Piezosurgery is an ultrasound device, which has been employing since 1988 for bone cutting procedures. Piezoelettric bone surgery is associated with several advantages; soft tissue protection, optimal visibility in the surgical field, decreased blood loss, less vibration and noise, protection of tooth structure. We wanted to highlight hownoble structures, such as nerves and arteries, are preserved by this device. Piezosurgery's scope is becoming more and more wide, including oral and maxillofacial surgery, otorhinolaryngology, neurosurgery, ophthalmology, traumatology and orthopaedics. We extended its use to craniofacial paediatric malformations, orthognatic surgery, TMJ surgery and oncology, observing shortening of the post-operative swelling. There is more comfort for the patients. In conclusion, piezosurgery represents a promising device, which is widening its field of application in bone surgery.