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.
The reasons children grind remain unclear. The problem with bruxism, as the habit of grinding and clenching is called, is the wear and tear on your teeth. When you grind your teeth, you can wear away tooth enamel. This can lead to sensitive teeth and tooth decay, and it can also cause damage to expensive dental work. Finally, grinding taxes the muscles and joints of the temporomandibular (jaw).