The sound of dental chairs

Dental equipment manufacturer Yoshida Seisakusho KK has developed a dental patient chair equipped with a speaker that enables bone conduction of sound.

The bone conduction device is located in the chair's headrest, enabling patients to enjoy music of their choice while being treated, without listening to the drilling and other noises.

From Nikkei Net, via The Raw Feed.

Bone-related: Sanyo's silent mobile phone that transmits the incoming call through the user's own skull, the Jawbone, the body as a sound installation.