Dental implant
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United States of America Patent
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Nov 15, 2016
Grant Date -
Jul 11, 2013
app pub date -
Jul 9, 2012
filing date -
Aug 2, 2011
priority date (Note) -
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Abstract
A dental implant includes a male threading part and an implantation torque increasing part from the tip side. The male threading part includes multiple threading parts that have the same lead but different pitches, with the pitch increasing toward the tip side. The outer diameter of the male threading part is constant or increases toward the implantation torque increasing part. The implantation torque increasing part includes thread crests that have a different lead from the lead of the male threading part or a projecting row that is continuous circumferentially. In cross-section, a contour line connecting tops of the thread crests of the threading part that is adjacent to the implantation torque increasing part is a straight line, and the tops of the thread crests or the top of the projecting row of the implantation torque increasing part are located on an extension line of the contour line.
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