An orthodontic bracket , comprising: a main body , having an archwire slot (P) configured to receive an archwire (L); a cover , hingedly connected to the main body and movable between an open position for exposing the archwire slot (P) and a closed position for covering the archwire slot (P), wherein the main body has a hole (G), and the cover has a hinge pin confined within the hole (G), wherein the hole (G) is configured to allow translational movement of the hinge pin along a long axis of the hole (G), and allow rotation of the hinge pin about a pin axis of the hinge pin ; and an elastic spring element (SE), disposed in the main body and coupled to the cover and the main body , configured to generate a force to drive movement of the cover into the open position; wherein the archwire slot (P) has a base wall (PW1) at an end of the archwire slot (P), a pair of side walls (PW2, PW2') connected to the base wall (PW1), and a curved redirecting wall (PW3) connected to and inclined to one of the pair of side walls (PW2, PW2'), wherein the curved redirecting wall (PW3) is closer to the cover than the connected side wall (PW2), and a surface of the curved redirecting wall (PW3) facing the other one of the pair of side walls (PW2') is concave, wherein the pair of side walls (PW2, PW2') is configured to guide the archwire (L) to move in a first exit direction (DE1), and the curved redirecting wall (PW3) is configured to guide the archwire (L) to move from the first exit direction (DE1) to a second exit direction (DE2), wherein the first exit direction (DE1) is not parallel to the second exit direction (DE2). a main body , having an archwire slot (P) configured to receive an archwire (L); a cover , hingedly connected to the main body and movable between an open position for exposing the archwire slot (P) and a closed position for covering the archwire slot (P), wherein the main body has a hole (G), and the cover has a hinge pin confined within the hole (G), wherein the hole (G) is configured to allow translational movement of the hinge pin along a long axis of the hole (G), and allow rotation of the hinge pin about a pin axis of the hinge pin ; and an elastic spring element (SE), disposed in the main body and coupled to the cover and the main body , configured to generate a force to drive movement of the cover into the open position; wherein the archwire slot (P) has a base wall (PW1) at an end of the archwire slot (P), a pair of side walls (PW2, PW2') connected to the base wall (PW1), and a curved redirecting wall (PW3) connected to and inclined to one of the pair of side walls (PW2, PW2'), wherein the curved redirecting wall (PW3) is closer to the cover than the connected side wall (PW2), and a surface of the curved redirecting wall (PW3) facing the other one of the pair of side walls (PW2') is concave, wherein the pair of side walls (PW2, PW2') is configured to guide the archwire (L) to move in a first exit direction (DE1), and the curved redirecting wall (PW3) is configured to guide the archwire (L) to move from the first exit direction (DE1) to a second exit direction (DE2), wherein the first exit direction (DE1) is not parallel to the second exit direction (DE2). <EOS>