Dental implant having reverse-tapered main body for anterior post-extraction sockets

Abstract

A dental implant includes a body and a threaded surface. The body has an upper portion, a middle portion, and a lower portion. The upper portion of the body includes a generally cylindrical region. The lower portion of the body includes a generally inwardly tapered region. The middle portion of the body includes an outwardly extending bulge. A maximum outer diameter of the bulge is greater than (i) a maximum outer diameter of the upper portion and (ii) a maximum outer diameter of the lower portion. The threaded surface is on the body within at least the upper portion of the body, the bulge, and the lower portion of the body.

Claims

1. A dental implant, comprising: a coronal portion having a generally cylindrical portion, the coronal portion including grooves along an outer surface thereof; and a threaded apical portion for anchoring the dental implant in bone of a patient, the threaded apical portion including a threaded outwardly tapered portion and a threaded inwardly tapered portion that together form a bulge feature in the threaded apical portion, the bulge feature aiding in the anchoring of the dental implant in the bone, an outer diameter of the threaded outwardly tapered portion increasing apically, an outer diameter of the threaded inwardly tapered portion decreasing apically, a maximum outer diameter of the bulge feature being greater than a maximum outer diameter of the coronal portion.

2. The dental implant of claim 1, wherein the grooves on the coronal portion are formed by a thread such that at least a portion of the coronal portion is a threaded coronal portion.

3. The dental implant of claim 2, wherein the maximum outer diameter of the bulge feature is greater than a maximum outer diameter of the threaded coronal portion.

4. The dental implant of claim 2, wherein the threaded coronal portion is blended into the threaded apical portion such that the dental implant has a single thread.

5. The dental implant of claim 1, wherein at least a portion of the coronal portion is roughened.

6. The dental implant of claim 5, wherein the roughened portion of the coronal portion includes a plurality of irregularities having a peak-to-valley height no greater than 30 microns.

7. The dental implant of claim 1, wherein the coronal portion has an exterior surface that is sized and configured to promote bone growth of at least a portion of the bone of the patient after installation of the dental implant in a mouth of the patient.

8. The dental implant of claim 1, further comprising an interior bore having a threaded portion for receiving a screw configured to removably hold an abutment in engagement with the dental implant.

9. The dental implant of claim 8, further comprising a non-rotational feature configured to engage the abutment in a non-rotational fashion.

10. The dental implant of claim 8, wherein the interior bore is at oblique angle relative to a central axis of the dental implant.

11. The dental implant of claim 1, wherein about 20 percent to about 70 percent of the threaded apical portion has a larger outer diameter than the coronal portion.

12. The dental implant of claim 1, wherein an outer surface of the threaded outwardly tapered portion forms a generally straight taper and an outer surface of the threaded inwardly tapered portion forms a generally straight taper.

13. The dental implant of claim 1, wherein the maximum outer diameter of the coronal portion is between about 15 percent and about 30 percent less than the maximum outer diameter of the bulge feature.

14. A method for installing a dental implant in a socket in a mouth of a patient, the socket being formed by bone, the method comprising: positioning the dental implant into the socket in the mouth of the patient such that a coronal portion of the dental implant and the socket form a coronal compartment, the dental implant including a threaded apical portion having a threaded outwardly tapered portion and a threaded inwardly tapered portion that together form a bulge feature in the threaded apical portion, an outer diameter of the threaded outwardly tapered portion increasing apically, an outer diameter of the threaded inwardly tapered portion decreasing apically, a maximum outer diameter of the bulge feature being greater than a maximum outer diameter of the coronal portion; and anchoring the dental implant in the bone by engaging the bulge feature with the bone.

15. The method of claim 14, further comprising positioning grafting materials in the coronal compartment such that the grafting materials act as a scaffold to maintain a volume of the coronal compartment during healing of the patient.

16. The method of claim 15, wherein the grafting materials including hard tissue allografts, xenografts, autogenous, or alloplasts.

17. The method of claim 14, wherein the coronal portion is generally cylindrical and wherein the coronal compartment extends 360 degrees around the coronal portion of the dental implant.

18. The method of claim 14, wherein at least a portion of the coronal portion is a threaded coronal portion and wherein the maximum outer diameter of the bulge feature is greater than a maximum outer diameter of the threaded coronal portion.

19. A dental implant, comprising: a collar portion at an upper end of the dental implant, the collar portion including an opening leading into an angled bore having a bore central axis that is angled relative to a central axis of the dental implant, the angled bore for receiving a screw to hold an abutment on the dental implant; a coronal portion located below the collar portion and including a generally cylindrical region, the coronal portion including grooves along an outer surface thereof; and an apical portion located below the coronal portion, the apical portion including an outwardly tapered portion and an inwardly tapered portion that together form a bulge feature in the apical portion, the outer diameter of the outwardly tapered portion increasing apically, an outer diameter of the inwardly tapered portion decreasing apically, the bulge feature having a maximum outer diameter on the dental implant, the apical portion including a thread that extends from a bottom end of the implant to the maximum outer diameter, the maximum outer diameter being greater than the inner diameter of the grooves.

20. The dental implant of claim 19, wherein the angled bore further includes a non-round portion for non-rotational engagement with the abutment.

21. The dental implant of claim 19, wherein the grooves on the coronal portion are formed by a thread such that at least a portion of the coronal portion is a threaded coronal portion.

22. The dental implant of claim 19, wherein the angled bore terminates within the dental implant above the maximum outer diameter of the dental implant.

23. The dental implant of claim 19, wherein the collar portion includes a seating surface for the abutment that is located on a plane that is perpendicular to the bore central axis and that is oblique relative to the central axis of the dental implant.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The foregoing and other advantages of the present disclosure will become apparent upon reading the following detailed description and upon reference to the drawings.

(2) FIG. 1A is a perspective view of a straight-bore dental implant according to some implementations of the present disclosure;

(3) FIG. 1B is a cross-sectional view of the dental implant shown in FIG. 1A;

(4) FIG. 2A is a perspective view of an angled-bore dental implant according to some implementations of the present disclosure;

(5) FIG. 2B is a cross-sectional view of the dental implant shown in FIG. 2A;

(6) FIG. 3A is a partial cross-sectional view of a mouth of a patient having an extraction socket to receive the dental implant of FIG. 1A according to some implementations of the present disclosure;

(7) FIG. 3B a partial cross-sectional view that illustrates the dental implant of FIG. 1A being installed in the extraction socket of FIG. 3A;

(8) FIG. 3C is a partial cross-sectional view of the dental implant of FIG. 1A fully installed in the extraction socket of FIGS. 3A and 3B and ready to be coupled with a member;

(9) FIG. 3D is a partial cross-sectional view that illustrates the member of FIG. 3C attached to the dental implant of FIG. 1A fully installed in the in the extraction socket of FIGS. 3A and 3B;

(10) FIG. 4 is a partial perspective view of a dental implant with a triple cone internal connection and an abutment with a triple cone boss according to some implementations of the present disclosure;

(11) FIG. 5 is a perspective view of a straight-bore dental implant according to some implementations of the present disclosure;

(12) FIG. 6A is a perspective view of a straight-bore dental implant according to some implementations of the present disclosure; and

(13) FIG. 6B is a cross-sectional view of the dental implant shown in FIG. 6A.

(14) While the present disclosure is susceptible to various modifications and alternative forms, specific implementations have been shown by way of example in the drawings and will be described in detail herein. It should be understood, however, that the present disclosure is not intended to be limited to the particular forms disclosed. Rather, the present disclosure is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.

DETAILED DESCRIPTION

(15) Referring generally to FIGS. 1A-1B, a dental implant 100 is shown for installation into a socket in a mouth of a patient (e.g., extraction socket 309 in FIG. 3A). The dental implant 100 includes a body 110, an interior bore 160, and a non-rotational feature 180. The body 110 has a coronal portion 111a and an apical portion 111b.

(16) The body 110 of the dental implant 100 has a main-central axis X.sub.main. The main-central axis X.sub.main is defined as a straight axis/line that goes through the geometric center and/or the axis of symmetry of at least the apical portion 111b of the body 110 of the dental implant 100. As shown in FIGS. 1A and 1B, the main-central axis X.sub.main of the dental implant 100 also goes through the geometric center and/or the axis of symmetry of the coronal portion 111a of the body 110 of the dental implant 100. This is because the dental implant 100 is a straight-bore dental implant as opposed to an angled-bore dental implants described herein in reference to FIGS. 2A and 2B.

(17) The coronal portion 111a of the body 110 has an exterior surface 114 that is sized and configured to promote bone growth of at least a portion of bone (e.g., the buccal bone plate) of the extraction socket in the mouth of the patient after installation of the dental implant 100 therein. By sized and configured to promote bone growth, it is generally meant that the coronal portion 111a is relatively narrower than the extraction socket to provide a gap (e.g., gap G in FIG. 3C) between at least a portion of the coronal portion 111a and a wall of the socket. As such, the gap permits blood to clot therebetween, which can promote new bone growth, as well as providing a space for grafting materials. The gap has a width preferably between about 0.5 millimeters and about 3 millimeters. In some implementations, the gap has a width of about 1.5 millimeters. As shown in FIGS. 1A and 1B, the coronal portion 111a of the body 110 has a generally cylindrical shape with a generally constant outer diameter D.sub.MAX,coronal, except for a thread 125 wrapped therearound. Various other shapes and sizes of the coronal portion 111a of the body 110 are contemplated, such as, for example, outwardly tapered, inwardly tapered, curved (concave, convex, etc.), flat, triangular, square, rectangular, hexagonal, polygonal, or any combination thereof.

(18) The apical portion 111b of the body 110 has an exterior surface 115 that is sized and configured to anchor the dental implant 100 in the bone of the socket in the mouth of the patient. The apical portion 111b includes an outwardly tapered portion 113a and an inwardly tapered portion 113b that together form a bulge feature 120 in the apical portion 111b of the body 110. The bulge feature 120 aids in anchoring the dental implant 100 in the bone of the socket by providing a relatively wider portion (e.g., as compared with the coronal portion 111a) of the body 110 apically where the bone in the socket is typically thicker. As such, the dental implant 100 can be installed with sufficient and/or relatively greater primary stability than a dental implant without such a bulge feature 120. The bulge feature 120 extends outwardly from the body 110 for 360 degrees around the apical portion 111b of the body 110. The bulge feature 120 is generally symmetric about the main-central axis X.sub.Main of the dental implant 100. By generally symmetric it is meant that the exterior surface 115 of the apical portion 111b is symmetric, but that the thread 125 that wraps around the bulge feature 120 is not exactly symmetric about the main-central axis X.sub.Main of the dental implant 100 (e.g., due to the thread 125 having a pitch). By including the bulge feature 120 in the apical portion 111b, the coronal portion 111a is able to have a relatively narrower outer diameter, which allows for a relatively larger gap between the exterior surface 114 of the coronal portion 111a and the wall of the socket into which the dental implant 100 is installed.

(19) The outwardly tapered portion 113a of the apical portion 111b has an outer diameter that increases along the outwardly tapered portion 113a in an apical direction and/or towards a lowermost end 150 of the apical portion 111b (e.g., in the direction of arrow A), which is also referred to as the apical end 150 of the dental implant 100 that is opposite the coronal end or the uppermost end of the coronal portion 111a of the dental implant 100. The inwardly tapered portion 113b has an outer diameter that decreases along the inwardly tapered portion 113b in the apical direction and/or towards the lowermost end 150 of the apical portion 111b (e.g., in the direction of arrow A). The exterior surface 115 of the outwardly tapered portion 113a forms a generally straight taper. Alternatively, the exterior surface 115 of the outwardly tapered portion 113a can form a generally curved taper (e.g., a convex curved taper) and/or a combination of a straight and curved taper. The exterior surface 115 of the inwardly tapered portion 113b forms a generally straight taper. Alternatively, the exterior surface 115 of the inwardly tapered portion 113b can form a generally curved taper (e.g., a convex curved taper) and/or a combination of a straight and curved taper.

(20) The coronal portion 111a can be referred to as a threaded coronal portion 111a as the exterior surface 114 of the coronal portion 111a has at least a portion of the thread 125 wrapped therearound. Similarly, the apical portion 111b can be referred to as a threaded apical portion 111b as the exterior surface 115 of the apical portion 111b has at least a portion of the thread 125 wrapped therearound.

(21) The thread 125 can be a single thread 125, or the thread 125 can include two or more threads (e.g., two threads blended together) having one or more starts with any number of pitches and/or thread depths. In some implementations, the thread 125 includes a first thread wrapped around the coronal portion 111a and a second thread wrapped around the apical portion 111b. In some such implementations, the first thread is a micro thread and the second thread is a macro thread. The first thread and the second thread can have the same or different thread pitches (e.g., longitudinal distance between consecutive peaks, crest-to-crest distance, trough-to-trough distance) and/or the same or different thread depths. As shown in FIG. 1B, the thread 125 in the coronal portion 111a has a first thread depth d.sub.1 and the thread 125 in the apical portion 111b has a second thread depth d.sub.2. In some implementations, the first thread depth d.sub.1 is between about 0.1 millimeters and about 0.7 millimeters (e.g., about 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7 millimeters). Similarly, the second thread depth d.sub.2 is between about 0.1 millimeters and about 0.7 millimeters (e.g., about 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7 millimeters). In some implementations, the first thread depth d.sub.1 is between about 0.1 millimeters and about 0.2 millimeters and the second thread depth d.sub.2 is between about 0.4 millimeters and about 0.5 millimeters. As best shown in FIG. 1B, the second thread depth d.sub.2 is larger than the first thread depth d.sub.1, although various other thread depths are contemplated.

(22) The body 110 can include one or more generally vertical flutes (not shown) and/or one or more non-vertical flutes (see for example flutes 570 shown in FIG. 5), such as, for example, one or more spiral flutes. Such flutes can be positioned in the inwardly tapered portion 113b to aid a self-tapping action of the dental implant 100. As shown in FIGS. 1A and 1B, the lowermost end 150 of the apical portion 111b of the body 110 terminates in a rounded dome shape. Such a shape aids in limiting the self-tapping action of the dental implant 100 when including the one or more flutes (not shown). The limiting of the self-tapping action can prevent an inadvertent puncture of the nasal floor during installation of a dental implant in a mouth of a patient.

(23) The body 110 is described herein as including the coronal portion 111b and the apical portion 111b. The body 110 also includes a collar 130 that is positioned above the coronal portion 111a. The collar 130 is not threaded (e.g., the thread 125 is not wrapped around the collar 130) and has a generally smooth exterior surface.

(24) The dental implant 100 has an overall length L.sub.I, which can be, for example, between about 10 millimeters and about 18 millimeters (e.g., the overall length L.sub.I of the dental implant 100 can be 10, 11, 12, 13, 14, 15, 16, 17, 18, etc. millimeters). The length of the dental implant 100 is selected depending on the location in which the dental implant 100 is being installed and the naturally occurring anatomy of the patient receiving the dental implant 100.

(25) The bulge feature 120 has a length L.sub.Bulge, which can be, for example, between about 4 millimeters and about 9 millimeters (e.g., the length L.sub.Bulge of the bulge feature 120 can be about 4, 5, 6, 7, 8, 9 millimeters). In some implementations, the length L.sub.Bulge of the bulge feature 120 is about 30 percent to about 60 percent of the overall length L.sub.I of the dental implant 100. In some other implementations, the length L.sub.Bulge of the bulge feature 120 is about 40 percent to about 50 percent of the overall length L.sub.I of the dental implant 100. For example, the length L.sub.Bulge of the bulge feature 120 is about 30, 35, 40, 45, 50, 55, or 60 percent of the overall length L.sub.I of the dental implant 100.

(26) The coronal portion 111a has a length L.sub.CP, which can be, for example, between about 1.5 millimeters and about 9 millimeters (e.g., the length L.sub.CP of the coronal portion 111a can be about 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9 millimeters). In some implementations, the length L.sub.CP of the coronal portion 111a is about 10 percent to about 50 percent of the overall length L.sub.I of the dental implant 100. In some other implementations, the length L.sub.CP of the coronal portion 111a is about 15 percent to about 30 percent of the overall length L.sub.I of the dental implant 100. For example, the length L.sub.CP of the coronal portion 111a is about 10, 15, 20, 25, 30, 35, 40, 45, 50 percent of the overall length L.sub.I of the dental implant 100.

(27) The apical portion 111b has a length L.sub.AP, which can be, for example, between about 6 millimeters and about 16 millimeters (e.g., the length L.sub.AP of the apical portion 111b can be about 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15, 15.5, 16 millimeters). In some implementations, the length L.sub.AP of the apical portion 111b is about 50 percent to about 90 percent of the overall length L.sub.I of the dental implant 100. In some other implementations, the length L.sub.AP of the apical portion 111b is about 70 percent to about 85 percent of the overall length L.sub.I of the dental implant 100. For example, the length L.sub.AP of the apical portion 111b is about 50, 55, 60, 65, 70, 75, 80, 85, 90 percent of the overall length L.sub.I of the dental implant 100.

(28) The collar 130 has a length L.sub.C, which can be, for example, between about 0.5 millimeters and about 3 millimeters (e.g., the length L.sub.C of the collar 130 can be about 0.5, 1.0, 1.5, 2, 2.5, 3 millimeters). In some implementations, the length L.sub.C of the collar 130 is about 5 percent to about 20 percent of the overall length L.sub.I of the dental implant 100. In some other implementations, the length L.sub.C of the collar 130 is about 15 percent to about 20 percent of the overall length L.sub.I of the dental implant 100. For example, the length L.sub.C of the collar 130 is about 5, 10, 15, 20 percent of the overall length L.sub.I of the dental implant 100.

(29) The outwardly tapered portion 113a has a length L.sub.ot, which can be, for example, between about 1 millimeter and about 5 millimeters (e.g., the length L.sub.ot of the outwardly tapered portion 113a can be about 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5 millimeters). In some implementations, the length L.sub.ot of the outwardly tapered portion 113a is about 10 percent to about 30 percent of the overall length L.sub.I of the dental implant 100. In some other implementations, the length L.sub.ot of the outwardly tapered portion 113a is about 15 percent to about 25 percent of the overall length L.sub.I of the dental implant 100. For example, the length L.sub.ot of the outwardly tapered portion 113a is about 10, 15, 20, 25, 30 percent of the overall length L.sub.I of the dental implant 100.

(30) The inwardly tapered portion 113b has a length L.sub.it, which can be, for example, between about 4 millimeters and about 9 millimeters (e.g., the length L.sub.it of the inwardly tapered portion 113b can be about 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9 millimeters). In some implementations, the length L.sub.it of the inwardly tapered portion 113b is about 30 percent to about 80 percent of the overall length L.sub.I of the dental implant 100. In some other implementations, the length L.sub.it of the inwardly tapered portion 113b is about 40 percent to about 50 percent of the overall length L.sub.I of the dental implant 100. For example, the length L.sub.it of the inwardly tapered portion 113b is about 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80 percent of the overall length L.sub.I of the dental implant 100.

(31) To further describe the bulge feature 120, reference is made to several outer diameter relationships of the body 110 of the dental implant 100. For example, a maximum outer diameter D.sub.MAX,bulge of the bulge feature 120 is greater than (i) a maximum outer diameter D.sub.MAX,coronal of the coronal portion 111a and (ii) a maximum outer diameter D.sub.MAX,collar of the collar 130. As shown, the maximum outer diameter D.sub.MAX,coronal of the coronal portion 111a and the maximum outer diameter D.sub.MAX,collar of the collar 130 are the same or about the same. Alternatively, the maximum outer diameter D.sub.MAX,coronal of the coronal portion 111a and the maximum outer diameter D.sub.MAX,collar of the collar 130 may be different, for example, if the dental implant includes platform shifting where the collar 130 has a larger or smaller maximum outer diameter as compared with the maximum outer diameter of the coronal portion 111a.

(32) As shown in FIGS. 1A and 1B, the maximum outer diameter D.sub.MAX,bulge of the bulge feature 120 is about 20 percent greater than the maximum outer diameter D.sub.MAX,coronal of the coronal portion 111a. Alternatively, the maximum outer diameter D.sub.MAX,bulge of the bulge feature 120 can be between about 10 percent and about 30 percent greater than the maximum outer diameter D.sub.MAX,coronal of the coronal portion 111a. In some implementations, about 30 percent to about 50 percent of the apical portion 111b (which includes the bulge feature 120 therein) has a larger outer diameter than the coronal portion 111a.

(33) Further, in some implementations, about 20 percent to about 70 percent of the apical portion 111b has a larger outer diameter than the coronal portion 111a. More specifically, in some implementations, about 30 percent to about 50 percent of the apical portion 111b has a larger outer diameter than the coronal portion 111a.

(34) Further, in some implementations, the maximum outer diameter D.sub.MAX,coronal of the coronal portion 111a is at least about 20 percent less than (i) the maximum outer diameter D.sub.MAX,bulge of the bulge feature 120, (ii) a maximum outer diameter of the outwardly tapered portion 113a, (iii) a maximum outer diameter of the inwardly tapered portion 113b, or (iv) any combination thereof. Alternatively, the maximum outer diameter D.sub.MAX,coronal of the coronal portion 111a is between about 15 percent and about 30 percent less than (i) the maximum outer diameter D.sub.MAX,bulge of the bulge feature 120, (ii) the maximum outer diameter of the outwardly tapered portion 113a, (iii) the maximum outer diameter of the inwardly tapered portion 113b, or (iv) any combination thereof.

(35) The interior bore 160 of the dental implant 100 is formed in the body 110 and has a threaded portion 165 for receiving a retaining screw that removably holds an abutment in engagement with the dental implant 100. The interior bore 160 also includes therein the non-rotational feature 180, which is shown as including a hexagonal socket feature that can non-rotationally mate with a corresponding non-rotational feature of an abutment in a non-rotational fashion. Various alternative non-rotational features are contemplated for the dental implant 100, such as, for example, a four-sided square or rectangular socket (not shown), a five-sided polygonal socket (not shown), a twelve-sided polygonal/star socket (not shown), a three-piece clover shaped socket (not shown), a triple cone socket (shown in FIG. 4 and described below), one or more splines/grooves (not shown), etc. Further, instead of the non-rotational feature 180 being an internal connection dental implant with an internal socket, the non-rotational feature 180 can be an external connection dental implant with an external boss (not shown). Alternatively to the interior bore 160 including the non-rotational feature 180 (e.g., with a positive non-rotational structure), the interior bore 160 can include a locking conical feature that mates with a corresponding conical feature of an abutment. While the geometry of the conical features do not themselves provide a positive structure to limit and/or prevent relative rotation, the locking conical features rely on friction between the dental implant and abutment and a morse taper geometry of the conical features to provide a relative non-rotational feature.

(36) The interior bore 160 has a bore-central axis X.sub.bore. The bore-central axis X.sub.bore is defined as a straight axis/line that goes through the geometric center and/or the axis of symmetry of at least the interior bore 160 of the dental implant 100. As shown in FIGS. 1A and 1B, the bore-central axis X.sub.bore of the interior bore 160 also goes through the geometric center and/or the axis of symmetry of the apical portion 111b of the body 110 of the dental implant 100. This is because the dental implant 100 is a straight-bore dental implant as opposed to an angled-bore dental implant 200 shown in FIGS. 2A and 2B.

(37) Alternatively to describing the body 110 as having the coronal portion 111a, the apical portion 111b, and the collar 130, the body 110 can be described as having an upper portion 112a, a middle portion 112b, and a lower portion 112c. Using such designations, the upper portion 112a of the body 110 includes a generally cylindrical region, which includes, for example, the coronal portion 111a (e.g., with a threaded surface) and/or the collar 130 (e.g., without a threaded surface); the lower portion 112c of the body 110 includes a generally inwardly tapered region (e.g., inwardly tapered in the direction of arrow A); and the middle portion 112b of the body 110 at least includes the bulge feature 120.

(38) Now referring to FIGS. 2A and 2B, an angled dental implant 200 having a body 210 is shown that is similar to the dental implant 100 described herein and shown in FIGS. 1A and 1B. However, the angled dental implant 200 generally differs from the dental implant 100 (FIGS. 1A and 1B) in that an angled collar 230 and an angled interior bore 260 of the angled dental implant 200 are angled relative to a main-central axis X.sub.main of the angled dental implant 200. For example, the bore-central axis X.sub.bore can be at an angle θ relative to the main-central axis X.sub.main between about 7° and about 31°. As shown, the bore-central axis X.sub.bore is at an angle θ relative to the main-central axis X.sub.main of about 12°.

(39) The angled dental implant 200 further includes a non-rotational feature 280 that is the same as, or similar to, the non-rotational feature 180, except that the non-rotational feature 280 is angled relative to the main-central axis X.sub.main of the angled dental implant 200 as the non-rotational feature 280 extends into and through the angled collar 230 as a socket. Like the body 110 of the dental implant 100, the body 210 includes a coronal portion 211a and an apical portion 211b including a bulge feature 220, which is the same as, or similar to, the bulge feature 120.

(40) Now referring to FIG. 3A, a partial cross-sectional view of a mouth 301 of a patient is shown. The mouth 301 includes bone 305 and soft tissue 307 (e.g., gingiva) that forms an extraction socket 309 (i.e., a natural tooth has been extracted from the site) to receive dental implant 100 installed therein. As shown in FIG. 3A, the bone 305 is relatively thin near the opening of the extraction socket 309 and gets relatively thicker more apically into the extraction socket 309. More specifically, the bone 305 (e.g., the buccal bone plate 312) on the labial side 310 of the extraction socket is even thinner than the bone 305 (e.g., the lingual bone plate 317) on the palatal side 315 of the extraction socket 309. As such, it can be advantageous to encourage bone grown of the bone 305 on the labial side 310 as described herein by, for example, providing a gap between the bone 305 on the labial side 310 and an installed dental implant (e.g., as shown in FIG. 3C).

(41) Referring to FIG. 3B, the dental implant 100 is shown as being partially installed into the extraction socket 309 in the direction of arrow B. FIG. 3C illustrates the dental implant 100 when it is fully installed into the extraction socket 309. Once the dental implant 100 is fully installed into the extraction socket 309, the gap G between the bone 305 on the labial side 310 and the installed dental implant 100 is established. This gap G is typically between about 1 millimeter and about 3 millimeters wide and, more specifically, between about 1.5 millimeter and about 2 millimeters wide. The gap G extends 360 degrees around the coronal portion 111a of the body 110 of the dental implant 100. In some implementations, the gap G is relatively constant around the coronal portion 111a. Alternatively, the gap G can vary about the coronal portion 111a. For example, the gap G may be about 2 millimeters adjacent to the labial side 310 and the gap G may be about 0.5 millimeters adjacent to the palatal side 315. In some implementations, biologic graft materials can be placed in the gap G. Some non-limiting examples of biologic graft materials include hard tissue allografts, xenografts, autogenous, and alloplasts. The biologic graft materials can fill the gap G and act as a scaffold to maintain the volume of gap G during healing for new labial bone plate formation.

(42) With the dental implant 100 fully installed (FIG. 3C), the thread 125 (FIGS. 1A and 1B) in the coronal portion 111a of the dental implant 100 does not directly engage the extraction socket 309. Rather, the thread 125 in the apical portion 111b (e.g., on the bulge feature 120) of the dental implant 100 engages the extraction socket 309 to anchor the dental implant 100 therein providing the primary stability of the installed dental implant 100.

(43) After the dental implant 100 has been fully installed, as shown in FIG. 3C, a member 350 can be attached to the dental implant 100 (e.g., in a non-rotational fashion). The member 350 can be a cover screw (e.g., as shown in FIGS. 3C and 3D), a healing abutment, a healing cap, a temporary abutment, a permanent abutment, an attachment member, etc. Further, a temporary or permanent crown (not shown) can be attached to the abutment 350 depending on the stage in the restorative process. The type of abutment 350 and/or the sequence of different abutments 350 that are placed on the dental implant 100 are dependent on the conditions in the patient's mouth 301, the amount of osseointegration, and the clinician's preferred treatment plan.

(44) As discussed herein, the dental implants of the present disclosure include a non-rotational feature. The non-rotational feature prevents relative rotation between the dental implant and an abutment attached thereto. As shown in FIG. 4, a dental implant 400 includes a non-rotational feature that is a triple cone internal connection 480 that is configured to be non-rotationally coupled with an abutment 450 having a triple cone boss 460. The triple cone internal connection 480 includes three staggered cone shaped surfaces 485a,b,c that are nested within each other thereby creating two internal horizontal flats 490a,b. As the cone shaped surfaces 485a,b,c have a generally round profile, they do not themselves provide a non-rotational function. Rather, each of the cone shaped surfaces 485a,b,c includes a divot or keyway 495a,b,c that mates with a corresponding key 475a,b,c on the corresponding triple cone boss 460 of the abutment 450. As such, the key-keyway coupling prevents relative rotation of the abutment 450 and the dental implant 400. As shown, the keyways 495a,b,c are spaced about a circumference of the triple cone internal connection 480 with a first keyway 495a of the a first one of the cone shaped surfaces 485a positioned at “10 o'clock”, a second keyway 495b of the a second one of the cone shaped surfaces 485b positioned at “12 o'clock”, and a third keyway 495c of the a third one of the cone shaped surfaces 485c positioned at “2 o'clock”. Various other positions for the keyways 495a,b,c are contemplated.

(45) Referring to FIG. 5, a dental implant 500 is shown for installation into a socket in a mouth of a patient (e.g., extraction socket 309 in FIG. 3A). The dental implant 500 includes a body 510, a collar 530, an interior bore 560, and a non-rotational feature (not shown but the same as, or similar to, the non-rotational feature 180). The body 510 has a coronal portion 511a, an apical portion 511b, and a bulge feature 520. The dental implant 500 is the same as, or similar to, the dental implant 100, except that the dental implant 500 generally differs from the dental implant 100 (FIGS. 1A and 1B) in that the bulge feature 520 of the dental implant 500 is relatively lower on the body 510 (e.g., more apical) as compared with the bulge feature 120 of the dental implant 100. As such, the coronal portion 511a of the dental implant 500 is relatively longer than the coronal portion 111a of the dental implant 100. For example, the coronal portion 511a of the dental implant 500 is between about 30 percent and about 40 percent of an overall length of the dental implant 500. More specifically, the coronal portion 511a of the dental implant 500 is about 35 percent of the overall length of the dental implant 500. Further, the dental implant 500 differs from the dental implant 100 (FIGS. 1A and 1B) in that the dental implant 500 includes one or more flutes 570. As shown, the one or more flutes 570 are positioned in an inwardly tapered portion of the apical portion 511b to aid a self-tapping action of the dental implant 500. More specifically, the one or more flutes 570 are positioned in a portion of the bulge feature 520. In some alternative implementations, the one or more flutes 570 can at least be partially positioned in an outwardly tapered portion of the apical portion 511b.

(46) Referring to FIGS. 6A and 6B, a dental implant 600 is shown for installation into a socket in a mouth of a patient (e.g., extraction socket 309 in FIG. 3A). The dental implant 600 includes a body 610, a collar 630, an interior bore 660, and a non-rotational feature 680. The body 610 has a coronal portion 611a, an apical portion 611b, a first bulge feature 620a, and a second bulge feature 620b. The dental implant 600 is the same as, or similar to, the dental implants 100, 500, except that the dental implant 600 generally differs from the dental implants 100 (FIGS. 1A and 1B) and 500 (FIG. 5) in that the dental implant 600 includes two bulge features 620a, 620b as compared with the single bulge features 120, 520 of the dental implants 100, 500. Each of the first and the second bulge features 620a, 620b can be the same as, or similar to, the bulge feature 120, 220, 520. Additionally, the first and the second bulge features 620a, 620b can be the same as each other or different from each other (e.g., same diameters, same lengths, same curvature, different diameters, different lengths, different curvatures, etc., or any combination thereof). For example, the first bulge feature 620a, which is more apical than the second bulge feature 620b, has a maximum outer diameter D.sub.MAX,bulge1 (e.g., 4.5 millimeters), which is less than a maximum outer diameter D.sub.MAX,bulge2 (e.g., 5.5 millimeters) of the second bulge feature 620b; and the first and the second bulge features 620a, 620b have the same length L.sub.Bulge1, L.sub.Bulge2, respectively (e.g., about 3.5 millimeters).

(47) Various other combinations of differently sized and positioned first and second bulge features are contemplated. For example, in some such alternatives, the length L.sub.Bulge1 of the first bulge feature 620a can be less than or greater than the length L.sub.Bulge2 of the second bulge feature 620b (e.g., five percent less, ten percent less, twenty percent less, thirty percent less, five percent more, ten percent more, twenty percent more, thirty percent more, etc.) or vice versa. For another example, in some such alternatives, the maximum outer diameter D.sub.MAX,bulge1 of the first bulge feature 620a can be the same as, or less than, or greater than the maximum outer diameter D.sub.MAX,bulge2 of the second bulge feature 620b (e.g., five percent less, ten percent less, twenty percent less, thirty percent less, five percent more, ten percent more, twenty percent more, thirty percent more, etc.) or vice versa.

(48) According to some alternative implementations, the dental implants of the present disclosure can include any number of bulges, such as, for example, one bulge as shown in FIGS. 1A-3D and 5, two bulges as shown in FIGS. 6A and 6B, three bulges (not shown), four bulges (not shown), etc. In such alternatives, each of the bulges can have the same or different size (e.g., maximum diameter, length, etc.). Further the positioning of the bulges can vary. For example, in some implementations, a first most apical bulge has a first maximum diameter, a second middle bulge has a second maximum diameter, and a third most coronal bulge has a third maximum diameter, where the second maximum diameter of the second bulge is smaller than both the first and the third maximum diameters of the first and third bulges, respectively (i.e., the middle bulge has the smallest maximum diameter. For another example, in some implementations, a first most apical bulge has a first maximum diameter, a second middle bulge has a second maximum diameter, and a third most coronal bulge has a third maximum diameter, where the first maximum diameter is larger than the second and the third maximum diameters and the third maximum diameter is larger than the second maximum diameter.

(49) While the coronal portion 111a (FIGS. 1A and 1B) is shown and described as being a threaded coronal portion 111a having at least a portion of the thread 125 wrapped therearound, in some alternative implementations, the coronal portion 111a or a section of the coronal portion 111a (e.g., ten percent of the coronal portion 111a, twenty percent of the coronal portion 111a, fifty percent of the coronal portion 111a, seventy-five percent of the coronal portion 111a, ninety percent of the coronal portion 111a, etc.) is not threaded and instead of including at least a portion of the thread 125 wrapped therearound, the coronal portion 111a includes one or more rings and/or parallel grooves formed in the exterior surface 114. The coronal portion 211a (FIGS. 2A and 2B) and the coronal portion 511a (FIG. 5) and the coronal portion 611a (FIGS. 6A and 6B) can similarly include one or more rings and/or parallel grooves instead of being threaded.

(50) While the coronal portion 111a (FIGS. 1A and 1B) is shown and described as being a threaded coronal portion 111a having at least a portion of the thread 125 wrapped therearound, in some alternative implementations, the coronal portion 111a or a section of the coronal portion 111a (e.g., ten percent of the coronal portion 111a, twenty percent of the coronal portion 111a, fifty percent of the coronal portion 111a, seventy-five percent of the coronal portion 111a, ninety percent of the coronal portion 111a, etc.) is not threaded and instead of including at least a portion of the thread 125 wrapped therearound, the coronal portion 111a or a section of the coronal portion 111a includes a roughened surface and/or a texturized surface formed on and/or in the exterior surface 114. Additionally, the collar 130 or a portion of the collar 130 can include the same roughened surface and/or texturized surface.

(51) The roughened surface or texturized surface can be formed by any number of processes, such as, for example, acid etching/treatments, grit blasting (e.g., with sand, silicone, titanium, etc.), or any other method of roughening/texturizing surfaces. The roughened surface of the coronal portion 111a (or section thereof) and/or of the collar 130 (or section thereof) includes a plurality of irregularities (e.g., protrusions, dents, valleys, notches, etc.) having a peak-to-valley height no greater than thirty microns. In some implementations, the peak-to-valley height is between one and twenty microns. In some implementations, the peak-to-valley height is between one and ten microns. The coronal portion 211a (FIGS. 2A and 2B) or section thereof and the coronal portion 511a (FIG. 5) or section thereof and the coronal portion 611a (FIGS. 6A and 6B) or section thereof can similarly include a roughened surface and/or a texturized surface instead of being threaded.

(52) While the dental implant 100 (FIGS. 1A and 1B) is shown and described as having the collar 130, in some alternative implementations, the dental implant 100 does not have a collar 130. Rather, in such alternatives, the coronal portion 111a extends all the way to a top edge of the dental implant (not shown) where a table or seating surface for an abutment is located. The dental implant 200 (FIGS. 2A and 2B) and the dental implant 500 (FIG. 5) and the dental implant 600 (FIGS. 6A and 6B) can similarly be formed without the collars 230, 530, 630, respectively.

(53) While the dental implant 100 is shown and described as having the generally cylindrical coronal portion 111a and the collar 130, in some alternative implementations, the dental implant 100 does not have a collar and does not have a generally cylindrical coronal portion. Rather, in such alternatives, the outwardly tapered portion 113a extends all the way to a top edge of the dental implant (not shown) where a table or seating surface for an abutment is located. That is, in such alternatives, the body 110 of the dental implant 100 is outwardly tapered (e.g., in the direction of arrow A) from the top edge to the part of the bulge feature 120 having the maximum outer diameter (e.g., D.sub.MAX,BULGE). Such an outward taper can be generally straight or curved/variable (e.g., a concave curved taper). The dental implant 200 (FIGS. 2A and 2B) and the dental implant 500 (FIG. 5) and the dental implant 600 (FIGS. 6A and 6B) can similarly be formed without a collar and without a generally cylindrical coronal portion.

(54) While the present disclosure has been described with reference to one or more particular embodiments and implementations, those skilled in the art will recognize that many changes may be made thereto without departing from the spirit and scope of the present disclosure. Each of these embodiments and implementations and obvious variations thereof is contemplated as falling within the spirit and scope of the present disclosure, which is set forth in the claims that follow.