... Cerficate 3.Three mainfuncation:bone,root,clean Woodpecker Ultrasurgery best quality.CEProduct Feature:Three main functions:bone,root,clean.The ... function of bone is mainly used for dental surgery, such as dental extraction, bone grafting, ... periodontic surgery, etc.The function of root is mainly for mechanical ultrasonic treatment, such as periodontic, endodontic and prevention ...