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US 12,390,309 B2Granted
Abutment system and dental methods
AssigneeNobel Biocare Services AG
InventorsLars Jorneus, Eric Rompen, Eric Van Dooren, Bernard Touati
Life of this patent
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Abstract
The present application relates to an abutment system (12) and its use. The abutment system (12) comprises: a soft tissue level abutment part (10) adapted to be attached to a bone level dental implant (40) by means of an abutment screw (56), wherein the abutment system is adapted to selectively support both a cement-retained final restoration (66) and a screw-retained prosthetic component (68; 70). The present application also relates to dental methods.
Claims19
An abutment system, comprising:
- an abutment screw comprising a screw head and a shaft extending apically from the screw head, the screw head having a first outer diameter, the shaft having a second outer diameter smaller than the first outer diameter of the screw head;
- a soft tissue level abutment part adapted to be attached to a bone level dental implant by the abutment screw;
- and
- a further screw adapted to attach a component to a coronal portion of the soft tissue level abutment part,
- wherein the abutment screw has an apical externally threaded portion on the shaft configured to engage the bone level dental implant, wherein the abutment screw further has a coronally internally threaded portion arranged in the screw head and not extending into the shaft,
- wherein the soft tissue level abutment part comprises a soft tissue collar having a coronal flat circumferential top surface, the coronal flat circumferential top surface having an outer perimeter and an inner circular perimeter, the inner circular perimeter accommodating at least one indexing element configured to prevent rotation of the component attached to the coronal portion of the soft tissue level abutment part, wherein the at least one indexing element of the inner circular perimeter of the coronal flat circumferential top surface does not extend to the outer perimeter of the coronal flat circumferential top surface,
- wherein the soft tissue level abutment part comprises an external surface comprising a conical portion adapted to abut against an internal connection surface of the bone level dental implant such that a coronally facing surface of the bone level dental implant is exposed to soft tissue when the conical portion of the soft tissue level abutment part forms an effective seal with the internal connection surface of the bone level dental implant, and
- wherein the further screw has an apical externally threaded portion configured to engage with the coronally internally threaded portion of the abutment screw such that the apical externally threaded portion of the further screw sits at least partially within the soft tissue level abutment part.
5 more elements
Dependencies are inferred from the claim text.