| 摘要 |
<p>A cutting blade (1, 40, 40-1, 62) having a pair of razor-sharp cutting edges (9, 10) and adapted to be oscillated back and forth in order to cut through the periodontal ligaments which surround a tooth root of a patient during dental surgery so that the root or a portion of a tooth root can be removed from the patient's jawbone. The cutting blade (e.g., 1) has a connecting shaft (3) at one end by which the blade can be coupled to the driver head (32) of an oscillating dental handpiece (30). Located opposite the connecting shaft (3) is a cutting end (5) having a tissue debris transfer canal (12) at the bottom or inside thereof and a smooth tissue gliding surface (16) at the top or outside. A positioning collar (22) surrounds the connecting shaft (3) to provide to the oral surgeon a visual indication of the alignment of the pair of cutting edges (9, 10) of the cutting blade (1) relative to the tissue to be cut.</p> |
