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.
List of fastest production motorcycles. The fastest production motorcycle for a given year is the unmodified motorcycle with the highest tested top speed that was manufactured in series and available for purchase by the general public. Modified or specially produced motorcycles are a different class, motorcycle land-speed record.