| 摘要 |
The present invention relates to a dental root canal filling material for endodontic treatment, characterised in that it comprises a central portion (101, 112, 112', 122) and a peripheral portion (103, 111, 121 ), the central portion (101, 112, 112', 122) having a higher radiopacity than the peripheral portion (103, 111, 121). The said peripheral portion of the material is thus optimised for visualisation using a three dimensional imaging technique while the central portion provides a "signature" that is visible using a traditional two dimensional imaging technique. |
