For The Orthodontic Anchor Screw Made Of The Same Materials As Those Of The Marketed Products Is It Necessary To Conduct The Fatigue Test And Study?

As an implantable medical device, the orthodontic anchor screw is implanted into jaw bone to resist the reaction force generated during tooth movement and assist the orthodontic activity of teeth. Unlike dental implants, which perform masticatory function and endure masticatory force for a long time, anchor screw only endures the force generated in the orthodontic process and is not a permanently implanted device. Therefore, the fatigue test may not be repeated for the orthodontic anchor screw made of the same materials as those of the marketed products.