A dental bracket comprises a base, a cover, and an adjusting seat. The base includes a reference diameter perpendicular to the horizontal plane. The cover is detachably fixed to the base. The base and the cover define a space connecting to a hole formed on the cover. The adjusting seat includes a body in the space and a convex body extending from the body towards the cover. The convex body has a top surface outside the space, and a groove formed on the top surface and outside the space. when the body rotates a predetermined angle about its own axis, the groove correspondingly changes the angle relative to the reference diameter.一種牙齒矯正裝置,供矯正牙齒用的固定線材設置以牽引待矯正牙齒至正確位置,包含一基座、一座蓋,及一調整座,該基座包括一與水平面垂直的基準徑,該座蓋可脫離地與該基座卡固而與該基座共同圈圍出一容室,且形成一與該容室連通的開口,該調整座包括一設置於該容室的座本體,及一自該座本體朝該座蓋方向延伸的凸體,該凸體具有一凸出該開口的頂面,及一自該頂面形成且位於該開口外的卡槽,該座本體可繞自身軸線轉動預定角度地與該基座相卡置不動而使該卡槽對應地改變相對於該基座之基準徑的夾角。2‧‧‧基座21‧‧‧基壁22‧‧‧固定塊23‧‧‧卡掣孔231‧‧‧中央孔部232‧‧‧定位孔部3‧‧‧座蓋300‧‧‧開口31‧‧‧蓋壁32‧‧‧周壁34‧‧‧卡勾件4‧‧‧調整座41‧‧‧座本體411‧‧‧基部412‧‧‧定位塊部42‧‧‧凸體421‧‧‧頂面422‧‧‧卡槽
