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US 2010/0167239 A1Published application
Impression device with impression-taking cap for dental prosthesis
AssigneeAnthogyr
InventorBenoit Guillard
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AssigneeAnthogyr
InventorBenoit Guillard
Estimating the term…
An impression device includes an impression taking-cap (6) designed for adapting on an implant (1) or the like along one prosthetic bearing surface formed by a mount (2) and an annular peripheral shoulder (4). The impression taking-cap (6) includes an annular bearing surface (1) bearing on the annular peripheral shoulder (4) when placed in the mouth. The impression taking-cap (6) is maintained in this position by a retaining peg (13) extending axially from the bottom surface (8) in an inner chamber (9) and capable of axial engagement by friction in a retaining female geometry (2b) provided at the end of the mount (2). It is thus possible to insure an axial fixation of the impression taking-cap (6) on the implant (1) or the like and thus a very reliable impression taking of the annular peripheral shoulder (4), which results in the peripheral tightness of the prosthesis on the implant (1).
Impression-taking cap (6) designed to engage with a prosthetic abutment (24) of an implant (1) or implant (1)-prosthetic component (5) assembly, the prosthetic abutment (24) having a mount (2) designed to fit into a cavity in a dental prosthesis and being limited at its base by an annular peripheral shoulder (4), the mount (2) having a female retention geometry (2b) at its end, the impression-taking cap (6) having a peripheral wall (7) and a distal end wall (8) defining a blind inner chamber (9) which opens through a proximal orifice (10), the inner chamber (9) being able to accommodate the mount (2) and the annular peripheral shoulder (4) of the prosthetic abutment (24), the impression-taking cap (6) having an annular bearing facet (11) around the proximal orifice (10) and being shaped so as to abut axially against the annular peripheral shoulder (4) of the prosthetic abutment (24), and the impression-taking cap comprising a retention pin (13) extending axially within the inner chamber (9) from the end wall (8) and being able to engage axially with friction in the female retention geometry (2b) at the end of the mount (2), wherein the retention pin (13) comprises a male retention section (2d) having an outer peripheral surface in the shape of a cylinder of revolution capable of axial engagement in a female retention section (2c) of corresponding cylindrical surface belonging to the female retention geometry (2b).
Dental implant (1) suitable for engagement with an impression-taking cap (6) and having a prosthetic abutment (24) for attachment of a dental prosthesis, the prosthetic abutment (24) having a mount (2) designed to fit into a cavity in the prosthesis and being limited at its base by an annular peripheral shoulder (4), the impression-taking cap (6) having a peripheral wall (7) and a distal end wall (8) defining a blind inner chamber (9) which opens through a proximal orifice (10), the inner chamber (9) being able to accommodate the mount (2) and the annular peripheral shoulder (4) of the prosthetic abutment (24), and the dental implant comprising, at its distal end, a female retention geometry (2b) suitable for accommodating axially with friction a retention pin (13) provided in the inner chamber (9) of the impression-taking cap (6), the female retention geometry (2b) comprising a female retention section (2c) with a cylindrical inside surface (20b) suitable for accommodating by axial engagement a male retention section (2d) of the retention pin (13).
Prosthetic component (5) suitable for forming with an implant (1) a prosthetic abutment (24) having a mount (2) designed to fit into a cavity in the prosthesis and being limited at its base by an annular peripheral shoulder (4), the whole being able to engage with an impression-taking cap (6) having a peripheral wall (7) and a distal end wall (8) defining a blind inner chamber (9) which opens through a proximal orifice (10), the inner chamber (9) being able to accommodate the mount (2) and the annular peripheral shoulder (4) of the prosthetic abutment (24), and the prosthetic component (5) comprising, at its distal end, a female geometry of retention (2b) able to accommodate axially with friction a retention pin (13) provided in the inner chamber (9) of the impression-taking cap (6), wherein the female retention geometry (2b) comprising a female retention section (2c) having a cylindrical inside surface (20b) able to accommodate by axial engagement a male retention section (2d) of the retention pin (13).
Analog casting component (1) able to reproduce the exact shape of a prosthetic abutment (24) with a mount (2) and an annular peripheral shoulder (4) in a laboratory model, the analog casting component (1) comprising an insertion body (1a) able to be overmolded by a casting material and surmounted by a protuberance having the outside shape of the mount (2) and limited at its base by a shoulder having the relative position and outside shape of the annular peripheral shoulder (4) of the prosthetic abutment (24), the distal part of the protuberance comprising a female retention geometry (2b) able to accommodate axially with friction a retention pin (13) provided in the inner chamber (9) of an impression-taking cap (6), the female retention geometry (2b) comprising a female retention section (2c) with a cylindrical inside surface (20b) able to accommodate by axial engagement a male retention section (2d) of the retention pin (13).
Dependencies are inferred from the claim text.