A new hearing aid that transmits sound through a person's teeth has been approved for use in Europe.
The device, called SoundBite, directs sound through the jawbone and into the inner ear. It is placed onto the upper left or right molars and is custom-made for each patient.
The Royal National Institute for Deaf People (RNID) warned that it may not be suitable for everyone with hearing difficulties.
Find out more at the BBC.