Patent ID: 8491302
Filing Date: 2013-07-23
Classification: A61C

Abstract:
1. A dental implant for attaching therewith an artificial tooth to a jawbone, the dental implant comprising: a finely threaded portion configured for nesting within the entire width of a cortical bone of said jawbone and within a small portion of a cancellous bone of said jawbone, said finely threaded portion having a first number of thread crests per axial distance; and a coarsely threaded portion configured for nesting within said cancellous bone, said coarsely threaded portion having a second number of thread crests per axial distance, lesser than said first number of thread crests per axial distance, said dental implant including a plurality of primary threads running along both said finely threaded portion and said coarsely threaded portion, and one or more secondary threads running along said finely threaded portion at an offset from said primary threads, said offset is based on a number of said one or more secondary threads in said finely threaded portion, wherein the thread crests of the coarsely threaded portion are formed by said plurality of primary threads in the coarsely threaded portion, and the thread crests of the finely threaded portion are formed by the plurality of primary threads and the one or more secondary threads in the finely threaded portion, wherein the primary threads having a constant pitch and a constant major diameter throughout both said finely threaded portion and said coarsely threaded portion, said primary threads comprising a larger thread height in said coarsely threaded portion and a smaller thread height, lesser than said larger thread height, in said finely threaded portion, said primary threads comprising a larger minor diameter in said coarsely threaded portion and a smaller minor diameter, lesser than said larger minor diameter, in said finely threaded portion, wherein the secondary threads have constant pitch, wherein said smaller thread height is between 0.2 millimeter and 0.7 millimeter, wherein said larger thread height is between 1 and 1.4 millimeters, and wherein said constant major diameter is between 3.75 and 4.6 millimeters.