Mercury release from dental amalgam after treatment with 10% car bamide peroxide in vitro

Ilan Rotstein*, Hatice Dogan, Yael Avron, Hagai Shemesh, Doron Steinberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Objectives. The effect of 10% carbamide peroxide on mercury release from dental amalgams was assessed in vitro by using a cold-vapor atomic absorption Mercury Analyzer System. Study design. Samples of 4 commercial brands of dental amalgam, Megaloy (Dentsply/Caulk, Milford, Del), Mega+ (CFPM, Aulnaye, France), Nongama 2 (Silmet, Or Yehuda, Israel), and Valiant Ph.D. (Dentsply/Caulk, Milford, Del), were treated for 48 hours with 10% carbamide peroxide and compared with samples treated with phosphate buffer. Results. Amalgam specimens exposed for 48 hours to 10% carbamide peroxide showed significantly higher concentrations of mercury in solution as compared with specimens treated with phosphate buffer (P < .001). Megaloy and Valiant Ph.D. yielded significantly higher mercury concentrations in solution than Mega+ and Nongama 2 (P < .001). Mega+ yielded significantly higher mercury concentrations in solution than Nongama 2 (P < .05). No significant differences were found in mercury concentrations in solution between Megaloy and Valiant Ph.D. Conclusions. Treatment with 10% carbamide peroxide bleaching agents caused an increase in mercury release from amalgam restorations, possibly increasing exposure of patients to its adverse effects. Amalgam brands differed in the amounts of mercury release after bleaching with carbamide peroxide.

Original languageAmerican English
Pages (from-to)216-219
Number of pages4
JournalOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
Volume89
Issue number2
DOIs
StatePublished - 2000

Bibliographical note

Funding Information:
Supported in part by a grant from the Joining Research Fund of the Hebrew University-Hadassah Faculty of Dental Medicine, founded by the Alpha Omega Fraternity, and the Hadassah Medical Organization.

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