Many patients think that for restoring of the dentition and bite defects it is enough to fix braces. However, such correction is sometimes not enough. First of all you need to correct defects of the jaw. Usually, the orthodontists in Ohio recommend in such cases the use of the device of Derichsweiler. It is not removable orthodontic appliances, functions of that include increasing of the upper jaw. Typically, the duration of use of this device ranges from several weeks to two months. Orthodontist constantly monitors the process. The patient, have to self-tighten the screw usually several turns per day.