An oral health charity said parents and schools should be aware of the problem, which can also affect adults who are stressed and anxious.
Teeth-grinding can lead to headaches, worn-down teeth and disrupted sleep – and it appears to be on the rise, experts say.
The sound of grinding has been compared to the noise from a circular saw.
A study published in the Journal of Oral Rehabilitation found that 13 to 15-year-olds who experienced verbal bullying at school were nearly four times as likely to suffer from teeth-grinding at night, or sleep bruxism, than other teenagers.
To view the full story, please click here.
Prevent poor oral health by limiting breastfeeding – read more here.