Ceramic two-piece dental abutment
AssigneeImplant Innovations, Inc.
InventorsDan Paul Rogers, Gale R. Brown, Daniel Y. Sullivan
Life of this patent
Estimating the term…
Abstract
A two-piece abutment system is disclosed. The first part includes a tapering inner surface which is part of a bore extending entirely through the first part. The first part includes a socket for mating with a boss or post on a dental implant. The elongated second part includes a threaded stem for engaging a threaded bore with a dental implant and a post which extends above the first part. The second part extends through the bore of the first part and is screwed into the implant. As the second part is screwed into the implant, a tapering external surface on the post of the second part frictionally locks with the tapering inner surface of the first part. The first part has a metallic core which is surrounded by a ceramic outer portion.
Claims47
An abutment for supporting a dental prosthesis, said abutment being attached to a dental implant that is integrated with living jawbone, said dental implant including a threaded bore and a boss protruding away from an upper portion thereof, said abutment comprising:
- a first part constructed of a metallic core and a ceramic outer piece positioned around said metallic core and attached thereto, said first part including a bore extending therethrough along a central axis and a socket for receiving said boss of said implant, a portion of said bore being defined by a tapered surface that tapers inwardly at a predetermined angle with respect to said central axis in a direction toward said socket, said first part including an annular surface for supporting said dental prosthesis, a portion of said first part above said annular surface decreasing in cross-section in the direction of an upper end of said first part;
- and
- a second part for extending through said bore of said first part, said second part including a threaded stem for engaging said threaded bore of said implant and a post protruding above said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle for engaging said tapered surface of said first part.
An abutment for attaching to a dental implant embedded in living jawbone and having an upper surface with a fitting, said abutment comprising:
- a tubular first part with a metallic core and a ceramic outer portion surrounding said metallic core, said tubular first part having a bore extending therethrough along a central axis, said bore including a tapered portion, said first part including a shoulder for supporting a dental prosthesis positioned below an upper surface of said first part such that said dental prosthesis fits over at least a portion of said first part;
- and
- an elongated second part for extending through said bore of said first part, said second part including a threaded stem for engaging a threaded bore of said implant and a post protruding above said first part, said post portion for laterally supporting said dental prosthesis, said elongated second part including a tapered outer surface for engaging said tapered portion of said bore.
An abutment for attaching to a dental implant embedded in living jawbone and having an upper surface with a fitting, said abutment comprising:
- a tubular first part with a metallic core and a ceramic outer portion surrounding said metallic core, said tubular first part having a bore extending therethrough along a central axis, said bore including a tapered portion tapering at an angle between about 5.degree. and about 20.degree., said metallic core having a lower flanged portion for engaging said upper end of said implant;
- and
- an elongated part extending through said bore of said tubular first part and having a threaded stem for engaging a threaded bore of said implant and a post protruding above said first part, said elongated part including a tapered outer surface that tapers at said angle for forming a locking taper with said tubular first part.
An abutment for supporting a dental prosthesis, said abutment being attached to a dental implant that is integrated with living jawbone, said dental implant including a threaded bore and a boss protruding away from an upper portion thereof, said abutment comprising:
- a first part constructed of a metallic core and a ceramic outer piece positioned around said metallic core and attached thereto, said first part including a bore extending therethrough along a central axis and a socket for receiving said boss of said implant, a portion of said bore being defined by a tapered surface that tapers inwardly at a predetermined angle with respect to said central axis in a direction toward said socket, said metallic core includes at least two separate metallic pieces;
- and
- a second part for extending through said bore of said first part, said second part including a threaded stem for engaging said threaded bore of said implant and a post protruding above said first part, said second part including an outer surface with a tapered portion that tapers at an angle substantially the same as said predetermined angle for engaging said tapered surface of said first part.
An abutment for attaching to a dental implant embedded in living jawbone and having an upper surface with a fitting, said abutment comprising:
- a tubular first part with a metallic core and a ceramic outer portion surrounding said metallic core, said tubular first part having a bore extending therethrough along a central axis, said bore including a tapered portion, said first part including a shoulder for supporting a dental prosthesis, said metallic core includes at least two separate metallic pieces;
- and
- an elongated second part for extending through said bore of said first part, said second part including a threaded stem for engaging a threaded bore of said implant and a post protruding above said first part, said post portion for supporting said dental prosthesis, said elongated second part including a tapered outer surface for engaging said tapered portion of said bore.
An abutment for attaching to a dental implant embedded in living jawbone and having an upper surface with a fitting, said abutment comprising:
- a tubular first part with a metallic core and a ceramic outer portion surrounding said metallic core, said tubular first part having a bore extending therethrough along a central axis, said bore including a tapered portion tapering at an angle between about 5.degree. and about 20.degree., said metallic core having a lower flanged portion for engaging said upper end of said implant;
- an elongated part extending through said bore of said tubular first part and having a threaded stem for engaging a threaded bore of said implant and a post protruding above said first part, said elongated part including a tapered outer surface that tapers at said angle for forming a locking taper with said tubular first part;
- and
- a lubricant at an interface of said tapered outer surface and said tapered portion of said bore.
An abutment for supporting a dental prosthesis, said abutment being attached to a dental implant that is integrated with living jawbone, said dental implant including a threaded bore and a boss protruding away from an upper portion thereof, said abutment comprising:
- a first part constructed of a metallic core and a ceramic outer piece positioned around said metallic core and attached thereto, said first part including a bore extending therethrough along a central axis and a socket for receiving said boss of said implant, said metallic core including at least two separate metallic pieces;
- and
- a second part for extending through said bore of said first part and holding said first part on said implant, said second part including a lower portion for threadably engaging said threaded bore of said implant and a head portion for engaging said first part in said bore.
Dependencies are inferred from the claim text.