed upward and forward and after calcification stage Ⅸ it changed to the direction of upward 3. The height of the alveolar bone of the upper part of the mandibular first permanent molar was almost equal to that of the interseptal bone of the first and second deciduous molar, but the height showed gradual descent afterwards. 4. At the early stage, the distance from the distal end of the mandibular second deciduous molar to the anterior portion of the ascending ramus was 1.2∼1.4 times larger than the mesio-distal diameter of the mandibular first permanent molar, but at the later stage it was enlarged 1.7∼1.9 times larger than the mesiodistal diameter of the mandibular first permanent molar.
邊綠漏出防止를 위한 塡塞材 [NUVA-SEAL]의 利用에 關한 實驗的 考察
黃義康,車文豪 大韓小兒齒科學會 1976 大韓小兒齒科學會誌 Vol.3 No.1
The present in vitro study was undertaken to evaluate the initial marginal sealing ability of the sealant known as Nuva-Seal to seal cavity margins when used in conjunction with Adaptic and Nuva-Fil restorative materials. The results were as follows; 1. Where each Adaptic and Nuva-Fil restorative material was filled, showed the greatest degree of marginal leakage. 2. Where Adaptic and Nuva-Fil restorative materials were filled after acid etched surrrounding enamel surface adjoining the cavity margins, showed some degree of marginal leakage. 3. Where the Nuva-Seal was applied after acid etching a) to the cavity walls and the peripheral enamel surface adjoining the cavity margins, b) only to the surrounding enamel surface adjoining the cavity margins, and c) over the restorations and the peripheral enamel surface, showed complete absence of marginal leakage of Adaptic and Nuva-Fil restorative materials. 4. Where the Nuva-Seal was applied with the same methods as above, and restorations were placed on thermal stress also showed complete absence of marginal leakage of Adaptic and Nuva-Fil restorative materials.
黃義康,朴仁子,李亘浩 大韓小兒齒科學會 1974 大韓小兒齒科學會誌 Vol.1 No.1
505 girls were studied on the eruption of second molar clinically. 1. Eruption rate was 9.04% earlier in mandible than in maxilla. 2. Average age of eruption was 12.53 years old in maxilla and 11.73 in mandible. 3. There is no significant right and left arch, 4. Generally, period of eruption in Korean was slightly retarded as compared to that of foreigners.