| 摘要 |
An edge retractor device for dental surgery suitable for being positioned in an incision of a tissue on a bone, comprising a laminar element, bent according to a reversed-"U" shape, constituted by two free sides and a central side which connects them, with a pair of extending portions being provided adjacent to terminal portions of the free sides of the reversed-"U" portion, which extended portions are orientated perpendicularly to the plane which contains the cross section of the reversed-"U"-shaped portion. |
