THE ROOT CANAL PROCEDURE, STEP BY STEP. 1  An opening is drilled through the biting surface to allow access to the tooth pulp. 2  Tooth roots are cleaned and disinfected using special needles and rinsing substances (e.g., sodium hypochlorite, EDTA, and chlorhexidine).
In 1973 the Widowmaker 7 was confirmed as the fastest motorcycle on Earth by Guinness Book of World Records, recording an 8.68-second 1/4 mile run at 172 mph. Obviously it's been dethroned since then, but it's still a cool piece of two-wheeled history. Most Popular.
Greatest Motorcycle In History Goes Electric. The worldâs greatest motorcycle isnât a work of art, nor is it a speed demon of any sort. But the 50cc kick-star Honda Super Cub â with just four horsepower and a top speed of 50 mph â is the single most successful vehicle in the history of internal combustion. Hondaâs sold more than 60 million of them, and after all that time the Cub is going electric.