17 research outputs found

    Bํ˜• ๊ฐ„์—ผ ๋ฐ”์ด๋Ÿฌ์Šค์— ์˜ํ•œ NF-kB ํ™œ์„ฑํ™”๋ฅผ ๋ณด์—ฌ์ฃผ๋Š” microarray analysis์— ๋Œ€ํ•œ ์—ฐ๊ตฌ

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    Thesis(master`s)--์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :์ƒ๋ช…๊ณผํ•™๋ถ€,2005.Maste

    Social construction of 'Atopy' and motherhood

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    ํ•™์œ„๋…ผ๋ฌธ (์„์‚ฌ)-- ์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› : ์‚ฌํšŒํ•™๊ณผ, 2011.2. ์ •์ง„์„ฑ.Maste

    The nanoleakage patterns of experimental hydrophobic adhesives after load cycling

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    ๋ณธ ์—ฐ๊ตฌ์˜ ๋ชฉ์ ์€ ๋‘ ๊ฐ€์ง€ ์‹คํ—˜์šฉ ์†Œ์ˆ˜์„ฑ ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ์™€ ์ „ํ†ต์ ์ธ 3-step ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ์˜ nanoleakage ์–‘์ƒ์„ load cycling ์ „, ํ›„์— ๋น„๊ตํ•˜์—ฌ ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ์˜ ๋‚ด๊ตฌ์„ฑ์„ ์˜ˆ์ธกํ•ด ๋ณด๊ณ ์ž ํ•˜๋Š” ๊ฒƒ์ด๋‹ค. ๋‘ ๊ฐ€์ง€ ์‹คํ—˜์šฉ ์†Œ์ˆ˜์„ฑ ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ ์ฆ‰, ์—ํƒ„์„ ํฌํ•จ ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ, ๋ฉ”ํƒ„์„ ํฌํ•จ ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ๋ฅผ ๋งŒ๋“ค์—ˆ๋‹ค. ๋Œ€๊ตฌ์น˜ 30๊ฐœ์˜ ์น˜๊ด€๋ถ€ 3๋ถ„์˜ 1์„ ์ ˆ๋‹จํ•˜๊ณ  ์ž„์˜๋กœ 3๊ตฐ์œผ๋กœ ๋‚˜๋ˆ„์–ด ๊ฐ๊ฐ Scotchbond Multi-Purpose (3M ESPE, St. Paul, MN, USA), ์—ํƒ„์˜ฌ ํฌํ•จ ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ ๋ฐ ๋ฉ”ํƒ„์„ ํฌํ•จ ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ์ƒ์•„์งˆ ์ ‘์ฐฉ ํ›„, ๋ณตํ•ฉ๋ ˆ์ง„์œผ๋กœ ์น˜๊ด€๋ถ€๋ฅผ ์ˆ˜๋ณตํ•˜์˜€๋‹ค. ๊ฐ๊ฐ์˜ ์ ‘์ฐฉ ์‹œ์Šคํ…œ์„ Load cycling ์—ฌ๋ถ€์— ๋”ฐ๋ผ ๋‘ ๊ตฐ์œผ๋กœ ๋‚˜๋ˆ„๊ณ  ๊ฐ๊ฐ์˜ ์น˜์•„๋ฅผ ์ ‘์ฐฉ ๊ณ„๋ฉด์— ์ˆ˜์ง์œผ๋กœ, ์•ฝ 2.0 mm์˜ ๋‘๊ป˜๊ฐ€ ๋˜๋„๋ก ์ ˆ๋‹จํ•˜์—ฌ ์น˜์•„๋งˆ๋‹ค 2๊ฐœ์˜ ์‹œํŽธ์„ ์–ป์–ด ๊ฐ ๊ตฐ ๋‹น10๊ฐœ์˜ ์‹œํŽธ์„ ์–ป์—ˆ๋‹ค. ์‹œํŽธ์„ 50 % ammoniacal silver nitrate๋ฅผ ์ด์šฉํ•˜์—ฌ ์—ผ์ƒ‰ํ•œ ํ›„ ์ฃผ์‚ฌ์ „์žํ˜„๋ฏธ๊ฒฝ์„ ์ด์šฉํ•˜์—ฌ ํ˜ผ์„ฑ์ธต์˜ nanoleakage๋ฅผ ๊ด€์ฐฐํ•˜์˜€๋‹ค. ์€ ์นจ์ฐฉ์˜ ๋ถ„ํฌ๋Š” image analysis software (Scion Image Beta 4.03, Scion Corp., Frederick, MD, USA)๋ฅผ ์ด์šฉํ•˜์—ฌ gray value๋กœ ๊ณ„์‚ฐํ•˜์˜€๊ณ  ์ด ์›๋ถ„์‚ฐ ๋ถ„์„๋ฒ•์œผ๋กœ ํ†ต๊ณ„์ฒ˜๋ฆฌ ํ•˜์˜€๋‹ค. 3์ข…์˜ ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ์—์„œ ๋ชจ๋‘ nanoleakage๊ฐ€ ๊ด€์ฐฐ๋˜์—ˆ์œผ๋‚˜, ์—ํƒ„์˜ฌ ํฌํ•จ ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ์™€ ๋ฉ”ํƒ„์„ ํฌํ•จ ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ์—์„œ Scotchbond Multi-Purpose ๋ณด๋‹ค ์ ์€ ์–‘์˜ nanoleakage ๊ฐ€ ๊ด€์ฐฐ๋˜์—ˆ๋‹ค (p < .0001). ๊ฐ๊ฐ์˜ ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ์—์„œ load cycling์— ๋”ฐ๋ฅธ nanoleakage ์–‘์ƒ์˜ ๋ณ€ํ™”๋Š” ๊ด€์ฐฐ๋˜์ง€ ์•Š์•˜๋‹ค. ์ด์ƒ์˜ ๊ฒฐ๊ณผ์—์„œ ์นœ์ˆ˜์„ฑ๊ธฐ๋ฅผ ์ค„์ด๊ณ  ์†Œ์ˆ˜์„ฑ๊ธฐ๋ฅผ ๊ทน๋Œ€ํ™” ํ•œ ์‹คํ—˜์šฉ ์ƒ์•„์งˆ ์ ‘์ฐฉ์ œ๊ฐ€ ์ ‘์ฐฉ ๊ณ„๋ฉด์˜ ๋‚ด๊ตฌ์„ฑ ํ–ฅ์ƒ์— ๋„์›€์„ ์ค„ ์ˆ˜ ์žˆ์„ ๊ฒƒ์œผ๋กœ ์‚ฌ๋ฃŒ๋œ๋‹ค. The purpose of this study was: (1) to compare nanoleakage patterns of a conventional 3-step etch and rinse adhesive system and two experimental hydrophobic adhesive systems and (2) to investigate the change of the nanoleakage patterns after load cycling. Two kinds of hydrophobic experimental adhesives, ethanol containing adhesive (EA) and methanol containing adhesive (MA), were prepared. Thirty extracted human molars were embedded in resin blocks and occlusal thirds of the crowns were removed. The polished dentin surfaces were etched with a 35 % phosphoric acid etching gel and rinsed with water. Scotchbond Multi-Purpose (MP), EA and MA were used for bonding procedure. Z-250 composite resin was built-up on the adhesive-treated surfaces. Five teeth of each dentin adhesive group were subjected to mechanical load cycling. The teeth were sectioned into 2 mm thick slabs and then stained with 50 % ammoniacal silver nitrate. Ten specimens for each group were examined under scanning electron microscope in backscattering electron mode. All photographs were analyzed using image analysis software. Three regions of each specimen were used for evaluation of the silver uptake within the hybrid layer. The area of silver deposition was calculated and expressed in gray value. Data were statistically analyzed by two-way ANOVA and post-hoc testing of multiple comparisons was done with the Scheffe's test. Silver particles were observed in all the groups. However, silver particles were more sparsely distributed in the EA group and the MA group than in the MP group (p < .0001). There were no changes in nanoleakage patterns after load cycling
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