Patent ID: 6290500
Filing Date: 2001-09-18
Classification: A61C

Abstract:
An abutment and crown for use with an implant having a first end and a second end and a longitudinal axis passing through the first end, the implant having a bore formed through the first end and extending along the longitudinal axis, the abutment comprising a central portion between a post portion and a head portion, the post portion having a longitudinal axis and being receivable in the bore of the dental implant, the central portion formed with a smoothly curved outer surface extending from a relatively large diameter progressively down to a smaller diameter where the center portion joins the post portion, the head portion having a selected outer configuration and having a longitudinal axis and having a smaller outer periphery than the periphery of the relatively large diameter of the central portion, a shelf being formed between the head portion and the central portion, the shelf forming a selected angle with a plane perpendicular to the longitudinal axis of the head portion to facilitate forming of a joint with a crown received on the head portion compatible with a human body, the crown having any one of various emergence profiles and comprising an internal sleeve having a head seat with a configuration closely matching the selected outer configuration of the head portion of the abutment, the crown having an outer portion attached to the sleeve, the outer portion of the crown having a selected outer configuration, the outer portion of the crown and the sleeve each having a lower surface formed with an angle matching that of the shelf of the abutment, the lower surface of the outer portion of the crown and the sleeve each conforming to and received on the shelf of the abutment.