Dental implant for implanting turbinate crest

Abstract

The invention relates to the technical field of oral implanting, in particular to a dental implant for implanting a turbinate crest, one end of the dental implant is provided with a station hole for mounting an abutment, and the dental implant is suitable for being implanted into the turbinate crest of the maxillary bone. According to the dental implant, damage to soft and hard tissues in the implanting process can be reduced, the initial and long-term stability of the dental implant is improved, and the combination effect of the dental implant and bone tissues is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of oral implantation, and more particularly to a dental implant for nasal turbinate ridge implantation. Background Art

[0002] According to the survey, the proportion of edentulous people aged 65-74 in my country is 4.5%. The international academic community has proposed five classifications based on the height and width of the available bone in the front and back of the jaw. Among them, Class IV is severely atrophic edentulous jaw, accounting for 27.1% of the edentulous maxilla. This group of severely atrophic edentulous jaw patients cannot use conventional dental implants to repair missing teeth and restore the daily beauty and function of the oral cavity.

[0003] The dental implant products currently on the market can only meet the needs of patients with normal jaw conditions to perform dental implant surgery to treat edentulous and missing teeth. When the jaw condition is severely atrophied, we need to find other adjacent anatomical conditions outside the jaw to help place and stabilize dental implants to meet the needs of dentists in treating and repairing patients with edentulous and missing teeth.

[0004] According to anatomy and literature verification, the nasal ridge area is a high-quality anatomical resource that can be used for dental implants. The bone structure and morphology of the nasal ridge area are relatively unique and can be used to implant special implants, such as Figure 1 As shown in Figure 1, the nasal ridge is located deep in the maxilla, close to the nasal cavity, and has a complex physiological structure. Figure 2 , Figure 3 The patient's CBCT image shows the turbinate ridge in yellow. The image also shows the sizes obtained from various distance measurements. The volume of the turbinate ridge (approximately 3-5.5mm) is cortical bone, which can withstand greater occlusal forces and can meet the functional requirements of immediate repair in implant surgery to achieve clinical application.

[0005] Currently, there is no implant surgery for the turbinate ridge in clinical practice. The existing dental implants are difficult to adapt to the complex physiological and anatomical structure of the turbinate ridge area, especially the deep part of the nasal cavity where the turbinate ridge area is located. The length of the existing implants cannot reach this position (reference Figure 2 , Figure 3 ), and even if an extended implant structure is set, the extended implant is likely to exert excessive pressure on the surrounding soft tissue and bone tissue during implantation, resulting in tissue damage or implant failure. In addition, since the implantable volume of the turbinate ridge is small, the existing implants cannot use this physiological and anatomical property for implant positioning and installation. Based on the above problems, a new dental implant system dedicated to the turbinate ridge area is needed to meet the clinical needs of oral implants. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a dental implant with a reasonable and simple structure suitable for the nasal ridge area, which can reduce the damage to soft and hard tissues during implantation, improve the initial and long-term stability of the dental implant, and enhance the bonding effect between the dental implant and bone tissue.

[0007] To achieve the above object, the present invention provides the following technical solutions: A dental implant for turbinate ridge implantation, one end of the dental implant is provided with a work hole for abutment installation, and the dental implant is suitable for implantation in the turbinate ridge region of the maxillary bone.

[0008] The present invention is further configured as follows: the dental implant extends along a longitudinal axis, a root end and a crown end are respectively provided at both ends of the dental implant, and the workstation hole is opened from the crown end along the longitudinal axis. An external thread is arranged on the outer surface of the dental implant to fix the dental implant at a predetermined position.

[0009] The present invention is further configured as follows: the external thread has a plurality of thread areas distributed on the outer surface of the dental implant, and the thread areas include thread area one, thread area two, thread area three and thread area four.

[0010] The threads on thread zone one extend to the root end, and the threads on thread zone four extend to the coronal end.

[0011] The present invention is further configured as follows: the diameter of the dental implant gradually decreases from the crown end to the root end, and the threaded zone three includes two threaded structures with different tapers.

[0012] The present invention is further configured as follows: a non-threaded area is provided on the outer peripheral surface of the second threaded area.

[0013] The present invention is further configured such that: a notch which reduces the diameter of the groove-free area is provided on the groove-free area.

[0014] The present invention is further configured as follows: the pitches of the thread zone one, thread zone two, thread zone three and thread zone four are different, among which the pitch of thread zone one is the largest, and as the thread extends from thread zone one to thread zone four, the pitch gradually decreases.

[0015] The present invention is further configured as follows: a threaded groove is provided on the outer peripheral wall of the threaded area, and a port of the threaded groove is disposed on the root end.

[0016] The present invention is further configured as follows: the height of the threaded zone one is L1, which is 5-7mm, the height of the threaded zone two is L2, which is 5-9mm, the height of the threaded zone three is L3, which is 8-12mm, and the height of the threaded zone four is L4, which is 2-3mm.

[0017] The present invention is further configured such that: the height of the dental implant is 20-28 mm.

[0018] Compared with the shortcomings of the prior art, the beneficial effects of the present invention are: By rationally designing a smooth transition zone and a recess between the threaded area and the non-threaded area of ​​the dental implant, the compression and damage to the soft tissue and bone tissue during the implantation process are reduced, which helps to facilitate faster recovery after surgery.

[0019] Thread zone one and thread zone two provide better mechanical support for the initial stability of the dental implant, while thread zone three and thread zone four ensure the stability and stress resistance of the dental implant in long-term use, reducing the risk of loosening or failure of the dental implant. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a model diagram of the turbinate ridge area; Figure 2 This is the CT measurement of the nasal turbinate ridge area of ​​the first patient; Figure 3 This is the CT measurement of the nasal turbinate ridge area of ​​the second patient; Figure 4 is a schematic structural diagram of a dental implant of the present invention; Figure 5 is a schematic diagram of a dental implant according to the present invention after implantation; Figure 6 FIG. 1 is a schematic diagram of a second embodiment of the dental implant of the present invention.

[0021] Root end 11, crown end 12, crown 2, thread zone one 1, thread zone two 2, thread zone three 3, thread zone three 4, notch 20. DETAILED DESCRIPTION

[0022] This embodiment 1 provides a dental implant suitable for implantation in the maxillary turbinate ridge region. Figures 1 to 5 The first embodiment of the present invention is further described.

[0023] The dental implant is designed to meet the physiological and anatomical requirements of the maxillary turbinate ridge area to ensure good stability and adaptability under the more complex dental implant surgery conditions in this area.

[0024] The length of dental implants ranges from 20mm to 28mm to adapt to the physiological and anatomical characteristics of the maxillary bones of different patients, especially for the surgical conditions of dental implants in the nasal ridge area. When the length is less than 20mm or greater than 28, it cannot meet the requirements of implantation. Figure 2-3 The image shows the location of the patient's turbinate ridge. The bone around the yellow circle is the turbinate ridge, and the measured dimensions are the width and thickness of the turbinate ridge.

[0025] The dental implant extends along the longitudinal axis and has an overall conical structure, which gradually narrows from the crown end 12 to the root end 11 to adapt to the special bone structure of the nasal ridge area, ensuring that the pressure on the surrounding bone tissue is reduced during implantation and obtaining good initial stability.

[0026] One end of the dental implant is provided with a crown end 12 for mounting the abutment, and a work position hole is opened on the crown end 12 along the longitudinal axis, and the other end is a root end 11. A stable mechanical connection is achieved by combining with the abutment. The abutment is used to mount a denture. The outer surface of the dental implant is provided with an external thread structure, which is used to firmly fix the dental implant in a predetermined position.

[0027] The root end 11 is the portion of the dental implant that directly contacts and embeds into the bone tissue. Since the overall structure of the dental implant is designed as a conical structure, it can provide a gradually increasing anchoring force when the dental implant is inserted into the bone tissue, thereby ensuring the initial stability of the dental implant in the bone tissue.

[0028] The diameter of the root end 11 is 1.4-2.5 mm, and the diameter of the crown 2 is 3-4.5 mm. The diameter of the root end 11 is to conform to and adapt to the size of the nasal ridge.

[0029] The external threads are distributed on the outer surface of the dental implant, and are specifically divided into thread zone 1, thread zone 2, thread zone 3, and thread zone 4. The threads of thread zone 1 extend to the root end 11 of the dental implant, the threads of thread zone 4 extend to the crown end 12, and thread zone 2 is located between thread zone 1 and thread zone 3.

[0030] The pitch and thread shape of each thread zone are optimized according to specific clinical needs to adapt to different bone conditions.

[0031] The threaded area 1, the threaded area 2 and the threaded area 3 are surface treated; the threaded area 4 is not surface treated, such as large-particle sandblasting and thermal acid etching, in order to allow the dental implant to better achieve a semi-bridge connection with the soft tissue after implantation.

[0032] The thread of thread zone 1 is V-shaped, that is, the thread of thread zone 1 is deeper, and thread zone 1 is a narrow and thin thread, which can invade the nasal ridge well, and the pitch of thread zone 1 is set larger, which can increase the implantation speed.

[0033] The threads of the thread zone 2 are thin and square, and the threads of the thread zone 3 are thick and square, that is, the depth of the threads from the thread zone 2 to the thread zone 3 is from deep to shallow, and the use of a thin front section and a wide rear end thread structure can increase the bone bonding area. In addition, the gradually widened threads can retain more cortical bone during vertical and horizontal bone compression, minimizing marginal bone absorption.

[0034] The diameter of the dental implant gradually decreases from the crown end 12 to the root end 11 to match the bone density and load-bearing requirements of different regions. Specifically, the external thread area of ​​the dental implant includes four main areas: thread area 1, thread area 2, thread area 3, and thread area 4. The four thread areas include structures with different taper changes according to the anatomical characteristics of the area, so as to provide wedge forces of different depths during the implantation process.

[0035] Through the distribution of different thread areas and their corresponding taper design, dental implants can quickly gain initial stability during the implantation process and gradually adapt to changes in bone tissue after surgery, thereby achieving long-term bone integration.

[0036] The taper and thread depth of the threaded area 1 are relatively large, which can provide a larger contact area and wedge force, effectively embed into the bone cortex, and form a strong mechanical lock. This design can resist the large torque that the initial dental implant is subjected to, and through the taper design, reduce the stress concentration of the bone, and ensure the early stability of the implant. A threaded groove is opened on the threaded area 1 around its outer peripheral wall, and one end of the threaded groove is placed on the root end 11.

[0037] The medium taper of the thread zone 2 can effectively balance the fixation force and stress distribution, avoiding damage to the bone due to excessive force. The medium taper allows the dental implant to gradually expand into the bone, resulting in a more uniform stress distribution; The smaller taper design of the thread zone 3 can provide a gentle expansion force, and the thread can smoothly contact the bone instead of forcibly squeezing the bone tissue. The further reduced pitch ensures a higher contact density, thereby effectively dispersing stress and avoiding bone absorption or bone degeneration in the bone area.

[0038] The threaded area four 4 is near the soft tissue. When implanted, a part of this area is connected to the bone area through its external thread, and the other part is combined with the soft tissue. In order to adapt to these two physiological and anatomical characteristics, the threaded area four 4 is reserved for surface treatment during machining, so that after implantation, the soft tissue can be better semi-bridged and combined to avoid irritation or damage to the soft tissue and bone surface.

[0039] Moreover, the non-tapering and small pitch of the thread zone 4 ensure a smooth transition of the dental implant between the bone surface and the soft tissue, which means that no excessive pressure is exerted on the bone surface or soft tissue during implantation, thereby reducing the risk of inflammation or infection.

[0040] From the perspective of physiological anatomy, the taper change from thread zone 1 to thread zone 4 is to adapt to bone structures of different densities. Thread zone 1 provides strong retention in dense bone through the largest taper design, the gradually decreasing taper of thread zone 2 and thread zone 3 optimizes stress distribution, and thread zone 4 protects soft tissue from excessive stimulation. This combination of taper change and gradually decreasing pitch not only meets the mechanical requirements of dental implants in different physiological and anatomical areas, but also ensures its physiological adaptability and long-term stability in each area.

[0041] During the implantation process of the dental implant, firstly, mark the point, then use the drill to break through the nose floor until the tip of the drill is visible at the nose floor, then use the large diameter drill to expand and adjust the hole prepared in the bone, then use the tip of the positioning drill to find and anchor the nasal ridge, then slightly fix the positioning drill against the nasal side wall, and pull the positioning drill up and down along the nasal side wall to establish a concave groove on the nasal side wall. Then use the top tip of the positioning drill to support the nasal ridge, press the drill to invade the nasal ridge, and complete the preparation of the hole for transnasal implantation. Finally, the dental implant is inserted through the hole to the nasal ridge, and the dental implant is rotated by torque to lock and fix it with the nasal ridge, so two symmetrical thread grooves are opened on the outer peripheral surface of the threaded area 1, and the thread grooves extend to the root end 11, so that a blade is formed on the root end 11, and the shape of the blade is boomerang-shaped, and the nasal ridge can be easily invaded through the blade.

[0042] Moreover, during the dental implantation process, the thread groove can increase its own torque. When the dental implant is normally implanted, the thread groove compresses the bone in accordance with the thread. When the implantation torque is too large, the dental implant needs to be reversed. The cutting edge of the thread groove directly embeds into and cuts the bone, thereby relaxing the pressure of the implant on the bone. Moreover, when the dental implant is reversed, the cutting edge of the thread groove cuts the bone during its withdrawal process, thereby expanding the cavity and allowing the dental implant to re-anchor its position.

[0043] On the outer peripheral surface of the threaded area 2, there is a section of unthreaded area. The unthreaded area is smooth and has no threads. Since this area will be exposed under the nasal mucosa, it is designed to eliminate the stimulation of the threaded structure to the nasal mucosa. In addition, a notch 20 is dug in the unthreaded area to further reduce the radial pressure in this area, forming a guide structure for reducing tissue extrusion during implantation. In addition, the inner surface of the notch 20 is in an arc shape, which can smoothly transition and make the bone tissue better adapt to the shape of the inner surface of the unthreaded area during the implantation of the dental implant. After the dental implant is implanted, the unthreaded area faces the nasal mucosa, which can prevent soft tissue damage.

[0044] The threaded ends of the threaded area 1 and the threaded area 3 are connected to the upper and lower ends of the recess 20, and a part of the threaded ends are fused with the inner surface of the recess 20. In order to avoid the formation of cutting edges, the two groove edges of the recess 20 are chamfered with raised arc end surfaces, so that the recess 20 forms a continuous and safe transition area, avoiding contact between the soft tissue of the posterior nose after implantation and the implant, and ensuring the stability of the implant.

[0045] In terms of height distribution, the height L1 of the threaded area 1 is 5-7 mm, and the threaded area 1 is completely implanted in the turbinate ridge, that is, fixedly connected to the turbinate ridge.

[0046] The height L2 of the threaded area 2 is 5-10 mm, and the height of the threaded area 2 makes the length of the recess 20 also the same. After the dental implant is fully implanted, the recess 20 is designed so that it does not touch the inner wall of the nasal cavity. This height distribution can evenly distribute stress at different positions of the dental implant, thereby reducing local stress concentration.

[0047] The height L3 of thread zone 3 is 8-12mm. Thread zone 3 is responsible for bearing the occlusal force and other mechanical loads after the dental implant is implanted for a long time. Thread zone 3 can expand the contact area between the dental implant and the bone tissue, thereby dispersing the occlusal force more evenly and reducing the stress concentration in the local area of ​​the dental implant, thereby reducing the risk of loosening or failure of the dental implant.

[0048] The thread zone 3 can better share the long-term load and ensure that the dental implant obtains sufficient retention force during initial implantation. This height ratio design can achieve a good balance between initial implant stability and long-term bone integration, especially in areas with more complex anatomy such as the nasal ridge.

[0049] The height L4 of the threaded area 24 4 is 2-3 mm, which ensures a smooth transition of the dental implant between the bone surface and the soft tissue.

[0050] Embodiment 2, as Figure 6 The threaded area 2 of the implant is a smooth end surface without a threaded area, which is called a functional area. A notch is provided on the peripheral wall of the functional area. The function of this implementation can also achieve the physical requirements of the first embodiment.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A dental implant for implantation in the nasal ridge, wherein one end of the dental implant is provided with a workstation hole for abutment installation, characterized in that: The dental implant is suitable for being implanted in the turbinate ridge region of the maxillary bone.

2. The dental implant for turbinate ridge implantation according to claim 1, characterized in that: The dental implant extends along a longitudinal axis, and a root end and a crown end are respectively provided at both ends of the dental implant, and a workstation hole is opened from the crown end along the longitudinal axis. An external thread is arranged on the outer surface of the dental implant to fix the dental implant at a predetermined position.

3. The dental implant for turbinate ridge implantation according to claim 2, characterized in that: The external thread has a plurality of thread areas distributed on the outer surface of the dental implant, wherein the thread areas include thread area 1, thread area 2, thread area 3 and thread area 4. The threads on thread zone one extend to the root end, and the threads on thread zone four extend to the coronal end.

4. The dental implant for turbinate ridge implantation according to claim 3, characterized in that: The diameter of the dental implant gradually decreases from the crown end to the root end so as to be formed into a cone shape.

5. The dental implant for turbinate ridge implantation according to claim 4, characterized in that: A non-threaded area is provided on the outer peripheral surface of the second threaded area.

6. The dental implant for turbinate ridge implantation according to claim 5, characterized in that: The non-patterned area is provided with a notch which reduces the diameter of the non-patterned area.

7. The dental implant for turbinate ridge implantation according to claim 3, characterized in that: The pitches of the thread zone one, thread zone two, thread zone three and thread zone four are different, among which the pitch of thread zone one is the largest. As the thread extends from thread zone one to thread zone four, the pitch gradually decreases. Thread zone one, thread zone two, thread zone three and thread zone four are set with different tapers according to physiological and anatomical conditions and usage methods, and the taper extends from the root end to the crown end.

8. The dental implant for turbinate ridge implantation according to claim 7, characterized in that: A thread groove is provided on the outer peripheral wall of the threaded area, and one end of the thread groove is arranged on the root end.

9. The dental implant for turbinate ridge implantation according to claim 8, characterized in that: The height of the threaded zone one is L1, which is 5-7 mm, the height of the threaded zone two is L2, which is 5-10 mm, the height of the threaded zone three is L3, which is 8-12 mm, and the height of the threaded zone four is L4, which is 2-3 mm.

10. The dental implant for turbinate ridge implantation according to any one of claims 1 to 9, characterized in that: The height of the dental implant is 20-28 mm.

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