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.
3. Bugatti Veyron Super Sport â 268 Mph. The Bugatti Veyron held the Guinness World Record for being the fastest supercar in the world for years and was the first ever production car to exceed the 250 mph mark. However, after facing a few technical difficulties, its title was taken over by the Koenigsegg.