| 摘要 |
A file for working on the interproximal space in orthodontics as well as in conservative treatments and prophylaxis of teeth comprises a tool-holding structure and an abrasive plate, wherein the tool-holding structure is shaped in an arc and provided at the ends with two tubular portions and wherein the abrasive plate is stably fixed at both of its ends to the tubular portions of the tool-holding structure, wherein the tool-holding structure is symmetrical and overmolded on said abrasive plate. A relative device able to be connected to an oscillating handpiece comprises such a file and a shank for the connection to the handpiece, wherein the shank is removably fixed to the file.
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