| 摘要 |
A toothbrush with a weighted base 1 such that the toothbrush will self right into a vertical or substantially vertical position when placed on a flat surface. The base has a convex curved surface which is attached to a neck portion 3 which supports the brush head or bristles 4. The brush head may be replaceable, while the shape of it may be conventional or round. The toothbrush may be manual or electrically powered. |
