An orthodontic system includes a dental appliance and an auxiliary arrangement unit. The dental appliance includes a main body defining a receiving space for receiving at least a portion of a dentition of a user therein. The main body is formed with a main projection projecting outwardly away from the receiving space. The auxiliary arrangement unit includes an attaching member to be bonded to a tooth of the dentition, and a restraining member interconnecting the main projection and the attaching member for moving the tooth toward the main projection.一種牙齒矯正系統,包含一隱形矯正牙套及一輔助調整單元。該矯正牙套包含一界定一容置空間的本體,該容置空間用以容納一齒列。該本體具有一朝遠離該容置空間突出之主突出部。該輔助調整單元包括一設置於該齒列之一牙齒上的定位件,及至少一勾設於該定位件及該隱形矯正牙套之主突出部上而使該牙齒朝該主突出部之方向移動的束縛件。31‧‧‧本體3110‧‧‧保留空間311‧‧‧容置空間312‧‧‧第一側壁313‧‧‧第二側壁6‧‧‧齒列61‧‧‧牙齒
