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논문 기본 정보

자료유형
학술저널
저자정보
김우현 (연세대학교) 이상배 (연세대학교) 이용근 (연세대학교) 김경남 (연세대학교) 김광만 (연세대학교)
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대한치과재료학회 대한치과재료학회지 치과기재학회지 제37권 제1호
발행연도
2010.3
수록면
53 - 59 (7page)

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Titanium and titanium alloys are the most common materials used for dental and biomedical implants, owing to their biocompatibility and favorable mechanical properties. However infection of the region surrounding a implant by pathogenic microorganisms is a significant factor in implant failure. Currently, a number of studies to create antibacterial surfaces of dental implants and biomaterials are being reported and commercially applied. Prevention and control of microbial colonization of implant surfaces is therefore of considerable interest to the biomedical community. One of the solutions, various biodegradable polymeric drug delivery devices have been developed for the sustained release of a variety of drugs. Among them, films as implantable drug delivery systems have gained growing interest in various applications. The purpose of this study was to confirm the release of antibiotics and antibiotic effects of titanium surface which coated with biodegradable polymer and different concentrations of tetracycline. Anodized titanium specimen (diameter 8 ㎜, height 2 ㎜) were coated with poly(lactide) acid solution (1%) containing different concentrations of tetracycline (0.0%: Group Ⅰ, 0.1%:Group Ⅱ, 0.5%:Group Ⅲ, 1.0%: Group Ⅳ). The coated specimen"s surface were observed by scanning electron microscope. For the analysis of drug release, the specimens were inserted in distilled water and then the solution was measured for 3 hours, 6 hours , 12 hours , 1 days, 3 days, 7 days, 14 days u sing the ultraviolet spectrometer. Antimicrobial activity against Staphylococcus aureous was tested with the agar diffusion method. Scanning electron microscope image showed that polymer coating layers fulfilled the titanium surface. The most of tetracycline released within 6 hours and then continued until 2 weeks. Regarding the antibacterial effect for Staphylococcus aureous, the specimens showed inhibitions of the strain with larger zones for the higher tetracycline concentration (Group Ⅰ <Group Ⅱ < Group Ⅲ <Group Ⅳ). Conclusions: The results of this in vitro investigation demonstrated that tetracycline and poly(lactide) acid solution coated titanium specimens exhibited antibacterial effects against Staphylococcus aureous.

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