A periodontist is a dentist who specializes in the prevention, diagnosis, and treatment of periodontal disease, and in the placement of dental implants. Periodontists are also experts in the treatment of oral inflammation.
Ground speed. Ground speed is the horizontal speed of an aircraft relative to the ground. An aircraft heading vertically would have a ground speed of zero. Information displayed to passengers through the entertainment system often gives the aircraft ground speed rather than airspeed.
All that power also makes the Charger SRT Hellcat the quickest and fastest sedan in the world. Dodge quotes a quarter mile time of 11.0 seconds flat with the standard Pirelli P Zero tires, and a top speed of 204 mph. The 0-60 mph time will be in the mid threes and the 0-100-0 mph time will be less than 13 seconds.