Dentistry – Prosthodontics – Holding or positioning denture in mouth
Patent
1995-03-17
1997-02-18
O'Connor, Cary E.
Dentistry
Prosthodontics
Holding or positioning denture in mouth
4332011, 433214, A61C 800
Patent
active
056036167
ABSTRACT:
A dental implant that is either pre-formed having a general conical taper to reflect the average taper of a single rooted tooth, or custom manufactured to reflect a major portion of the root structure of a tooth that has been extracted. A plurality of retention elements are arranged on the distal half of the implant to provide immediate macro retention of the implant in the alveolar bone. The retention elements are tapered both longitudinally and circumferentially and can be biased relative to the longitudinal axis of the implant to provide a screw like mechanism when the implant is rotated in the alveolar bone. The retention elements are spaced about the implant surface to maximize stagger. This reduces the sheer forces generated on the alveolar bone during function and ensures that the implant remains tightly seated for an extended period of time. The custom implant impression method uses a thin impermeable membrane to line a recess in the alveolar bone prior to obtaining an impression to inhibit pieces of the impression material from entering the recess and surrounding area that may cause infections.
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patent: 3717932 (1973-02-01), Brainin
patent: 3919773 (1975-11-01), Freeman
patent: 4187608 (1980-02-01), Nyce
patent: 5004422 (1991-04-01), Propper
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