Implant with high primary stability and accelerated secondary stability

1 . A dental implant for implantation into bone tissue having an exterior surface comprising:

an elongated body extending from a first end to a second end and having an upper portion configured to receive a prosthesis, a lower portion for being submerged in the bone tissue, and an outer surface;

at least one groove extending along at least a portion of the elongate body; and

at least one thread on the outer surface making a plurality of turns around the elongated body between the lower portion and the upper portion, the at least one thread including a crest positioned between opposing roots and opposing flanks,

wherein, throughout each of the plurality of turns, the opposing roots and an adjacent segment of each of the opposing flanks have a first roughened surface having a first roughness, the crest has a second roughened surface having a second roughness, and each of the flanks has a respective transition region including a portion of gradually decreasing roughness in a direction of the crest,

a length of the first roughened surface and the respective transition region near the first end is different than the length of the first roughened surface and the respective transition region near the second end; and

wherein the first roughness is greater than the second roughness.

2 . The dental implant of claim 1 , wherein the portion of the transition region transitions from the first roughness to the second roughness, wherein the elongated body has a center axis extending from the first end to the second end, and wherein the at least one groove extends parallel to the center axis and cuts the at least one thread.

3 . The dental implant of claim 1 , wherein the elongated body has a center axis extending from the first end to the second end, and wherein the at least one groove extends at an angle relative to the center axis.

4 . The dental implant of claim 1 , wherein the at least one groove extends along a length of the at least one thread.

5 . The dental implant of claim 1 , wherein the at least one groove has a third roughened surface having a third roughness.

6 . The dental implant of claim 1 , wherein the plurality of turns has a helical shape, wherein an inner section of each of the opposing flanks relative to a central axis of the dental implant has a roughened potion relative to the crest while an outer section of the flank relative to the central axis has a roughness similar to the crest and wherein the first roughness ranges from about 0.7 to about 1.6 microns.

7 . The implant of claim 6 , wherein the crest has one of a flattened shape, rounded shape and peaked shape, wherein each of the opposing roots has one of a flattened shape, a rounded shape, and an angled shape, and further comprising a self-tapping region positioned at a cutting tip in the lower portion of the elongated body, wherein the self-tapping region is radially offset from the at least one groove, wherein a distal end of the at least one groove is offset from the cutting tip, and wherein at least a portion of the at least one groove is positioned between the upper portion of the elongate body and the self-tapping region.

8 . The dental implant of claim 1 , wherein the first roughened surface is a first acid etched surface and the second roughened surface is a second acid etched surface.

9 . The dental implant of claim 8 , wherein the first acid etched surface bas a surface roughness of 0.7 to 1.6 microns and the second acid etched surface has a surface roughness of 0.3 to 0.7 microns.

10 . The dental implant of claim 1 , wherein each of the opposing roots has a rounded shape or wherein each of the opposing roots has an angled shape and wherein the second roughness of the crest ranges from about 0.3 to about 0.7 microns.

11 . A dental implant for implantation into bone tissue, the dental implant having:

at least one thread including a crest positioned between opposing roots and opposing flanks, the thread making a plurality of helical turns around the dental implant;

wherein for each of the plurality of helical turns:

a roughened portion is located adjacent to each of the opposing roots of the thread;

the crest of the thread is relatively smooth; and

a transition region is located on each of the opposing flanks of the at least one thread, the transition region including a portion of gradually decreasing roughness in a direction of the crest;

a length of the roughened portion and the transition region near a first end of the dental implant is different than the length of the roughened portion and the transition region near a second end of the dental implant; and

at least one groove extending along at least a portion of the at least one thread.

12 . The dental implant of claim 11 , wherein the dental implant has a center axis extending from the first end to the second end, and wherein the at least one groove extends parallel to the center axis and further comprising a self-tapping region positioned at a cutting tip of the at least one thread, wherein the self-tapping region is radially offset from the at least one groove, wherein a distal end of the at least one groove is offset from the cutting tip, and wherein at least a portion of the at least one groove is positioned between an upper end of the dental implant and the self-tapping region.

13 . The dental implant of claim 11 , wherein a roughness of the roughened portion ranges from about 0.7 to about 1.6 microns and wherein the crest has one of a flattened shape, rounded shape and peaked shape, and wherein each of the opposing roots has one of a flattened shape, a rounded shape, and an angled shape, wherein an elongated body of the implant has a center axis extending from the first end to the second end, and wherein the at least one groove extends at an angle relative to the center axis.

14 . The dental implant of claim 11 , wherein the plurality of turns has a helical shape, wherein an inner section of each of the opposing flanks relative to a central axis of the dental implant has a roughened potion relative to the crest while an outer section of each of the opposing flanks relative to the central axis has a roughness similar to the crest, wherein the portion of the transition region transitions from a first roughness to a second roughness, wherein the roughened portion adjacent to each of the opposing roots of the thread is a first roughened portion and the at least one groove has a second roughened portion.

15 . A dental implant for implantation into bone tissue having an exterior surface comprising:

an elongated body extending from a first end to a second end and having an upper portion configured to receive a prosthesis, a lower portion for being submerged in the bone tissue, and an outer surface;

at least one groove extending along at least a portion of the elongate body; and

at least one thread on the outer surface making a plurality of turns around the elongated body between the lower portion and the upper portion, the at least one thread including a root, a flank, and a crest,

wherein around a circumference of each of the plurality of turns:

the root and a segment of the flank have a first roughened surface having a first roughness, the crest has a second roughened surface having a second roughness, and

a transition region is positioned between the crest and the segment of the flank;

wherein a length of the first roughened surface and the transition region near the first end is different than the length of the first roughened surface and the transition region near the second end; and

wherein the first roughness is greater than the second roughness, the transition region having a gradually decreasing roughness in a direction of the crest.

16 . The dental implant of claim 15 , further comprising a self-tapping region positioned at a cutting tip of the at least one thread in the lower portion of the elongated body;

wherein the self-tapping region is radially offset from the at least one groove;

wherein at least a portion of the at least one groove is positioned between the upper portion of the elongated body and the self-tapping region; and

wherein a distal end of the at least one groove is offset from the cutting tip.