In theory. But grinding teeth, chewing, or even brushing can cause flakes to break away. The biggest risk is actually during installation of the amalgam, partic

In theory. But grinding teeth, chewing, or even brushing can cause flakes to break away. The biggest risk is actually during installation of the amalgam, particularly for dental professionals. The real crux of the issue is that there are safer effective alternatives. So even if we call the risk "low," it is a needless risk. It only a matter of "when" not "if" these filings are against safety regulations.