치과주조용 비귀금속 합금의 금속 용출 수준

Title
치과주조용 비귀금속 합금의 금속 용출 수준
Other Titles
Concentration of elemental ions released from non-precious dental casting alloys
Author(s)
사공준박수철[박수철]
Keywords
non-precious dental casting alloy; metal release; Ni-Cr; Co-Cr
Issue Date
201303
Publisher
대한치과기공학회
Citation
대한치과기공학회지, v.35, no.1, pp.1 - 17
Abstract
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, threeday,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 ,Bellabond-Plus , Starloy-C , and Biosil-F . 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 , 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
URI
http://hdl.handle.net/YU.REPOSITORY/26162
ISSN
1229-3954
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의과대학 > 예방의학교실 > Articles
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