| 摘要 |
The element is adapted to be fitted as an annular band around a tooth and to be secured to a dental appliance to hold the same in position. The fixing element comprises a strip metal element having two end portions, which are adapted to overlap in said annular band, two slide-snap fastener parts which are respectively carried by said end portions and selectively interengageable in a plurality of positions which determine respective diameters of said annular band, and one of the fastener parts including a bracket which is provided with a longitudinal groove for slidably receiving an orthodontic appliance. The bracket carries a clamping device which projects over the longitudinal groove, and is selectively and angularly movable to positions for slidable and clamping engagement with the orthodontic appliance received in the longitudinal groove.
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