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.
If we analyze records using a serial production bicycle, as opposed to prototype bicycles, the record holder is Markus StÃ¶ckl from Austria. He set a world speed record in 1999 on snow, descending at 187 km/h (116 mph) at Les Arcs. On 14 September 2007, StÃ¶ckl rode an Intense M6 mountainbike down the ski slope of La Parva, Chile, reaching the current record of 210 km/h (130 mph).