| 摘要 |
<p>A series of dental implants is proposed, each of which is stepped, the drill diameter for the largest step section of the smaller implant corresponding to the drill diameter for the smaller stepped section of the subsequent larger implant. The invention also relates to a dental implant consisting of a stepped shaft section provided close to the superstructure end with an external engagement surface for fitting said superstructure thereover. A collar, joined to the shaft section, extends around said external engagement surface at some distance therefrom. The internal surface thereof is conically divergent with respect to the axis of the shaft section and part of the superstructure can be placed in a stable manner in the space delimited between the inner surface of the collar and the external engagement surface. <IMAGE></p> |
