Document Detail

In vitro corrosion of dental amalgams with different Cu content.
MedLine Citation:
PMID:  272727     Owner:  NLM     Status:  MEDLINE    
Both Cu amalgam and Sn-containing Ag amalgam alloys with Cu contents ranging from 2 to 30% were used in the investigation. The amalgams were placed in artificial saliva and the content of the dissolved Cu was determined after 1 month. The amalgam remained in the saliva for another 5 months. After the amalgams were removed from the solution, metallographic and microprobe examinations were made. The Cu amalgam released about 10 times more Cu to the artificial saliva than any of the other amalgams. The dispersion type amalgams showed a relatively large dissolution of Cu, while a smaller release was found from amalgam made of powder with one composition. The phases that appeared to be corroded first were gamma2 and Cu-Sn phases. In dispersion type amalgams the gamma phase appeared to be attacked. Most of the corrosion products remained inside the amalgam and were identified to be tin oxide chlorides.
S Espevik
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Scandinavian journal of dental research     Volume:  85     ISSN:  0029-845X     ISO Abbreviation:  Scand J Dent Res     Publication Date:  1977 Nov 
Date Detail:
Created Date:  1978-04-17     Completed Date:  1978-04-17     Revised Date:  2000-12-18    
Medline Journal Info:
Nlm Unique ID:  0270023     Medline TA:  Scand J Dent Res     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  631-6     Citation Subset:  D; IM    
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MeSH Terms
Copper* / analysis
Dental Amalgam / standards*
Saliva / analysis
Silver / analysis
Tin / analysis
Reg. No./Substance:
7440-22-4/Silver; 7440-31-5/Tin; 7440-50-8/Copper; 8049-85-2/Dental Amalgam

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