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US 5,368,483 AGranted
Device-for fixing a dental prosthesis to a jaw bone
AssigneeInstitut Straumann AG
InventorsFranz Sutter, Ulrich Mundwiler
Life of this patent
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AssigneeInstitut Straumann AG
InventorsFranz Sutter, Ulrich Mundwiler
Estimating the term…
The device for fixing a dental prosthesis has a base which can be inserted into a jaw bone, an abutment and a shell. The base has a hole with a mouth at its end face, with an internal thread and with an extension and has a conical annular surface enclosing the mouth of the hole. The abutment has a thread part which passes through the shell in the assembled device and is screwed into the internal thread of the base, and an outer part located outside the base and serving for holding a dental prosthesis. In the assembled device, the shell fits into the extension of the hole and rests with a conical outer surface firmly against a conical inner surface of the base. Furthermore, the outer part of the abutment rests with a conical stop surface firmly against the annular surface of the base. In the assembled device, the abutment is connected to the base in a stable manner and covers its end face without leaving gaps.
A device for fixing a dental prosthesis to a jaw bone, having a base intended for insertion into a hole in the jaw bone and an abutment which can be connected to the base and is intended for holding the dental prosthesis outside the jaw bone, the base having an end face, a hole with a mouth located at the end face, with an internal thread and with an extension widening from the internal thread to the end face and bordered at least partly by a conical inner surface, and having an annular surface enclosing the mouth of the hole, and the abutment possessing an inner part which is intended for being received in the hole of the base and has an external thread intended for screwing to the internal thread of the base, and an outer part nondetachably connected to the inner part and intended for extending outside the base, wherein a shell with an axial through-hole and with a conical outer surface intended to rest against the conical inner surface of the base is present, wherein the inner part of the abutment can be screwed through the hole with the internal thread of the base, and wherein the outer part of the abutment has a stop surface tapering inward away from the inner part and intended to rest against the annular surface of the base.
A device for fixing a dental prosthesis to a jaw bone having a hole, the device comprising:
A device for fixing a dental prosthesis to a jaw bone, having a base intended for insertion into a hole in the jaw bone and an abutment which can be connected to the base and is intended for holding the dental prosthesis outside the jaw bone, the base having an end face, a hole with a mouth located at the end face, with an internal thread and with an extension widening from the internal thread to the end face and bordered at least partly by a conical inner surface, and having an annular surface enclosing the mouth of the hole, and the abutment possessing an inner part which is intended for being received in the hole of the base and has an external thread intended for screwing to the internal thread of the base, and an outer part intended for extending outside the base, wherein a shell with an axial through-hole and with a conical outer surface intended to rest against the conical inner surface of the base is present, wherein each of the base, the abutment, and the shell is formed as a one-piece member, wherein the inner part of the abutment can be screwed through the hole with the internal thread of the base, and wherein the outer part of the abutment has a stop surface tapering inward away from the inner part and intended to rest against the annular surface of the base.
A device for fixing a dental prosthesis to a jaw bone, having a base intended for insertion into a hole in the jaw bone and an abutment which can be connected to the base and is intended for holding the dental prosthesis outside the jaw bone, the base having an end face, a hole with a mouth located at the end face, with an internal thread and with an extension widening from the internal thread to the end face and being bordered at least partly by a conical inner surface, and having an annular surface enclosing the mouth of the hole, and the abutment possessing an inner part which is intended for being received in the hole of the base and has an external thread intended for screwing to the internal thread of the base and an outer part nondetachably connected to the inner part and intended for extending outside the base, wherein a shell with an axial through-hole and with a conical outer surface intended to rest against the conical inner surface of the base is present, wherein a means intended for urging the shell against the inner conical surface of the extension is provided, wherein the inner part of the abutment can be screwed through the hole with the internal thread of the base, and wherein the outer part of the abutment has a stop surface tapering inward away from the inner and intended to rest against the annular surface of the base.
A device for fixing a dental prosthesis to a jaw bone, having a base intended for insertion into a hole in the jaw bone and an abutment which can be connected to the base and is intended for holding the dental prosthesis outside the jaw bone, the base having an end face, a hole with a mouth located at the end face, with an internal thread and with an extension widening from said internal thread to the end face and bordered at least partly by a conical inner surface, and having an annular surface enclosing the mouth of the hole, and the abutment possessing an inner part which is intended for being received in the hole of the base and has an external thread intended for screwing to the internal thread of the base and an outer part nondetachably connected to the inner part and intended for extending outside the base, wherein a shell with an axial through-hole and with a conical outer surface intended to rest against the conical inner surface of the base is present, wherein the inner part of the abutment can be screwed through the hole with the internal thread of the base, wherein the outer part of the abutment has a stop surface tapering inward away from the inner part and intended to rest against the annular surface of the base, and wherein the hole of the shell is provided, at least over a part of its length, with an internal thread which can be screwed with the external thread of the internal part of the abutment.
Dependencies are inferred from the claim text.