Despite of its application difficulties in adult population air-rotor<unk>  (ARS) is a commonly used method to alleviate crowding in the permanent dentition.  <unk>  can be performed
using numerous kinds of rotating instruments, as diamond burs, diamond coated discs and polishing discs.
Stripping
Luminous intensity
Twitching
Strangling
Stretching
Fluorescence
Swelling 
Inclusions