是負相關。
“The AAE noted research published in 2013 concluded that individuals who underwent multiple endodontic treatments actually experienced a 45 percent reduced risk of cancer. ”
文章源自美國著名的打假網站 snopes.com,鏈接:http://www.snopes.com/medical/toxins/rootcanal.asp
其中45%的數據源自JAMA的這篇論文:http://archotol.jamanetwork.com/article.aspx?articleid=1752294