TW201540268A - Dental implant - Google Patents

Abstract

The invention relates to a dental implant. The dental implant has a body portion, a first screw portion, a head portion, a plurality of second screw portion and a plurality of trenches. The head portion and the first screw portion are respectively disposed at distinct ends of the body portion. The second screw portions, with greater pitch than the first screw portion, are disposed at radial side of the body portion, and each of the second screw portion has a cutting surface and a cumulating surface. The trench is disposed at side of the head portion and the body portion, with passing through the cutting surfaces and cumulating surfaces to approach the first screw portion.

Description

Dental implant structure

The present invention relates to a dental implant structure, and more particularly to a dental implant structure that is required for a dental implant surgery.

People rely on their teeth for eating and chewing every day to maintain their lives. However, after daily use and neglect of maintenance and cleaning, it is easy to cause tooth decay and tooth loss; therefore, with the development of technology, more and more patients need to implant teeth, and dental clinics have mushroomed. More and more open.

Traditionally, the method of implant treatment is to first extract the tooth. After three months, the wound is healed and another operation is performed to push the sinus and bone powder. Then, the upper jaw is ground through a window and the bone powder is filled. After the completion of the bone powder, wait three to six months before the implant surgery (implant, or artificial root) is performed, and the implant is implanted into the alveolar bone in the oral cavity. Finally, wait three to six months, install the crown and complete the entire implant procedure. In general, the traditional dental implant treatment takes about a year and a half.

There is a relatively new method of implanting teeth, such as the "five-in-one rapid dental implant method with cosmetic effect" and the "five-in-one dental implant method and tool" of 099119391, respectively, which disclose several different methods. Rapid dental implant method. this way The essence of this is to complete the five steps of tooth extraction, pushing the sinus, bone-filling powder, implanting teeth, and filling the temporary crown in one treatment; after three to four months, you can put on the formal denture, so use the above The dental implant treatment takes about half a year, and the patient can use the newly implanted denture to eat. The aforementioned dental implant method is not only invasive, but also has a high success rate. In addition to allowing the patient to lick a few times, the treatment time is more effectively shortened, which is very practical.

However, in order to achieve the above-mentioned rapid dental implants, traditional implants must first be drilled with different diameters by a drilling machine (commonly known as a dental handpiece, or a dental hand piece, or a dental drill) before implanting the alveolar bone. The drill bit digs the hole in the alveolar bone to embed the implant body in a stepwise and gradually expanding manner. As a result, the operation time is lengthened, the wound in the oral cavity is enlarged and deepened, and the patient is prolonged and the wound is more wounded. It is not easy to heal; in addition, repeatedly excavating the alveolar bone will greatly increase the chance of the dentist's mistakes, mis-drilling, and drilling too deep (the upper jaw will drill too deep into the sinus cavity, and the lower jaw will cut the facial nerve too deep). ).

In addition, in general, implants need to be bone-reinforcing to increase the bone mass around the implant. However, the bone surgery must be filled with the bone filler to the missing teeth, which will increase the cost of filling the bone powder.

Therefore, how to design a dental implant that can be combined with drilling and implanting, and discard the multiple implanting and gradually expanding method of implanting, thereby shortening the time of implant surgery, reducing oral trauma, or let the dentist When implanting a tooth, it is possible to guide the dental patient's own bone to a site with less bone or less bone, which is the goal of those skilled in the art.

The main purpose of the present invention is to allow the dentist to combine the disposable dental implants. The action of drilling the drill bit and the action of implanting the implant (also known as artificial root), thereby shortening the time of implant surgery, reducing the trauma of the oral cavity, thereby reducing the surgical pain of the dental patient and accelerating the healing time of the implant wound. .

Another object of the present invention is to eliminate the method of repeatedly excavating alveolar bone, multiple drilling, and gradually expanding the dental implant, thereby reducing the dentist's drilling machine (commonly known as dental handpiece, or dental hand piece, or dental drill). Mistakes, mis-drilling, and drilling too deep into the alveolar bone.

Another object of the present invention is to reduce the need or probability of filling the dental bone powder by guiding the bone to the boneless portion when the implant is used for tapping.

In order to solve the above and other problems, the present invention provides a dental implant structure comprising a body portion, a first threaded portion, a head portion, a plurality of second thread portions, and a plurality of side slits. Wherein the body portion defines a drilling axial direction in a longitudinal direction, the first threaded portion is located at one end of the body portion along the drilling axial direction, the head portion is located along the drilling axial direction of the body portion The other end portion; the second threaded portion has a pitch larger than the first threaded portion, and is disposed laterally on a radial side of the body portion, and the plurality of second threaded portions are disposed at different positions along the drilling axial direction, each a second threaded portion is provided on the different end portions of the rotation direction P of the implant structure to have a cutting surface and a bone accumulation surface; the side slit is disposed on the head and the radial side of the body portion And abutting the first threaded portion from the head through the plurality of cutting faces and the plurality of chip accumulation surfaces.

In order to solve the above and other problems, the present invention provides another dental implant structure including a body portion, a first thread portion, a head portion, a plurality of second thread portions, and a plurality of side slits. Wherein the body portion defines a drilling axial direction in a longitudinal direction, the first threaded portion is located at one end of the body portion along the drilling axial direction, the head portion is located along the drilling axial direction of the body portion The other end portion; the second thread portion has a pitch larger than the first thread portion, and is disposed at the a radial side of the body portion, the second threaded portion is rotatable along the drilling axial direction and forms a line J; the side slit is disposed on the head and the radial side of the body portion, and from the head The portion extends to the first threaded portion, and the tangent line J faces the one end portion of the drilling axial direction and has an angle Φ with the side slit, and satisfies Φ≦90 degrees.

The dental implant structure as described above, wherein the head includes a cusp having an inclination angle δ extending along the contour of the head and satisfying 0 ≦ δ ≦ 30 degrees.

The dental implant structure as described above, wherein the diameter H1 of the body portion near the head is less than or equal to the diameter H2 of the body portion away from the head; in a further embodiment, the side grooving distance of the head periphery The tip of the head has a spacing S and satisfies S/H1 ≦ 0.3.

The dental implant structure as described above, wherein the second threaded portion has a top portion, and the top portion lines of the plurality of second thread portions extend to intersect and define an angle Ψ 1, the body portion defines an axial section Angle Ψ 2, and meet Ψ 1≧Ψ 2.

The dental implant structure as described above, wherein the height of the second threaded portion adjacent to the head is less than or equal to the height of the second threaded portion away from the head.

The dental implant structure as described above, wherein the lateral groove width of the side slit adjacent to the head is greater than or equal to the lateral groove width of the side slit away from the head.

The dental implant structure as described above, wherein the side slit has a groove depth close to the head greater than or equal to a groove depth of the side slit away from the head.

The dental implant structure as described above, wherein the pitches of the plurality of second thread portions are equal, and the second thread portion has a cross-sectional width at the interface with the body portion, and the cross-sectional width near the head portion is smaller than Or equal to the cross-sectional width away from the head.

a dental implant structure as described above, wherein the second threaded portion has a top The top area is pointed, arcuate or polygonal.

The dental implant structure as described above, wherein the second threaded portion includes a main force receiving surface and a primary force receiving surface, the main force receiving surface is located adjacent to the head, and the secondary force receiving surface is located away from the head In the direction of the portion, the angle at which the main force surface is inclined is less than or equal to the angle at which the force surface is inclined.

The dental implant structure as described above, wherein the tip end of the head has a planar shape or an arc shape.

The dental implant structure as described above, wherein the tangent to the cutting face has an angle α 1 with the cutting face and satisfies 20 ≦ α 1 ≦ 90 degrees.

In the dental implant structure as described above, the cutting surface adjacent to the side of the side slit and the bone accumulation surface are in a circular arc shape without a fold.

The dental implant structure as described above, wherein the radius of the second threaded portion is greater than the radius of curvature of the cutting face.

Thereby, the beneficial effects of the dental implant structure of the present invention are as follows: 1. Avoiding the alveolar bone being subjected to multiple drilling and repeated excavation, thereby shortening the operation time of the dental implant, reducing the trauma of the oral cavity and the suffering of the patient. To shorten the time of healing of the implant wound; second, reduce the mistake of drilling the tooth, reduce the situation of mis-drilling or drilling too deep; 3. Guide the bone debris in the side slit to the vicinity of the head, and use the bone debris to Push the sinus membrane to reduce the chance of puncture the sinus membrane, and also fill the bones near the head of the implant structure or near the sinus membrane; Fourth, guide the bone debris in the side slit to The radial side of the dental implant structure is used to fill the loose side of the radial side of the implant; fifth, the use of autogenous bones to reduce the need for bone-filling powder; six, different structural design, can meet the different conditions of dentistry Patient.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings. For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

1‧‧‧ implant structure

11‧‧‧First threaded part

12‧‧‧Second thread

121‧‧‧Main force surface

122‧‧‧ times force surface

123‧‧‧cutting surface

124‧‧‧Bone dumping surface

125‧‧‧Top area

14‧‧‧ side grooving

149‧‧ ‧ points

15‧‧‧ head

156‧‧‧ cusp

A‧‧‧ cross-sectional area

D1, D2‧‧‧ transverse groove width

T1, T2‧‧‧ groove depth

F1, F2‧‧‧ height

G1, G2‧‧‧ pitch

J‧‧ tangential

K1, K2‧‧‧ cross width

H1, H2‧‧‧ diameter

Radius of R1‧‧

R3‧‧‧ radius of curvature

S‧‧‧ spacing

P‧‧‧Rotation direction

157‧‧‧Linear Department

158‧‧‧Arc Department

17‧‧‧Dental connectors

18‧‧‧ Body Department

91‧‧‧ alveolar bone

92‧‧‧ bone chips

Z‧‧‧ drilling into the axial direction

δ‧‧‧Tilt angle

α 1 , Φ, λ, θ 1 , θ 2‧‧‧ angle

Ψ 1, Ψ 2‧‧‧ angle

1A to 1E and 1H are different perspective views of a dental implant structure according to a first embodiment of the present invention.

FIG. 1F is a cross-sectional view taken along the line X-X of the embodiment of FIG. 1C.

1G is a cross-sectional view taken along the line Y-Y of the embodiment of FIG. 1C.

2A-2B are schematic views showing the use of the dental implant structure of the present invention for cutting the alveolar bone.

3A-3C are diagrams showing the drilling resistance effect of the dental implant structure of the present invention.

4 is a side view showing the structure of a dental implant according to a second embodiment of the present invention.

FIG. 5 is a schematic view showing the structure of a dental implant according to a third embodiment of the present invention.

Fig. 6A is a perspective view showing the structure of a dental implant according to a fourth embodiment of the present invention.

6B is a top plan view showing a structure of a dental implant according to a fourth embodiment of the present invention.

Figure 6C is a cross-sectional view of Figure 6A.

FIG. 7A is a perspective view of a dental implant structure according to a fifth embodiment of the present invention. Figure.

Fig. 7B is a front elevational view showing the structure of a dental implant according to a fifth embodiment of the present invention.

7C to 7D are plan views showing the structure of the dental implant according to the fifth embodiment of the present invention.

FIG. 7E is a schematic view showing the structure of an approximately implanted dental implant according to a fifth embodiment of the present invention.

8A-8B are schematic views of different configurations of the cutting surface of the dental implant structure of the present invention.

FIG. 8C is a diagram showing the corresponding relationship between the curvature radius of the cutting surface and the drilling resistance of FIGS. 8A to 8B.

9A-9B are schematic views of body portions of different size areas of the implant structure of the present invention.

FIG. 9C is a diagram showing the corresponding relationship between the cross-sectional area (A) of the body portion and the second thread portion of FIG. 9A to FIG. 9B and the drilling resistance.

Fig. 10A is a magnified view of the head of the implant structure of the present invention.

FIG. 10B is a diagram showing the corresponding relationship between the head tilt angle (δ) of FIG. 10A and the drilling resistance.

Fig. 11 is a magnified view of the head of the dental implant structure according to a sixth embodiment of the present invention.

FIG. 12 is a schematic diagram showing the appearance of a dental implant structure according to a seventh embodiment of the present invention.

FIG. 13 is a view showing the outline of the dental implant structure according to the eighth embodiment of the present invention; schematic diagram.

FIG. 14 is a schematic diagram showing the appearance of a dental implant structure according to a ninth embodiment of the present invention.

Figure 15 is a schematic view showing the outline of the dental implant structure according to the tenth embodiment of the present invention.

Figure 16 is a schematic view showing the outline of the dental implant structure according to the eleventh embodiment of the present invention.

FIG. 17 is a schematic view showing the outline of the dental implant structure according to the twelfth embodiment of the present invention.

18 to 22 are perspective views of a dental implant structure according to a thirteenth embodiment of the present invention.

Figure 23 is a cross-sectional view showing the structure of a dental implant according to a fourteenth embodiment of the present invention.

Figure 24 is a cross-sectional view showing the structure of a dental implant according to a fifteenth embodiment of the present invention.

Figure 25 is a cross-sectional view showing the structure of a dental implant according to a sixteenth embodiment of the present invention.

Fig. 26 is a perspective view showing the structure of a dental implant according to a sixteenth embodiment of the present invention.

Please refer to FIG. 1A to FIG. 1E and FIG. 1H, and FIG. 1A to FIG. 1E and FIG. Different angle views of the implant structure of the first embodiment of the invention. As shown in FIG. 1A to FIG. 1D , a dental implant structure 1 to be implanted into the alveolar bone 91 (shown in FIG. 1H ) includes a body portion 18 and a first thread portion 11 . a head 15, a plurality of second threaded portions 12 and two side slits 14. The body portion 18 defines a drilling axis Z in the longitudinal direction. The first threaded portion 11 is located at a lower end portion of the body portion 18 (one end portion of the drilling axial direction Z), and the head portion 15 is located at an upper end portion of the body portion 18 (the other end of the drilling axial direction Z) Therefore, the head portion 15 and the first threaded portion 11 are respectively located at different end portions of the body portion 18 along the drilling axial direction Z. Here, the first threaded portion 11 is a threaded structure that is continuously rotated around a plurality of turns. The tip end of the head 15 has an arc shape. The second threaded portion 12 has a pitch larger than the first threaded portion 11, that is, the pitch G2 of the second threaded portion 12 is greater than the pitch G1 of the first threaded portion 11 (as shown in FIG. 1B). In addition, the second threaded portion 12 is laterally disposed (generally corresponding to the horizontal direction) on the radial side of the body portion 18 such that the direction of each of the second threaded portions 12 (shown in FIG. 1D) is approximately horizontal; Here, each of the second threaded portions 12 is an arc-shaped thread segment (as shown in the cross-sectional views of FIGS. 1F and 1G). As shown in FIG. 1D, the second threaded portion 12 rotates along the drilling axial direction Z to form a line J, and the tangent line J of the second threaded portion 12 has an angle λ with the horizontal line (the tangent line J is roughly left lower right upward direction). Therefore, the dental implant structure 1 is rotated in a clockwise direction, and the dental implant structure 1 can be locked into the alveolar bone 91 of FIG. 1H. Here, the angle λ is generally less than 20 degrees, and therefore, the course of the second threaded portion 12 (ie, the direction of the tangent line J) is substantially close to or substantially laterally disposed. In this way, when the dental implant structure 1 is rotated in the center of the drilling axis Z, the dental implant structure 1 can be screwed into the alveolar bone 91 through the second threaded portion 12 in a stepwise manner. .

The plurality of second threaded portions 12 are disposed at different positions along the drilling axial direction Z, and each of the second threaded portions 12 is provided with a cutting on the different end portions of the rotational direction P of the dental implant structure 1. Face 123 and a bone accumulation surface 124. Here, the different end portions of the rotation direction P, that is, the end portions in the clockwise direction and the end portions in the counterclockwise direction; the specific structural features of the cutting surface 123 and the chip accumulation surface 124 are as shown in FIG. 1C and FIG. 1F. As shown in FIG. 1G, the XX section and the YY section are taken along the second threaded portion 12 on the implant structure 1, and the XX section is as shown in FIG. 1F, and the YY section is as shown in FIG. 1G. FIG. 1F and FIG. 1G show that the second threaded portion 12 is located radially outward of the main body portion 18, and each of the second threaded portions 12 has a substantially arc-shaped outer shape along the rotational direction P. The surface 123 and the chip accumulation surface 124 are located at the front and rear end portions of the second thread portion 12 in the rotation direction P (that is, the clockwise end portion and the counterclockwise end portion in the rotation direction P). Each of the front and rear end portions of each of the second threaded portions 12 in the rotation direction P is adjacent to one of the slits 14 and each of the side slits 14 is in front and rear portions along the rotation direction P, respectively The second threaded portions 12 are adjacent. Therefore, the second threaded portion 12 and the side slit 14 are alternately arranged around the circumference of the outer circumference of the body portion 18. The cutting surface 123 adjacent to either of the side slits 14 and the chip accumulation surface 124 are in contact with each other at a point 149. As shown in FIG. 1C, the side slit 14 has a lateral groove width D1 near the head portion 15, and the side slit groove 14 has a lateral groove width D2 away from the head portion 15, the lateral groove width. D1 is greater than or equal to the transverse groove width D2 (ie, D1≧D2), such that when the dental implant structure 1 is drilled and buried inside the alveolar bone 91, the side slit 14 is filled Full of bones 92, so that the amount of bone debris 92 deep in the alveolar bone 91 is more than that of the alveolar bone 91, thereby producing a relatively stable fixed structure for the dental implant structure 1 (the dental implant structure 1 is in the tooth) The inside of the trough 91 should be surrounded and covered by the bone or the bones 92. In addition, as shown in FIG. 1F and FIG. 1G, the side slit 14 has a groove depth T1 near the head portion 15, and the side slit groove 14 has a groove depth T2 away from the head portion 15, which is preferable. In an embodiment, the groove depth T1 is greater than the groove depth T2 (ie, T1>T2); thus, when the implant structure 1 is drilled and buried in the alveolar bone 91 When the side slits 14 are filled with the bone chips 92, the amount of the bone chips 92 in the deep part of the alveolar bone 91 (ie, FIG. 1F) is more than that of the alveolar bone 91 (ie, FIG. 1G), and the planting The tooth structure 1 produces a relatively stable fixed structure. Further, as shown in FIG. 1F, the tangent of the cutting surface 123 and the cutting surface 123 have an angle α1, and the magnitude of the angle α1 affects the lateral cutting of the second threaded portion 12 (cutting the implant structure) The difficulty of the radial side of 1).

As shown in FIG. 1B to FIG. 1D, the dental implant structure 1 is fixed, connected or coupled to a dental connector 17 through which the dental implant structure 1 can pass through the dental connector 17 and other external components. The structures are interconnected or disassembled/bonded. The side slit 14 is disposed on the radial side of the head portion 15 and the body portion 18, and passes through the plurality of cutting faces 123 and the plurality of bone debris collecting faces 124 from the head portion 15 to abut the first thread. In other words, the side slit 14 extends downward from the head 15 to abut the first threaded portion 11. As shown in the top view of FIG. 1E, the present embodiment is provided with two side slits 14 which are radiated outwardly from the central head portion 15 and have a curved arc shape. As shown in FIG. 1D, the tangent line J of the second threaded portion 12 faces the upper end portion of the drilling axial direction Z and has an angle Φ with the side slit 14 at an angle Φ of less than or equal to 90 degrees (ie, Φ). ≦90 degrees); in this way, when the implant structure 1 of the present embodiment is locked into the alveolar bone 91, the cutting surface 123 of the second threaded portion 12 moves in the direction of the tangent J, And pushing the bone chips 92 in the direction of the tangent line J; at this time, the left groove wall (consisting of the plurality of cutting faces 123) of the side slits 14 provides the bone chips 92 because of the inclined angle Φ. A downward component of force causes the bone fragments 92 to move progressively downward (away from the head 15) along the side slits 14. When the bone fragments 92 are gradually moved downward (in a direction away from the head 15), if the radial sides of the implant structure 1 (i.e., the left and right sides of FIG. 1D) are loose, the bone The chips 92 can be squeezed to fill the loose portions of the radial sides. That is, the bone 92 The loose bone portion that can be guided and filled to the radial side of the dental implant structure 1 can make the bone covered around the dental implant structure 1 more dense (increased bone density), thereby making the dental implant body The cladding structure of structure 1 is more stable. In addition, since the patient's autologous bone chips 92 are filled to the radial side of the implant structure 1, the need for bone-reinforcing powder can be reduced, thereby reducing the cost of implanting teeth.

As shown in FIG. 1B, the body portion 18 has a diameter H1 near the head portion 15. The body portion 18 has a diameter H2 away from the head portion 15. In the embodiment, the diameter H1 is smaller than the diameter. H2 (H1 < H2), that is, the body portion 18 forms a diverging shape from the head portion 15 toward the first thread portion 11. In addition, the head portion 15 and the body portion 18 are in a folded shape (as shown in an enlarged view of FIG. 1B). As shown in FIG. 1H, the side slit 14 at the periphery of the head portion 15 has a distance S from the top end of the head portion 15. Generally, the spacing S needs to satisfy the formula of S/H1 ≦ 0.5; In the preferred embodiment, S/H1 ≦ 0.3. Here, if the spacing S satisfies the formula of S/H1 ≦ 0.3, it means that the spacing S is small, that is, the side slit 14 is relatively close to the top end of the dental implant structure 1 (the lower end of FIG. 1H); When the implant structure 1 is rotated in the rotation direction P, the side slit 14 can be relatively easily cut into the alveolar bone 91 below the implant structure 1, thereby causing the implant structure 1 to be produced. The effect of the downward cutting is such that the dental implant structure 1 is locked toward the depth of the alveolar bone 91. When the implant structure 1 is locked into the alveolar bone 91, the head having a circular arc-shaped tip is subjected to the bite force of the chew food (the chewing biting force generally applies a vertical force to the head), The impact force or the impact force of the bite force on the alveolar bone 91 can be buffered or offset, and the impact force and the impact force of the bite food can be prevented from being concentrated at a certain point, and the stress concentration of the alveolar bone 91 is destroyed. .

In addition, please refer to the cross-sectional view of FIG. 2A. When the head 15 of the dental implant structure 1 cuts the alveolar bone 91, the cutting surface 123 can be the alveolar bone 91 around it. The scraping is performed, and the scraped bone chips 92 are accumulated in the side slits 14; when the dental implant structure 1 continues to rotate along the rotation direction P, the cutting surface 123 can push the cutting surfaces 123 The bone chips 92 guide the bone chips 92 to the osteoporosis of the radial side of the implant structure 1 (see the description of Fig. 1D).

In addition, please refer to the schematic diagram of FIG. 2B. When the second threaded portion 12 of the dental implant structure 1 rotates in the alveolar bone 91, the alveolar bone 91 can also be cut, that is, the second thread. The cutting surface 123 at the end of the portion 12 also scrapes the alveolar bone 91 or pushes the bone fragments 92.

Next, FIG. 3A to FIG. 3C are diagrams showing the drilling resistance effect of the dental implant structure of the present invention. As shown in FIG. 3A and FIG. 1B and FIG. 1H, the larger the value of S/H1 (the larger the distance S is), the more the drilling resistance of the implant structure 1 drilling deep into the alveolar bone 91 is. Big. As shown in FIG. 3B and FIG. 1F, the closer the angle α 1 is to 90 degrees, the greater the drilling resistance of the implant structure 1 drilling deep into the alveolar bone 91, thus rotating the dental implant structure 1 The rotational torque must also be increased; the smaller the angle α 1 is, the smaller the drilling resistance of the implant structure 1 drilling deep into the alveolar bone 91 (but the second threaded portion 12 is more likely to collapse) Bad, broken). In general, the angle α 1 between the tangent line of the cutting surface 123 and the cutting surface 123 preferably satisfies 20 ≦ α 1 ≦ 90 degrees in order to balance the drilling resistance with the material strength of the second thread portion 12 . The ability to resist stress concentration. As shown in FIG. 3C and FIG. 1F, the outermost portion of the second threaded portion 12 has a radius R1 from the center of the body portion 18. The closer the value of T1/R1 is to 1.0 (representing the greater the groove depth T1), the cutting surface The greater the 123, the greater the penetration resistance of the implant structure 1 into the depth of the alveolar bone 91.

Please refer to FIG. 4. FIG. 4 is a side view showing the structure of the dental implant according to the second embodiment of the present invention. As shown in FIG. 4, the second threaded portion 12 of the dental implant structure 1 rotates along the drilling axis Z. And forming a line J, the tangent line J of the second threaded portion 12 and the horizontal line have an angle λ, the tangent line J is generally left lower right and upper right; the tangent line J of the second thread portion 12 faces the lower end portion of the drilling axis Z The angle Φ is not less than or equal to 90 degrees (that is, Φ ≦ 90 degrees). In this way, when the implant structure 1 of the present embodiment is locked into the alveolar bone 91 in a clockwise rotation, the cutting surface 123 of the second threaded portion 12 moves in the direction of the tangent J. The bone chips 92 are pushed in the direction of the tangent J. At this time, the left groove wall of the side slit 14 (consisting of the plurality of cutting faces 123) has an inclined component angle Φ, so that the component of force of the bone chip 92 is provided. The bone chips 92 will move progressively upward (toward the head 15) along the side slits 14. In the case of dental surgery, if it is required to push the sinus or bone-reinforcing powder, the bone chips 92 can be gradually pushed upward (toward the direction of the head 15), so that the bone chips 92 are squeezed, Moves and fills the direction of the head 15 (eg, near the sinus membrane), so the dentist can fill the autogenous bone fragments 92 to the vicinity of the head 15 of the implant structure 1; or, The bone fragments 92 moving in the direction of the head 15 push the sinus membrane. In this way, if the condition of the dental implant is encountered, there is no need to fill in the bone powder, so the need to fill the bone powder can be reduced, the cost of the implant can be reduced, and the probability of puncture the sinus membrane is also reduced. Thereby, the implant structure 1 of the present embodiment can guide and fill the bone chips 92 to the upper end portion of the implant structure 1 (close to the head portion 15) through the inclined arrangement of the side slits 14. And, through the bone chips 92, the sinus membrane is pushed and pushed up, and the patient's own bone fragments 92 are filled into the vicinity of the head 15 of the implant structure 1 or near the sinus membrane of the patient.

As described above, the dental implant structure 1 of FIGS. 1A to 1H has an angle Φ of less than 90 degrees with the side slit 14 because the tangent line J of the second threaded portion 12 faces the head portion 15. Therefore, the bone chips 92 in the side slits 14 can be made downward by the inclination angle Φ. Using force components, moving gradually away from the head 15; whereby the implant structure 1 of FIGS. 1A-1H can guide the bone chips 92 to the radial sides for filling the radial direction. The loose bones on the sides. It is compared with the dental implant structure 1 of FIG. 4 because the tangent line J of the second threaded portion 12 is less than 90 degrees with the side slit 14 in the direction toward the lower end portion (the direction away from the head portion 15). The angle Φ, so the bone chips 92 in the side slits 14 can be moved toward the direction of the head 15 by the upward acting component force provided by the inclination angle Φ; thereby, if encountered When it is necessary to push the sinus or bone supplement, the implant structure 1 of Fig. 4 can guide the bone debris 92 to the vicinity of the head 15, and use the bone chips 92 to push the sinus membrane or fill the head. Osteoporosis near 15.

There are still other embodiments of the present invention. Please refer to FIG. 5. FIG. 5 is a schematic diagram showing the structure of a dental implant according to a third embodiment of the present invention. As shown in FIG. 5 and its enlarged view, the head portion 15 and the body portion 18 are in a circular arc shape without a fold, so that the head portion 15 of the implant structure 1 is deep toward the alveolar bone 91. At the time of drilling, a relatively small frictional resistance can be generated at the boundary between the head 15 and the body portion 18, which facilitates implantation of the implant structure 1 into the alveolar bone 91. Further, the tip end of the head portion 15 of the implant structure 1 of the present embodiment is planar, so that when the implant structure 1 is embedded in the alveolar bone 91, the gentle head portion 15 can disperse the food produced by chewing food. The bite impact force (because the pressure is inversely proportional to the area of the force).

6A to FIG. 6C, FIG. 6A is a perspective view of a dental implant structure according to a fourth embodiment of the present invention, and FIG. 6B is a top view of the dental implant structure according to the fourth embodiment of the present invention. 6C is shown as a cross-sectional view of FIG. 6A. As shown in the figure, the dental implant structure 1 of the present embodiment is provided with three side slits 14 on the radial side of the head portion 15 and the body portion 18.

Please refer to FIG. 7A to FIG. 7D , FIG. 7A illustrates a plant according to a fifth embodiment of the present invention. FIG. 7B is a front view of the dental implant structure according to the fifth embodiment of the present invention, and FIGS. 7C-7D are top views of the dental implant structure according to the fifth embodiment of the present invention. . As shown in FIG. 7A and FIG. 7B, the dental implant structure 1 of the present embodiment has a plurality of second threaded portions 12 rotated along the drilling axial direction Z to form a line J, and a tangent line J of the second threaded portion 12. An angle λ is sandwiched from the horizontal line (the tangent line J is roughly in the upper left and lower right directions), so that the dental implant structure 1 can be rotated counterclockwise, and the dental implant structure 1 is locked into the alveolar bone 91. Here, the implant structure 1 of the present embodiment has to be locked in a counterclockwise direction when it is drilled into the alveolar bone 91 of the patient, and it is locked clockwise according to FIG. 1D, so it is known that The clockwise locking or counterclockwise locking of the dental implant structure 1 is determined by the oblique direction of the tangent J of the second threaded portion 12. Further, four side slits 14 are provided on the radial side of the head portion 15 and the body portion 18, and the tangent line J of the second thread portion 12 faces the upper end portion of the drilling axial direction Z and is cut with the side The slot 14 has an angle Φ which is less than or equal to 90 degrees (i.e., Φ ≦ 90 degrees); therefore, when the implant structure 1 of the embodiment is locked into the alveolar bone 91, the second The cutting face 123 of the threaded portion 12 moves in the direction of the tangent J and pushes the bone chips 92 in the direction of the tangent J. At this time, the right groove wall of the side slit 14 (consisting of the plurality of cutting faces 123) has a downward angle of component Φ, so that the component of force of the bone chip 92 is provided. The bone chips 92 will move progressively downward (away from the head 15) along the side slits 14. Thereby, the bone chips 92 can be guided and filled to the loose side of the radial side of the implant structure 1, and the bone covered by the periphery of the implant structure 1 is more dense and stable, thereby Reduce the need for bone supplements in patients, thereby reducing the cost of implants. In addition, FIG. 7C and FIG. 7D illustrate different configurations of the side slits 14 and the heads 15 of different configurations, the side slits 14 being disposed around the circumference of the head portion 15 .

Please refer to FIG. 7E again. FIG. 7E illustrates the approximate edge of the fifth embodiment of the present invention. A schematic view of the structure of the implanted dental body; wherein the second threaded portion 12 of the dental implant structure 1 of FIG. 7E rotates along the drilling axis Z and forms a line J, the tangent J of the second threaded portion 12 and the horizontal clamp There is an angle λ, and the tangent line J is roughly left upper right and lower right. The tangent line J of the second threaded portion 12 faces the lower end portion of the drilling axial direction Z and has an angle Φ with the side slit 14 at an angle Φ of 90 degrees or less (that is, Φ ≦ 90 degrees). In this way, when the dental implant structure 1 of the embodiment is locked into the alveolar bone 91, the cutting surface 123 of the second threaded portion 12 moves along the direction of the tangent J and faces the tangent J. Direction to push the bone chips 92. At this time, the right groove wall of the side slit 14 (consisting of the plurality of cutting faces 123) has an inclined component angle Φ, so that the component of force of the bone chip 92 is provided. The bone chips 92 will move progressively upward (toward the head 15) along the side slits 14. In the case of dental surgery, if it is required to push the sinus or bone-reinforcing powder, the bone chips 92 can be gradually pushed upward (toward the direction of the head 15), so that the bone chips 92 are squeezed, The sinus membrane in the direction of the head 15 or the vicinity of the head 15 is moved and filled.

Further, in addition to the change in the direction of the side slits 14 and the second threaded portions 12, the configuration of the body portion 18 and the second thread portion 12 naturally affects the drilling effect of the implant structure 1. Please refer to FIG. 8A to FIG. 8B . FIG. 8A to FIG. 8B are schematic diagrams showing different configurations of the cutting surface of the implant structure of the present invention. In the embodiment of FIG. 8A, the periphery of the body portion 18 is surrounded by three side slits 14 and three second thread portions 12, and each of the sides of the slits 14 is adjacent to a cutting surface 123 and a The cutting surface 123 of the second threaded portion 12 has a radius of curvature R3, and the tangent of the cutting surface 123 has an angle α1 with the cutting surface 123, and the angle α 1 is about 25~ At 60 degrees, it is possible to have a fairly good cutting effect, and at the same time, the mechanical strength of the second threaded portion 12 can be balanced (in practice, 60 ≦ α 1 ≦ 90 degrees is also feasible). In the present embodiment, the radius of curvature R3 of the cutting face 123 is smaller than the radius R1 of the second threaded portion 12 (that is, R3 < R1). In addition, the space occupied by the side slits 14 (i.e., the cross-sectional area of the side slits 14) is larger than that of the embodiment of FIG. 6C. Therefore, the side slits 14 of the present embodiment can accommodate more bone chips 92. In this way, when the true tooth root that is removed or broken and is removed is thinner or smaller (representing more bone around the root of the real tooth), the dental implant structure 1 of Fig. 8A can be used. A larger amount of bone chips 92 is accommodated by the side slits 14 having a larger space. Referring to the embodiment of FIG. 8B at the same time, the cutting surface 123 of the second threaded portion 12 is a flat surface, so that the radius of curvature R3 of the cutting surface 123 is infinite. Comparing the drilling resistance of the dental implant structure 1 of FIGS. 8A and 8B, as shown in FIG. 8C, the dental implant structure 1 is drilled into the alveolar bone 91 as the curvature radius R3 of the cutting surface 123 increases. The drilling resistance is also greater; the reason is that the curveder cutting surface 123 (the smaller the radius of curvature R3) can guide the bone 92 to move slightly in the radial axis. In addition, in the embodiment of FIG. 8A, both the cutting surface 123 and the bone debris accumulation surface 124 have an arc-shaped cross section, and the adjacent cutting surface 123 and the bone debris accumulation surface 124 of the side slit 14 are adjacent to each other. The joints are connected in a 149-like manner; in the embodiment of FIG. 8B, the cutting surface 123 and the bone-grain stacking surface 124 are linear in cross section, and the cutting faces 123 adjacent to the periphery of the side slits 14 are The junctions of the bone accumulation surface 124 are connected without a fold. Here, the adjacent cutting surface 123 and the bone debris accumulation surface 124 are in the shape of no folds, which is advantageous for guiding the bone chips 92 in the side slits 14 .

Referring to FIG. 9A to FIG. 9C , FIG. 9A to FIG. 9B are schematic diagrams showing body parts of different sizes of the implant structure of the present invention, and FIG. 9C is a view of the body portion 18 of FIG. 9A to FIG. 9B. The function diagram of the correspondence between the cross-sectional area (A) of the two threaded portions 12 and the drilling resistance. Wherein, the space of the side slit 14 of FIG. 9A is larger than the space of the side slit 14 of FIG. 9B, and therefore, the cross-sectional area (A) of the body portion 18 of FIG. 9A plus the three second thread portions 12 is larger than that of FIG. 9B. The case is even smaller. After the points The cross-sectional area (A) of the body portion 18 plus the plurality of second thread portions 12 also affects the effect of the implant structure 1 drilling deep into the alveolar bone 91; as shown in FIG. 9C, The radius R1 of the outermost periphery of the second threaded portion 12 is a circle, and the area of the circle is π * R1 * R1, so that the cross-sectional area of the sum of the plurality of second thread portions 12 is added to the body portion 18 (A) Dividing the ratio of the circular area π * R1 * R1, if the closer to 1.0 (that is, the smaller the space representing the side slit 14 is, the larger the sectional area (A) is), the dental implant structure 1 is drilled into the alveolar space. The greater the drilling resistance in the depth of the bone 91; the reason is that when the dental implant structure 1 is drilled into the alveolar bone 91, the bone debris 92 is surely generated, and if there is no space for accommodating the bone debris 92, Increasing the difficulty of drilling the implant structure 1 .

Please refer to FIG. 10A to FIG. 10B , FIG. 10A is a magnified view of the head of the implant structure of the present invention, and FIG. 10B is a diagram showing the corresponding relationship between the tilt angle (δ) of the head of FIG. 10A and the drilling resistance. Figure. As shown, the head 15 of the dental implant structure 1 includes a sharp point 156 that extends along the contour of the head 15 to have an angle of inclination δ. In general, the inclination angle δ is too large (i.e., the head 15 is too pointed), and the implant structure 1 is likely to be at the cusp 156 when the occlusal force of the chewable food is received in the alveolar bone 91. Where stress concentration occurs, the destructive force and impact force of the stress concentration tend to cause the alveolar bone 91 to be injured; if the inclination angle δ is too small (that is, the head 15 is too blunt), the implant structure 1 The greater the resistance to drilling in the direction of the alveolar bone 91 is not conducive to the dentist's dental implant surgery (as shown in Figure 10B). According to the analysis, if the inclination angle δ satisfies 0 ≦ δ ≦ 30 degrees, it is possible to have both the drilling effect and the stress concentration.

Referring to FIG. 11, FIG. 11 is an enlarged view of a head of a dental implant structure according to a sixth embodiment of the present invention. As shown in the cross-sectional view of the dental implant structure 1 of Fig. 11, the head portion 15 includes a straight portion 157 and an arc portion 158 which is connected to the cusp 156 to have an inclination angle δ, which is an arc. The portion 158 is located outside the straight portion 157. In other embodiments, the head 15 may also be provided without a sharp point 156, such that the cross section at the center of the head 15 is curved or planar, and a straight line or an arc of different curvature is directly connected outside the arc or plane, so that the head 15 has a cross section. The configuration of the line segment.

Please refer to FIG. 12. FIG. 12 is a schematic diagram showing the outline of the dental implant structure according to the seventh embodiment of the present invention. As shown in Fig. 12, the body portion 18 of the dental implant structure 1 has a diameter H1 near the head portion 15 and a diameter H2 away from the head portion 15. The diameter H1 is equal to the diameter. The size of H2 (ie, H1 = H2). In addition, the pitches G2 of the plurality of second threaded portions 12 are equal (whether close to or away from the head portion 15), so that the dental implant structure 1 can be ensured to rotate in the rotational direction P. The depth of the alveolar bone 91 is drilled a distance of a pitch G2. The second threaded portion 12 has a cross-sectional width K1, K2 at the junction with the body portion 18; the cross-sectional width K1 near the head portion 15 is equal to the cross-sectional width K2 away from the head portion 15 (ie, K1 = K2). In other embodiments, the cross-sectional width K1 near the head 15 may also be smaller than the cross-sectional width K2 away from the head 15 (ie, K1 < K2), such that with the implant structure 1 Being drilled into the interior of the alveolar bone 91, the second threaded portion 12 can increase the surface area in contact with the alveolar bone 91 by an increasingly larger cross-sectional width K2, the surface area increasing representing friction or the planting The osseous integration area of the dental structure 1 is increased, and the overall mechanical strength of the dental implant structure 1, or the bite force against the chewing food, will of course be greater.

Please refer to FIG. 13. FIG. 13 is a schematic diagram showing the outline of the dental implant structure according to the eighth embodiment of the present invention. In the dental implant structure 1 of the present embodiment, the diameter H1 of the body portion 18 adjacent to the head portion 15 is equal to the diameter H2 of the body portion 18 away from the head portion 15 (that is, H1 = H2). As for the second threaded portion 12 of the present embodiment, the second threaded portion 12 adjacent to the head portion 15 has a height F1, and the second threaded portion 12 remote from the head portion 15 has a height F2, wherein the height F1 is less than the height F2 (ie, F1 < F2). Because F1 is smaller than F2, the top region 125 of the plurality of second threaded portions 12 on the left and right sides of the implant structure 1 intersects and extends, and an angle Ψ 1 is defined; generally, the angle Ψ 1 is less than about 30 degrees. According to the same principle, the implanted body structure 1 of the present embodiment is drilled deeper into the alveolar bone 91, and the second threaded portion 12 can be increased with the alveolar bone by a higher and higher height F2. The surface area of contact, which in turn increases the friction of the overall implant structure 1 and the surface area of the osseointegration, and the implant structure 1 also increases the overall mechanical strength and resistance to food occlusion. In other embodiments, the height F1 of the second threaded portion 12 adjacent the head 15 may also be equal to the height F2 of the second threaded portion 12 remote from the head 15 (ie, F1 = F2).

Please refer to FIG. 14. FIG. 14 is a schematic diagram showing the outline of the dental implant structure according to the ninth embodiment of the present invention. As shown in FIG. 14, after the top regions 125 of the plurality of second threaded portions 12 of the present embodiment are extended, they intersect and define an angle Ψ 1, which satisfies 0<Ψ 1<30 degrees. The body portion 18 is sectioned along the axial direction of the implant structure 1 (i.e., the aforementioned drilling axial direction Z), that is, an angle Ψ 2 is defined by the side of the body portion 18. Here, the present embodiment satisfies Ψ 1≧Ψ 2. Further, the diameter H1 of the body portion 18 of the present embodiment near the head portion 15 is smaller than the diameter H2 of the body portion 18 away from the head portion 15; the height F2 is greater than the height F1; and the cross-sectional width K2 is greater than or equal to the cross-sectional width K1. (ie, H1 < H2, F2 > F1, K2 ≧ K1).

Referring to FIG. 15 to FIG. 17, FIG. 15 is a schematic diagram showing the appearance of the dental implant structure according to the tenth embodiment of the present invention, and FIG. 16 is a view showing the appearance of the dental implant structure according to the eleventh embodiment of the present invention. FIG. 17 is a schematic view showing the outline of the dental implant structure according to the twelfth embodiment of the present invention. As shown in FIG. 15, the second threaded portion 12 of the dental implant structure 1 has a top portion 125 having a pointed shape; as shown in FIG. 16, the top portion 125 of the second threaded portion 12 is In the shape of a fold line; as shown in FIG. 17, the top portion 125 of the second threaded portion 12 has an arc shape. in The second threaded portion 12 further includes a main force receiving surface 121 and a primary force receiving surface 122. The main force receiving surface 121 is located adjacent to the head portion 15 , and the secondary force receiving surface 122 is located away from the head portion 15 . In the direction, the main force receiving surface 121 and the horizontal line have an angle θ 1 (that is, the degree of inclination of the main force receiving surface 121), and the secondary force receiving surface 122 has an angle θ 2 with the horizontal line (ie, the secondary force receiving surface 122) The degree of tilt). In general, θ 1 is equal to θ 2 ; but in the preferred embodiment, θ 2 is greater than θ 1 such that when the implant structure 1 is drilled into the alveolar bone 91, the second The threaded portion 12 can withstand a relatively large chewing bite force by the relatively flat main force receiving surface 121 (because the main force receiving surface 121 generates only a small lateral component when resisting the chewing bite force in the vertical direction) .

Referring to FIG. 18 to FIG. 22, FIG. 18 to FIG. 22 are perspective views of a dental implant structure according to a thirteenth embodiment of the present invention. Here, the present embodiment shows the dental implant structure 1 of the present invention, which can be applied, connected, coupled or disposed on a variety of different dental connectors 17, which can be dental supports of different configurations, a dental abutment, a dental tool or a connection structure, a snap-fit structure or a cassette structure for disassembly/connection, and the dental implant structure 1 and the dental connector 17 may be of a fixed arrangement type or a detachable type ( The dental implant structure 1 and the dental connector 17 shown in FIGS. 18 to 22 are in a fixed arrangement).

Referring to FIG. 23, FIG. 23 is a cross-sectional view showing the structure of a dental implant according to a fourteenth embodiment of the present invention; the dental implant structure 1 of the present embodiment has four side slits 14 and each side slit 14 The cross-sections are all semi-circular, that is, the cutting faces 123 adjacent to the periphery of each of the side slits 14 and the chip-distributing surface 124 are arcs having the same radius of curvature. Referring to FIG. 24, FIG. 24 is a cross-sectional view showing the structure of a dental implant according to a fifteenth embodiment of the present invention; the dental implant structure 1 of the present embodiment has three side slits 14 and each side slit 14 The adjacent cutting faces 123 and the chip accumulation faces 124 are arcs having different curved surfaces. Referring to FIG. 25, FIG. 25 illustrates a dental implant knot according to a sixteenth embodiment of the present invention. The dental implant structure 1 of the present embodiment has five side slits 14, and the cutting surface 123 adjacent to the periphery of each side slit 14 and the bone debris accumulation surface 124 have a planar structure. It is to be noted that the dental implant structure 1 of the present invention may have two, three, four, five or more side slits 14 in any of the above embodiments, and the cutting surface 123 and the bone chips The shape and contour of the stacking surface 124 may also be the configuration of any of the above embodiments.

Referring to FIG. 26, FIG. 26 is a perspective view showing the structure of the dental implant body according to the sixteenth embodiment of the present invention; as shown in FIG. 26, the side slit 14 of the present embodiment is substantially parallel to the drilling axial direction Z. That is, the side slit 14 is located on the radial side of the head portion 15 and the body portion 18 and is substantially vertical. In detail, if the diameter H1 of the body portion 18 is equal to the diameter H2 of the body portion 18 (as shown in FIG. 12), the side slits 14 are parallel to the drilling axial direction Z; if the diameter of the body portion 18 is H1 is smaller than the diameter H2 of the body portion 18 (as shown in FIG. 1B), and the side slit 14 is sandwiched by the drilling axis Z by a small angle. Here, the structural relationship between the second threaded portion 12, the side slits 14, the head portion 15, and the body portion 18 of the present embodiment can be as described above, and therefore will not be described again.

Thereby, the dental implant structure 1 of the present invention allows the dentist to directly lock the dental implant structure 1 into the alveolar bone 91 by means of rotational locking, without the need to pass through the drilling machine (commonly known as dentistry). The mobile phone, or dental hand piece, or dental drill) repeatedly drills and repeatedly digs the alveolar bone 91, thereby shortening the time of dental implant surgery, reducing the trauma of the oral cavity and the suffering of the patient, and shortening the healing time of the implant wound. In addition, the indirect benefit of avoiding multiple drilling and repeated excavation of the alveolar bone 91 is to reduce errors, reduce the risk of mis-drilling or drilling too deep (drilling too deep may dig the facial nerve or cut through the sinus membrane). Further, the dental implant structure 1 of the present invention is provided with a direction angle Φ provided by the side slits 14, and the side slits 14 are extended from the head portion 15 to the first threaded portion 11, thereby causing bone chips 92 can be guided into the side slit 14 near the head 15 (as shown in FIG. 4) Or the radial side of the dental implant structure 1 (as shown in FIG. 1D), the patient's autologous bone fragments 92 can be used to push the sinus membrane or replace the bone-filling powder to meet different conditions of the dental patient. Therefore, the dental implant structure 1 of the present invention has a dental medical potential for realizing the application.

The present invention has been described above by way of examples, and is not intended to limit the scope of the claims. The scope of patent protection is subject to the scope of the patent application and its equivalent fields. Modifications or modifications made by those skilled in the art, without departing from the spirit or scope of the invention, are equivalent to the equivalents or modifications made in the spirit of the invention and should be included in the following claims. Inside.

1‧‧‧ implant structure

11‧‧‧First threaded part

12‧‧‧Second thread

123‧‧‧cutting surface

124‧‧‧Bone dumping surface

14‧‧‧ side grooving

15‧‧‧ head

17‧‧‧Dental connectors

18‧‧‧ Body Department

J‧‧ tangential

P‧‧‧Rotation direction

Z‧‧‧ drilling into the axial direction

Φ, λ‧‧‧ angle

Claims (16)

A dental implant structure comprising: a body portion (18) defining a drilling axial direction (Z) in a longitudinal direction; a first threaded portion (11) located along the drilling axis of the body portion (18) a one end portion of (Z); a head portion (15) located at the other end portion of the body portion (18) along the drilling axial direction (Z); and a plurality of second thread portions (12) having Larger than the pitch of the first threaded portion (11), and laterally disposed on a radial side of the body portion (18), the plurality of second threaded portions (12) are disposed at different positions along the drilling axis (Z) Each of the second threaded portions (12) is provided with a cutting surface (123) and a bone accumulation surface (124) at different end portions of the rotation direction (P) of the dental implant structure (1); a strip side slit (14) is disposed on the radial side of the head portion (15) and the body portion (18), and passes through the plurality of cutting faces (123) and the plurality of bones from the head portion (15) The chip accumulation surface (124) is coupled to the first threaded portion (11). A dental implant structure comprising: a body portion (18) defining a drilling axial direction (Z) in a longitudinal direction; a first threaded portion (11) located along the drilling axis of the body portion (18) a one end portion of (Z); a head portion (15) located at the other end portion of the body portion (18) along the drilling axial direction (Z); and a plurality of second thread portions (12) having Larger than the pitch of the first threaded portion (11), and disposed on a radial side of the body portion (18), the second threaded portion (12) is rotatable along the drilling axis (Z) and forms a line (J); a plurality of side slits (14) disposed on the radial side of the head (15) and the body portion (18), and The head portion (15) extends to abut the first threaded portion (11), and the tangent line (J) faces an end portion of the drilling axial direction (Z) and has an angle Φ with the side slit (14) And meet Φ ≦ 90 degrees. The implant structure of claim 1 or 2, wherein the head (15) includes a sharp point (156) extending along a contour of the head (15) to have a tilt angle δ, and satisfy 0≦δ≦30 degrees. The implant structure according to claim 1 or 2, wherein the diameter H1 of the body portion (18) adjacent to the head portion (15) is less than or equal to the diameter of the body portion (18) away from the head portion (15) H2. The implant structure according to claim 4, wherein the side slit (14) of the periphery of the head (15) has a distance S from the tip end of the head (15) and satisfies S/H1 ≦ 0.3. The dental implant structure of claim 1 or 2, wherein the second threaded portion (12) has a top portion (125), and the top portion (125) of the plurality of second threaded portions (12) extends in a line Intersecting and defining an angle Ψ 1, the body portion (18) defines an angle Ψ 2 in the axial section and satisfies Ψ 1 ≧Ψ 2 . The dental implant structure of claim 1 or 2, wherein a height (F1) of the second threaded portion (12) adjacent to the head (15) is less than or equal to a second thread away from the head (15) The height of the part (12) (F2). The implant structure according to claim 1 or 2, wherein the lateral groove width (D1) of the side slit (14) adjacent to the head (15) is greater than or equal to the side slit (14) away from the head The lateral groove width (D2) of the part (15). The dental implant structure according to claim 1 or 2, wherein a groove depth (T1) of the side slit (14) adjacent to the head (15) is greater than or equal to the side slit (14) away from the head (15) The groove depth (T2). The dental implant structure according to claim 1 or 2, wherein the pitches (G2) of the plurality of second threaded portions (12) are equal, and the second threaded portion (12) is opposite to the body portion (18) Connection has a cross width (K1, K2), the cross-sectional width (K1) near the head is less than or equal to the cross-sectional width (K2) away from the head. The dental implant structure according to claim 1 or 2, wherein the second threaded portion (12) has a top portion (125) having a pointed shape, an arc shape or a broken line shape. The dental implant structure according to claim 1 or 2, wherein the second threaded portion (12) includes a main force receiving surface (121) and a primary force receiving surface (122), the main force receiving surface (121) Located in a direction adjacent to the head (15), the secondary force receiving surface (122) is located away from the head (15), and the angle (θ 1) of the main force receiving surface (121) is less than or equal to the time The angle at which the force surface (122) is inclined (θ 2). The dental implant structure according to claim 1 or 2, wherein the tip end of the head (15) has a planar shape or an arc shape. The implant structure according to claim 1, wherein the tangent of the cutting surface (123) has an angle α 1 with the cutting surface (123) and satisfies 20≦α 1≦90 degrees. The implant structure according to claim 1, wherein the cutting surface (123) adjacent to the side of the side slit (14) and the bone accumulation surface (124) are in a circular arc without a fold. The dental implant structure of claim 1, wherein the radius (R1) of the second threaded portion (12) is greater than the radius of curvature (R3) of the cutting surface (123).