It looks like same happens with dental amalgam fillings  too (which also contains mercury):<p><a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=Bw94F94FZqA" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=Bw94F94FZqA</a><p>Most say it&#x27;s safe (the FDA too) and that video just shows water vapor because mercury vapor wouldn&#x27;t rise like that due to it&#x27;s weight, but I&#x27;m not sure what to believe.<p><a href="http:&#x2F;&#x2F;quackfiles.blogspot.hu&#x2F;2005&#x2F;04&#x2F;smoking-teeth-truth-gets-smoked-out.html" rel="nofollow">http:&#x2F;&#x2F;quackfiles.blogspot.hu&#x2F;2005&#x2F;04&#x2F;smoking-teeth-truth-ge...</a><p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Dental_amalgam_controversy" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Dental_amalgam_controversy</a>