지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Purpose: This study was to assess the extents of the release of metals from the non-precious alloys used for dental casting by measuring the differences in the extents of the release of metals by types of alloys, pH level and elapsed time. Methods: Uniform-sized specimens(10 each) were prepared according to the Medical Device Standard of the Korea Food and Drug Administration(2010) and International Standard Organization(ISO22674, 2006), using four types of alloys(one type of Ni-Cr and one type of Co-Cr used for fixed prosthesis, and one type of Ni-Cr and one type of Co-Cr used for removable prosthesis). A total of 12 metal-release tests were performed at one-day, three-day, and two-week intervals, for up to 20 weeks. The metal ions were quantified using an Inductively Coupled Plasma-Atomic Emission Spectrometer. Results: The results showed that the extent of corrosion was higher in the ascending order of Jdium-$100^{(R)}$, Bellabond-$Plus^{(R)}$, Starloy-$C^{(R)}$, and Biosil-$F^{(R)}$. The lower the pH and the longer the elapsed time were, the greater the increase in metal corrosion. At pH 2.4, the release of Ni from Jdium-$100^{(R)}$, a Ni-Cr alloy, was up to 15 times greater than the release of Co from the Co-Cr alloy from two weeks over time, indicating that the Ni-Cr alloy is more susceptible to corrosion than the Co-Cr alloy. Conclusion: It is recommended that Co-Cr alloy, which is highly resistant to corrosion, be used for making dental prosthesis with a non-precious alloy for dental casting, and that non-precious alloy prosthesis be designed in such a way as to minimize the area of its oral exposure. For patients with non-precious alloy prostheses, a test of the presence or absence of periodontal tissue inflammation or allergic reaction around the prosthesis should be performed via regular examination, and education on the good management of the prosthesis is needed.
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참고문헌 (43)
참고문헌 신청
Bumgardner JD / 1995 / Cellular Response to Metallic Ions Released from Nickel-Chromium Dental Alloys / J Dent Res 74(8):1521~1527
Bumgardner JD / 1994 / Corrosion and cell culture evaluation of nickel-chromium dental casting alloys / J Appl Biomater 5(3):203~213
Choi YJ / 1999 / Cytotoxicity of dental cast base metal alloys on human oral keratinocytes / J Korean Acad Prosthodont 37(6):717~728
Craig RG / 1990 / Cytotoxicity of experimental casting alloys evaluated by cell culture tests / J Dent Res 69(8):1539~1542
Craig RG / 1983 / Dental materials, properties and manipulation / The C. V. Mosby Company
Bumgardner JD / 1994 / Corrosion and cell culture evaluation of nickel-chromium dental casting alloys / J Appl Biomater 5(3):203~213
Choi YJ / 1999 / Cytotoxicity of dental cast base metal alloys on human oral keratinocytes / J Korean Acad Prosthodont 37(6):717~728
Craig RG / 1990 / Cytotoxicity of experimental casting alloys evaluated by cell culture tests / J Dent Res 69(8):1539~1542
Craig RG / 1983 / Dental materials, properties and manipulation / The C. V. Mosby Company
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