The low-energy extracorporal shockwave is a scientifically approved method to activate respectively increase bone-turnover processes especially in orthopedic medicine. The aim of this clinical study is to apply this effect in orthodontic dentistry and evaluate the orthodontic tooth movement respectively miniscrew stability clinically. This randomized clinical study is carried out in orthodontic patients undergoing space closure therapy at the university clinic of dentistry. During this period the tooth movement rate as well as the miniscrew stability are evaluated consecutively chairside.