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.
Bruxism or teeth grinding can cause problems with teeth, jaw pain, earache and headaches. Bruxism is often caused by stress, and in many cases it happens during the night while a person is asleep. Up to one in 10 adults and children in the UK experience teeth grinding, with the condition being most common between 25 and 44.