| 摘要 |
<p>An abutment (26) and method of its use are disclosed for securing dental appliances of other physiological appliances having a wide variety of configurations to an implant (16) mounted in a bony substrate, the abutment (26) including an indexing element means (36) forming an abutment surface (34) surrounding the indexing element (36) and separate threaded attachment for the appliance, either integrally with the implant (16) or on an abutment (26) attachable to the implant (16), the indexing element (36) being formed with a cylindrical taper (40) extending outwardly from the abutment surface (34) and one or more, preferably six, planar facets (42) intersecting the tapered surface adjacent the abutment surface (34) but with portions of the tapered surface (46) intermediate the facets (42) extending substantially toward the abutment surface (34). The tapered surface (40) is preferably in the range of about ten to thirty degrees, more preferably about thirteen to seventeen degrees, relative to an axis of the indexing element (36), the overall axial length of the indexing element (36) preferably being at least about 0.020 inches, more preferably in the range of about 0.030-0.100 inches.</p> |
