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타이타늄 표면처리 방법이 흡착된 BSA의 용출 특성에 미치는 영향
김형용(Hyung-Yong Kim),안지해(Ji-Hae An),최해림(Hae-Rim Choi),박영준(Yeong-Joon Park),송호준(Ho-Jun Song) 대한치과재료학회 2011 대한치과재료학회지 Vol.38 No.4
In this study, titanium specimens with various surface conditions were fabricated using microarc oxidation (MAO) and hydrothermal (HT) treatment techniques and the effects of titanium surface characteristics on the release characteristics of bovine serum albumin (BSA) adsorbed on the surface were investigated. The MAO treated group (MAO), the MAO and HT treated groups using alkaline solution (MAO-HT), P-ion containing alkaline solution (MAO-HT-P), and Ca-ion containing alkaline solution (MAO-HT-Ca) were prepared. MAO treated specimens showed the smooth porous surface. However, hydrothermally treated specimens had newly formed nano-structures on porous surface, and their surface characteristics were changed by the chemical compositions of hydrothermal solutions. MAO and HT treated specimens had much lower contact angle that is to have high hydrophilicity compared with MAO group. As a result of evaluating releasing characteristics and the final release quantities of BSA from MAO, MAO-HT, MAO-HT-P, and MAO-HT-Ca groups after immersing in BSA solution, MAO specimens had the highest value, and MAO-HT, MAO-HT-Ca showed similar values next, and MAO-HT-P specimens showed the lowest final release quantity. BSAs were released rapidly within 24 hours for MAO-HT-P and MAO-HT-Ca groups. However, MAO group showed a slower release characteristics of BSA compared with other groups.
신용각(Yong Kag Shin),박현중(Hyun Joong Park),김형용(Hyung Yong Kim),정찬우(Chan Woo Jeong),고덕영(Duk Young Go),한재희(Jae Hee Han) 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.2
Uterine perforation is a serious complication in users of intrauterine devices for contraception. Authors encountered one case of displacement of Copper-T IVD into urinary blpossibly due to uterine perforation on insertion of the Copper-T IUD in a 28 year old 1-multipara, who experienced normal intrauterine pregnancy in the circumstances. This patient was in silent, asymptomatic condition and underwent cesarean section. And Copper-T IUD was removed under the cystotomy. So we report one case with brief review of literatures