Within a few weeks your regular Apex dentist will replace your temporary filling with a new permanent one. After root canal therapy is my tooth dead? No, because the surround structures (PDL, bone, and gum tissue) are alive. The image to the right is a tooth with root canal therapy completed.
Jehovah's Witnesses had its origins in the Bible Student movement, which developed in the United States in the 1870s among followers of Christian Restorationist minister Charles Taze Russell. Bible Student missionaries were sent to England in 1881 and the first overseas branch was opened in London in 1900.
(They lost roughly three-quarters of the movement between 1925 and 1928, then suffered huge losses after 1975, when the end didn't come as they had implied over and over again, said Jim Penton, an ex-Witness who writes entries on Jehovah's Witnesses for the Encyclopedia Americana.)