Endosseous one-piece screw-type dental implants
Externally-threaded endosseous dental implants that include the structure of an implant body and an abutment/head also include, between the head portion and the body portion, a beveled shoulder portion that extends downwardly and outwardly from the head portion.
1 . An externally-threaded endosseous dental implant comprising:
a tapered head portion at its proximal end, said head portion tapering downwardly to a beveled shoulder portion, said shoulder portion tapering downwardly and outwardly from said head portion to an externally-threaded body portion.
2 . The endosseous dental implant of claim 1 wherein said tapered head portion includes at least one flat area adapted to engage an implant placement tool.
3 . The endosseous dental implant of claim 1 wherein said tapered head portion includes at least one vertical groove adapted to engage an implant placement tool.
4 . The endosseous dental implant of claim 1 or claim 2 wherein said body portion is straight or tapered and includes external single-lead or multiple-lead threads.
5 . The endosseous dental implant of claim 1 or claim 2 or claim 3 wherein said beveled shoulder includes a distally-positioned cylindrical portion, or a distally-positioned downwardly, inwardly angled portion, or a downwardly, outwardly angled portion.
6 . The endosseous dental implant of claim 1 or claim 2 or claim 3 wherein said tapered head portion includes an internal passage comprising internal wrench-engaging surfaces extending distally from the top of said implant, internal threads or both.
7 . The endosseous dental implant of claim 6 wherein said internal passage is at least partially threaded.
8 . The endosseous dental implant of claim 4 further comprising, on the external surface of said implant, one or more inwardly-extending indentations below the top of said implant, said one or more indentations having size and shape suitable to engage projections on a transfer cap that fits over said implant.