A removable orthodontic device includes an anchorage cap segment, a moving cap segment, a pair of spring elements, and a guiding wire. The anchorage cap segment is configured to be removably worn on the anterior teeth of a dental arch. The moving cap segment is configured to be removably worn on at least one posterior tooth on one side of the dental arch. The pair of spring elements is disposed between the anchorage and moving cap segments to generate an elastic resilient force to move the moving cap segment relative to the anchorage cap segment. The guiding wire has a U-shaped portion and two rod portions. The U-shaped portion is embedded in and disposed around three sidewalls of the moving cap segment, and the two rod portions are received in guiding channels formed in the buccal and lingual sidewalls of the anchorage cap segment to guide the movement of the moving cap segment.一種可摘式牙齒矯正裝置，包括錨固牙套段部、移動牙套段部、一對彈簧元件以及引導線。錨固牙套段部以可摘方式配戴在牙弓的前牙上。移動牙套段部以可摘方式配戴在牙弓的一側的至少一後牙上。彈簧元件設置在錨固牙套段部與移動牙套段部之間，用以產生彈性回彈力以相對於錨固牙套段部移動移動牙套段部。引導線具有U形部分及兩個桿部分，其中U形部分係嵌入於並且圍繞移動牙套段部的三個側壁設置，並且桿部分係收容在形成於錨固牙套段部的頰側及舌側側壁內的引導通道中以引導移動牙套段部的移動。
