| 主权项 |
1. A removable artificial tooth, comprising:
an internal crown, which is adapted to mount to a natural tooth and having a surface forming a projection block; an external crown, which comprises a spring clip fixed therein to correspond, in position, to the projection block, the spring clip comprising: a first spring arm, which has an end forming a first fixed end and an opposite end forming a first movable end, wherein the first fixed end is fixed inside an external crown; and a second spring arm, which has an end forming a second fixed end and an opposite end forming a second movable end, wherein the second fixed end is fixed inside the external crown; wherein the first movable end and the second movable end are spaced from each other by a distance that is less than width of the projection block, whereby when the external crown is pressed down to fit over the internal crown, the first movable end and the second movable end are expanded outward by the projection block to allow the projection block to get into the space between the first spring arm and the second spring arm; whereby when the external crown is fit in a direction from upper side to lower side to the internal crown, the spring clip is expanded by the projection block and after the projection block completely passes through the first movable end and the second movable end, the spring clip retains and constrains the position of the projection block, wherein the external crown forms therein a groove for receiving the spring clip, the groove having a spacing that is less than width of adjacent face of the internal crown, wherein the internal crown uses a projection block to connect to another internal crown. |
