| 摘要 |
The invention concerns a root-canal instrument (1) such as a root-canal reamer, comprising a working section (10) including three flutes (20, 21, 22) forming three cutting lips (30, 31, 32). The invention is characterised in that the three cutting lips (30, 31, 32) are located at the apices of an isosceles triangle. The invention further concerns various methods for making the inventive root-canal instrument (1). |
