It accumulates negative ions in the atmosphere to blast out 10000- volt lightning bolts.
Teeth grinding is harmful for several reasons. First, it causes damage to the teeth by wearing the enamel off the biting surface of the tooth and along the gumline. This can lead to tooth sensitivity. Second, the forces generated from grinding can cause cracks to form in the teeth and can cause the teeth to break.
Teeth grinding can create numerous problems such as local muscular pain, headaches, loss of tooth structure, gum recession, loose teeth, shortening of teeth, tooth sensitivity, cracked and broken teeth, damage to the bone structure of the jaw joint with temporomandibular joint syndrome (TMJ syndrome), and even facial changes.