| 摘要 |
<p>A marking device, designed to mark teeth, to position orthodontic brackets at an optimum level (though it can also be used to mark other things). The invention also relates to a method of marking teeth using the device. The device comprises one or more elongated rectangular metal plates. At each end of each plate is a "leg" that extends downward, with a "foot" covered by plastic. Cylindrical "arms" extend from both sides of each leg at right angles to the plate. Pencil lead holders pass through the arms on each side of the plate, so that the pencil leads extend vertically downward and parallel to the plate. Knobs above the holders can be rotated to move the pencil lead up or down. Near each end of each plate, the distance of the pencil lead from the foot is marked in millimeters. Pencil marks aid in placing the orthodontic brackets.</p> |
