Orthodontic devices for segmental distalization in a patient are provided. The orthodontic device includes an elongated central arm; a distal part comprising a distal base surface adapted for attachment to a lingual surface of a molar, wherein the distal part is located at a distal end of the central arm. The device also includes a mesial part comprising a mesial base surface adapted for attachment to a lingual surface of a premolar, wherein the mesial part is located at a mesial end of the central arm. The mesial part and/or distal part comprising a first retention element for retention of a first end of an elastic element. The central arm is shaped to substantially follow a lingual side of a set of teeth. The present disclosure further relates to orthodontic kits and to methods for mounting orthodontic devices and to methods for treatment of malocclusions.