The purpose of the present invention is to provide a specific wound healing accelerator effective for accelerating heating of wounds particularly of wounds in the oral cavity or a composition which includes the wound healing accelerator. This wound healing accelerator including a specific polyphenol is easy to handl...

A dental treatment device in which attenuation of a laser beam is not liable to occur is provided. This dental treatment device (1) is provided with a vibration unit (2) for vibrating by a vibrator (21) that generates ultrasonic vibrations a chip unit (3) connected to the vibration unit (2) and through which ultraso...