| 摘要 |
Disclosed are a screw channel device (50) for a dental superstructure including a screw channel part (51) and implant occlusion parts (52A, B). The screw channel device includes a screw material sheet (54) having a screw hole at a proximal end part. The proximal end part of the screw channel part (51) is a bowl shape, so that it has a space inside and the bottom surface (55) is a convex surface. The screw hole of the screw material sheet (54) is a long ball shape. The implant occlusion parts (52A, B) include collar shape upper implant occlusion part (52B) and collar shape lower implant occlusion part (52A) connected to a dental implant (60). The lower implant occlusion part (52A) has a concave sheet (58), the upper implant occlusion part (52B) has a convex surface (57) of which the diameter is the same as that of the concave sheet (58) of the lower implant occlusion (52A) for the upper implant occlusion part (52B) to form a first set of ball joints (57, 58). To form a second set of ball joints (55, 56), the upper implant occlusion part (52B) has a concave sheet (56) of which the diameter is the same as that of the bottom surface (55) of the screw channel part (51). The two sets of ball joints make the screw channel part (51) be inclined and move toward the central axis of the lower. |
