阅读说明：本技术 一次植入型复合牙科种植体 (Disposable implanted composite dental implant ) 是由 苏莹 李亚明 王朋 王祎 于 2020-06-20 设计创作，主要内容包括：本发明涉及牙科种植体技术领域,特别是涉及一次植入型复合牙科种植体,现在牙科修复整个流程需要将价格昂贵的多部件结构组合在一起,操作复杂且效果不佳,一次植入型复合牙科种植体,复合牙科种植体自上而下依次包括一体的固位结构、穿龈段和螺旋固位体,固位结构包括中央螺栓通道、固位平面和固位外壁,固位外壁包括上固位外壁和下固位外壁,上固位外壁和下固位外壁为同一锥度下的不连续斜面,穿龈段包括穿龈台和平台转移段,中央螺栓通道位于固位结构和穿龈台中央,平台转移段和螺旋固位体为实心结构,整体一次手术植入完成且固位性能优良,不易引起牙科疾病,不影响人体健康,在牙科种植体技术领域具有良好的发展前景。(The invention relates to the technical field of dental implants, in particular to an one-time implanted composite dental implant, which is characterized in that the whole process of dental restoration needs to combine a plurality of component structures with high price, the operation is complex and the effect is poor, the one-time implanted composite dental implant sequentially comprises an integrated retention structure, a gum penetrating section and a spiral retainer from top to bottom, the retention structure comprises a central bolt channel, a retention plane and a retention outer wall, the retention outer wall comprises an upper retention outer wall and a lower retention outer wall, the upper retention outer wall and the lower retention outer wall are discontinuous inclined planes with the same taper, the gum penetrating section comprises a gum penetrating platform and a platform transferring section, the central bolt channel is positioned in the centers of the retention structure and the gum penetrating platform, the platform transferring section and the spiral retainer are of solid structures, the one-time operation implantation is completed, the retention performance is excellent, and dental diseases are not easy to cause, does not affect the health of human body and has good development prospect in the technical field of dental implants.)

1. The once-implanted composite dental implant is characterized by comprising an integrated retention structure (11), a gum penetrating section (21) and a spiral retainer (31) from top to bottom in sequence, wherein the retention structure (11) comprises a central bolt channel (111), a retention plane (113) and a retention outer wall (112), the retention outer wall (112) comprises an upper retention outer wall (1121) and a lower retention outer wall (1122), the upper retention outer wall (1121) and the lower retention outer wall (1122) are discontinuous inclined planes with the same taper, the gum penetrating section (21) comprises a gum penetrating platform (211) and a platform transferring section (212), the central bolt channel (111) is located in the center of the retention structure (11) and the gum penetrating platform (211), and the platform transferring section (212) and the spiral retainer (31) are of solid structures.

2. The single-use composite dental implant according to claim 1, wherein the outer retention wall (112) forms an inclination angle of 15 ° to 45 ° with the plane of the transgingival section (21), and the outer lower retention wall (1122) has a height of between 0.3 mm and 0.5 mm.

3. The single-implantation composite dental implant according to claim 1, wherein said retention plane (113) is a regular polygon with a number of sides comprised between 3 and 8.

4. The single-implantation composite dental implant according to claim 1, wherein said platform transfer section (212) is a concave arc surface having a radius of arc of between 0.6 mm and 1.2 mm.

5. The composite dental implant of claim 1, wherein the helical retainer (31) comprises a cylindrical section (312), a tapered section (313) and a tail cone section (314) from top to bottom in sequence, the cylindrical section (312) is a cylinder with equal diameters from top to bottom, the tapered section (313) is tapered from one end close to the cylindrical section (312) to one end close to the tail cone section (314) to form an inverted cone, the tail cone section (314) is an arc-shaped cone with a side surface protruding outwards, and the outer surfaces of the cylindrical section (312) and the tapered section (313) are provided with continuous helical threads (315).

6. The single-pass composite dental implant according to claim 5, wherein said helical thread (315) is provided with helical cutting edges (311), said helical cutting edges (311) being equally provided with 3 per turn of the helical thread and being integrally arranged in an array, each of said helical cutting edges (311) being rotated by an angle of 10 ° to 30 ° with respect to the central axis of the implant.

7. The primary implantable composite dental implant according to any of claims 1 to 6, wherein the surface of the helical retainer (31) is provided with a nano hydroxyapatite coating.

Technical Field

The invention relates to the technical field of dental implants, in particular to a one-time implanted composite dental implant.

Background

Since the professor Branemark in 1965 led to the first application of cylindrical threaded dental implants made of pure titanium to clinic, the development of modern dental implants was pioneered, and through the development of more than 40 years, the modern dental implant technology has become mature and widely applied in clinic, and becomes one of important methods for repairing defects and deletions of dentition. To date, more than one tooth implantation system is used clinically in the world, and through clinical verification and with the deepening of clinical application and research, people find that the tooth implantation system has the following defects: 1. the two-section type implant is a type of implant with two sections instead of a whole body. During operation, the fixture combined with bone tissue and the abutment combined with gum tissue are implanted twice before and after the operation, and the fixture and the abutment are connected via the central screw of the implant to form one integral. The first operation is to implant the retainers into the bone tissue, suture the wound, after 4-6 months, after the implant retainers are combined with the bone tissue under the completely unloaded rest state, the second operation is performed, namely, the gingival tissue is cut, the abutment is connected through the central screw of the implant, the model is taken after the stitches are removed, the final restoration is completed, and the patient also needs to wait for a long time and undergoes two operations; 2. the one-section type implant is a type of implant in which an implant abutment (a part combined with a gum) and a retainer (a part combined with bone tissues, namely an artificial tooth root) are connected into a whole at one section. In operation, the retainer joined to the bone tissue and the abutment joined to the gum tissue are implanted as a whole in one operation. When the implant retainer is implanted into the bone tissue, the abutment directly passes through the gum and is exposed in the oral cavity. The temporary denture can be worn after the stitches are removed, and after the implant is stable for 4-6 weeks, the model is taken and the final prosthesis is completed. However, since the abutment is directly exposed in the oral cavity, the abutment is susceptible to external force to generate mobility, it is difficult to ensure that the implant retainer is combined with the bone tissue in a completely unloaded rest state within a certain time, and once infection occurs, the implant retainer is easy to directly affect the bone tissue through periodontal descent, which is not favorable for healing of the implant with the bone tissue interface and the gingival tissue interface, and is easy to cause tissue lesion around the implant to cause implant failure.

The dental cement is an essential medium for the bonding and fixing of the implant, and because the dental cement is originally manufactured on natural teeth, the cement has the characteristic of interacting with the natural teeth. For example, some flutemazenes can release fluoride ions to prevent dental caries; some flutemastin may acid the dentin; some of the flutemastin may form chelates with Ca2+ ions in dental tissues, etc., but none of these properties are required for implant repair; furthermore, some of the actions are harmful to the implantation repair, such as the selection of different types of cement, the selection of an implantation system, the improvement of an abutment, the treatment of an inner crown bonding surface and the like, all of which affect the bonding and the retention, and the poor retention can cause the implant crown to fall off.

Poor closure between the post-implant prosthesis and the abutment, and the microorganisms are easily gathered at the position, so peri-implantitis is formed, the occurrence of the peri-implantitis is an important problem which needs to be solved urgently by doctors, bone absorption is caused seriously, and finally the implant is loosened and falls off, and the implantation fails.

The screw retention implant repair mode at the present stage can achieve tooth extraction, implant and screw retention of the transitional false tooth in one day, a patient does not have a tooth-free transitional period and cannot influence food intake and social care, and meanwhile, because the transitional false tooth covers the cut and sutured wound, compared with the conventional postoperative wound, the patient is more comfortable, and the bleeding and swelling possibility is lower; but the defect is that the multi-component structure is complex and expensive, the key point of using the repairing method is to select the screw retention abutment (the abutment belongs to the male component, the matched upper structure is the female component false tooth structure, the two parts are connected together by the secondary screw), the abutment is screwed into the implant by using a special abutment wrench, and then the male component abutment and the female component false tooth structure are connected together by using the secondary screw, which is the whole repairing process; in the operation process, 3 to 4 different types of wrenches are needed to realize the fastening effect of different parts according to different torques, and a clinician needs to have enough knowledge and experience to realize the whole repair process.

In the current stage of screw-retained implant repair, the implant needs to be implanted into the optimal position so that the common screw-retained abutment on the market can be used to play a good role and function; the repair method is only suitable for repairing a plurality of implanted implant screw retaining implant bridges; in addition, since the screw-retained stent is manufactured by casting, the process itself has dimensional differences, and it is difficult to obtain accurate and precise stent results.

In addition, the environment in the oral cavity is very complex, and if a gap exists between the plane of the gum-penetrating platform of the male part and the bottom surface of the female part, microorganisms can be easily gathered at the position, so that peri-implantitis is formed, the peri-implantitis is an important problem to be solved by a doctor, and in severe cases, bone absorption can be caused, finally, the implant is loosened and falls off, and the implantation fails.

There is a theory in present dentistry implantations, if open the corresponding cavity structure that has bolt hole and maintenance plane in the implant intermediate position, after implanting the jaw, receive the influence of interlock stress, stress can be through the conduction of dental crown, the bottom of central bolt is finally used to, can arouse long-term in the past around the implant bone tissue to absorb, more can cause the implant to implant the failure when serious, conventional way is to deepen the implant depth of implantation, and grind the bone tissue around the implant shoulder, the operation process is loaded down with trivial details, the patient need bear the misery of grinding the bone, and the bolt hole that implant central authorities have can destroy the structural strength of whole implant.

Disclosure of Invention

Aiming at the situation, the invention provides a one-time implantation type composite dental implant to overcome the defects of the prior art, and solves the problems that the operation is complicated, the male part and the female part are manufactured by the prior equipment, the tight fit cannot be caused due to the processing technology and the accuracy which are not achieved, the central bolt channel of the implant destroys the integral strength of the implant and the bone tissue absorption is caused due to the fact that the expensive multi-part structure needs to be combined together in the whole process of the existing dental restoration.

The technical scheme is that the once-implanted composite dental implant sequentially comprises an integrated retention structure, a gum penetrating section and a spiral retention body from top to bottom, the retention structure comprises a central bolt channel, a retention plane and a retention outer wall, the retention outer wall comprises an upper retention outer wall and a lower retention outer wall, the upper retention outer wall and the lower retention outer wall are discontinuous inclined planes with the same taper and can be seamlessly attached to a denture structure connected with the upper retention outer wall, the gum penetrating section comprises a gum penetrating platform and a platform transfer section, an intraoral connective tissue is attached to the platform transfer section to limit the movement of a soft tissue to the root, the central bolt channel is positioned in the centers of the retention structure and the gum penetrating platform, the platform transfer section and the spiral retention body are of solid structures, the bottom of a bolt channel in the retention structure is set to be far away from a bone tissue, and the distance between the platform transfer section and the spiral retention structure is kept to be not less than, can reduce the bone absorption around the implant, improve the success rate of the implant operation, reduce the operation time and relieve the operation pain of the patient.

Furthermore, the diameter of the retention structure is recorded as d1, the corresponding diameter of the upper end face of the spiral retainer is recorded as d2, d1 is not more than d2, and the difference between d2 and d1 is 0-0.5 mm.

Furthermore, the retention outer wall and the plane of the gum penetrating section form an inclined angle of 45-65 degrees, namely the vertex angle of a cone formed after the inclined plane of the retention outer wall extends upwards is 50-90 degrees, and the height of the lower retention outer wall is 0.3-0.5 mm.

Furthermore, the height of the gum penetrating section determines the height of the spiral retainer platform implanted into the jaw bone and the gum in the oral cavity of the patient, and the height of the gum penetrating section is between 1.5mm and 6.5 mm.

Furthermore, the platform transfer section is an inwards concave arc-shaped surface, and the radius of the arc is 0.6-1.2 mm; the concave arc-shaped surface accommodates the intraoral connective tissue attached to the concave arc-shaped surface, the soft tissue is limited to move towards the root direction, the biological width reconstruction is partially changed from the vertical direction to the horizontal direction, and therefore the marginal bone absorption caused by obtaining the vertical biological width is reduced; the distance between the micro-gap and the bone tissue becomes far, thereby reducing the influence of bacteria gathered at the micro-gap on the marginal bone; the arc surface which is inwards concave reduces the contact area with bone tissues, and reduces the influence of micromotion at the micro-gap on the edge bone; soft tissue sealing is enhanced: the formation of cuff between implant gum penetrating part and gum soft tissue, because the neck narrows, so the soft tissue can form a wider and more resistant cuff at the neck, making the external microorganism not easy break through this cuff.

Furthermore, the spiral retainer implanted into the human tissue sequentially comprises a cylindrical section, a conical section and a tail conical section from top to bottom, wherein the cylindrical section is in a cylindrical shape with the same diameter from top to bottom, the contact area between the implant and a jaw bone can be increased, the stability of the implant is improved, the conical section is in a shape of an inverted cone truncated cone in a manner that the diameter of one end close to the cylindrical section is reduced to that of one end close to the tail conical section, the taper of the conical section is recorded as beta, the size of the beta is 1.5-4 degrees, the conical section can realize excellent initial stability when the bone is poor, the tail conical section is an arc-shaped cone with the side surface protruding outwards, and continuous spiral threads are arranged on the outer surfaces of the cylindrical section and the conical section.

Furthermore, the height of the cylindrical section is between 0.15mm and 0.5mm, and the diameter d2 of the end face circle of the cylindrical section is between 2.8mm and 5 mm.

Furthermore, the spiral threads are provided with cutting edges, the spiral cutting edges are formed by triangular notches arranged on the spiral threads, the spiral cutting edges are arranged on each circle of spiral threads at equal intervals in a mode of surrounding a central shaft, the rotating angle of each spiral cutting edge is 10-30 degrees relative to the central shaft of the implant, the implantation direction can be adjusted, and the self-tapping property is good.

The spiral thread is a thread with an isosceles trapezoid-shaped cross section, the distance between two adjacent spiral threads is a thread pitch and is marked as P, the numerical value of P is 0.35-1.50 mm, the trapezoid of the cross section of the spiral thread corresponds to a taper and is marked as alpha, the range of the alpha value is 35-55 degrees, the thickness of the spiral thread is marked as h, the range of h is 0.25-0.58 mm, the spiral thread is designed into a double-thread mode and can shorten the implant implantation time and bring mild implantation feeling, the starting section of the spiral thread is the beginning of the thread, the beginning of the thread is the opening design with the tip as the starting point and the width gradually increased until the isosceles trapezoid-shaped cross section is formed, and the design effectively prevents osteonecrosis.

Further, the height of the spiral retainer is between 7mm and 16 mm.

Furthermore, the retention plane is a regular polygon with 3-8 side faces, and multi-angle installation of the female part is met.

Furthermore, the retention plane is of a regular hexagon structure, the regular hexagon structure can be relatively suitable for most patients, and the requirement on the processing precision of parts is not high.

Furthermore, the surface of the spiral retainer is provided with the nano hydroxyapatite coating for simulating the surface of the bone tissue, so that the surface modification can be carried out on the implant, the implant has a high-efficiency biological function and can be combined with the bone with good bone formation, the bone combination rate of the implant is greatly enhanced, the failure rate of the implant is reduced, and the problem of the bone combination of the implant under special conditions such as osteoporosis is solved to a certain extent.

Furthermore, the hydroxyapatite coating can be prepared by a hydrothermal method, a precipitation method, an ultrasonic synthesis method, a sol-gel method, a micro-emulsion method, a liquid-solid synthesis method and other chemical synthesis methods or a hydroxyapatite coating prepared by a plasma spraying technology.

Further, the central bolt passage is a metric coarse thread with thread specifications of M1.4, M1.6 and M1.8.

The invention has the technical effects that 1, the single crown can be repaired by the fixing structure for fixing the artificial denture; 2. the upper fixing plane realizes the axial screwing of the jaw through a spanner matched with the upper fixing plane, so that the clinical operation is simplified and the implantation efficiency is improved; 3. the retention outer wall in the upper structure is in seamless fit with the connected denture structure, so that no space exists for microorganisms and bacteria, and the peri-implantitis is avoided; 4. the implant platform transfer position can effectively obtain biological width, reduce butterfly bone absorption and strengthen soft tissue sealing; the cylindrical section of the implant increases the contact area between the implant and the jaw bone and improves the stability of the implant; in addition, the composite dental implant can be integrally implanted in one operation and has excellent retention performance; after the implant platform is additionally displaced, the healing of the implant and the bone tissue interface and the gum tissue interface is facilitated; the upper screw retaining structure can avoid various damages and influences of the bonding and retaining of the dental cement; the whole implant is of a one-stage structure, the whole structure is simple, the operation time of a clinician is reduced, and the implantation efficiency is improved; by using the relevant data of the upper structure of the composite dental implant, the accuracy of false tooth repair can be improved, the repair of a single crown can be realized, and the repaired structure can be formed by 3D printing or a five-axis machining center with higher accuracy.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic front view of the present invention.

Fig. 3 is a schematic cross-sectional structure of the present invention.

11-retention feature, 111-central bolt channel, 112-retention outer wall, 1121-upper retention outer wall, 1122-lower retention outer wall, 113-retention plane, 21-transgingival section, 211-transgingival platform, 212-platform transfer section, 31-helical retainer, 311-cutting edge, 312-cylindrical section, 313-conical section, 314-caudal conical section, 315-helical thread, 316-thread start.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.