47 results about "Alveolar cavity" patented technology

The invention relates to a medical dental implant with the surface biomimetic function and a manufacturing method thereof. The medical dental implant is characterized in that the medical dental implant comprises an implant body and further comprises an outer layer of a bionic artificial bone structure, the outer layer is integrally combined with the outer surface of the implant body and capable of simulating the alveolar cavity bone tissue structure around the tooth root portion of a missing tooth of a patient. According to the medical dental implant and the manufacturing method thereof, the outer layer of the bionic bone structure, which is formed in a 3D printing mode and of a massive structure, serves as the outer layer of the tooth implant body, and therefore an ideal embodiment used for simulating the artificial bone surface structure is provided. More importantly, a good activity surface layer structure foundation beneficial to bone marrow stem cell and bone-formation related cell adhesion, proliferation and growth and capable of playing the final bone-formation function is provided, the surface of the foundation is loaded with chemical components such as calcium and phosphate and bioactive molecules such as collagens, hence, a bone-formation promotion microenvironment is created, bone cell generation is induced, and fast and firm bone combination can be achieved at the early stage.

The invention relates to a magnetic hydroxyapatite bioceramic and a preparation method thereof, belonging to the field of biomaterials. The magnetic hydroxyapatite bioceramic is prepared from the following components in parts by weight: 30-55 parts of hydroxyapatite, 6-10 parts of magnetic nano particles, 2-6 parts of magnesium oxide, 1-4 parts of nano titanium oxide, 1-3 parts of boron oxide and 6-20 parts of calcium oxide. The preparation method of the magnetic hydroxyapatite bioceramic comprises the following steps: (1) preparing the hydroxyapatite; (2) mixing the components: (3) cold-press molding powder; (4) calcining at a high temperature; and (5) cooling and taking out the finished product. The magnetic hydroxyapatite bioceramic provided by the invention has high mechanical strength, good toughness and good biocompatibility, is non-irritating, can not be absorbed, can be used for patching and filling alveolar cavities and defected bone, can be used in brain surgery and can be further used for preparing ossicular chain material and cosmetic plastic material.

The invention relates to the technical field of medical treatment, in particular to an intraoperative implant precision detection system and method for dental implant surgery. The system comprises an alveolar cavity, a probe, a connector, an implant, an oral cavity positioning clamp, an implant tooth navigation system, an infrared binocular camera and a mechanical arm. The three-dimensional position of the current implant is obtained in real time by using an interaction mode that a probe is in contact with the implant in an operation, so that the implant precision is calculated in real time in a dental implant operation process, and whether the implant is implanted to an ideal position or not is displayed and judged in real time through the dental implant navigation system; a doctor can adjust the implantation depth in time according to the real-time position of the implanted tooth, so that an operation can be completed more accurately and efficiently.

The invention belongs to the field of comprehensive treatment of dental departments and in particular discloses a digital 3D implanting guide plate manufacturing method and a system thereof. Aiming atthe problems that conventional operation is high in cost and operation can be implemented only after an implanting guide plate is positioned by using a plurality of positioning threads, the inventiondiscloses a scheme that the system comprises a data management center, wherein detection equipment, demonstration equipment, manufacturing equipment, operation equipment and a cloud server are respectively arranged at a connecting end of the data management center; a 3D printer is adopted to manufacture the implanting guide plate; and the implanting guide plate comprises a main body, a tooth implanting hole, a positioning hole, adhesion blocks and an occlusion block. As a plurality of convex points are arranged on the surface of the adhesion blocks at both ends of the implanting guide plate,the friction of the implanting guide plate and an alveolar cavity ridge mucosa in contact and adhesion can be increased, sliding of the main body of the guide plate can be reduced, and in addition, anextra positioning function can be achieved for the main body of the guide plate; and the positioning threads placed in the positioning hole can be reduced to one or two, so that the operation cost can be reduced, and the operation time can be shortened.

An endosseous implant for an implantation in a periodontal tissue made of a sintered ceramic material. The first surface of the implant is configured to be implanted in an alveolar bone tissue. The first surface texture has patterns of recessed alveolar cavities with a closed outline whose average width lies between 8 μm and 15 μm and a surface finish lying between 1 μm and 3 μm. The second surface of the implant is configured to be implanted in a cortical bone tissue. The second surface texture has a pattern of recessed alveolar cavities with a closed outline whose width lies between 1.5 μm and 5 μm and a surface finish lying between 0.1 μm and 0.5 μm. The first and second textures replicate surface texture of tissues similar to the implantation alveolar bone tissue and implantation cortical bone tissue, respectively.

The invention discloses a hydroxy apatite / zirconia composite bio-ceramic and a preparation method thereof, and relates to the field of biological materials. The hydroxy apatite powder is taken as the basic material, nano zirconia is taken as the cladding material, and the nano zirconia is coated on the surface of the hydroxy apatite surface; wherein the average particle size of the hydroxy apatite powder is 10 to 50 [mu]m, the thickness of the nano zirconia cladding layer is 100 to 300 nm; and the hydroxy apatite powder is prepared through a precipitation reaction method or a hydrothermal method. The preparation method comprises steps of preparing hydroxy apatite powder, carrying out chemical vapor deposition reactions, and performing high temperature solid state method. The provided hydroxy apatite / zirconia composite bio-ceramic has a high mechanical strength and good biocompatibility, can be used to repair or fill tooth or alveolar cavity and repair bone damage, and can also be used as artificial bone cores to treat bone tuberculosis.

The invention discloses a method for making a guide plate for complete denture implantation, which is characterized in that polycaprolactone material is injected through a molding die to form a general oral alveolar bone shape, and multiple holes are formed on the surface along the alveolar direction. positioning holes. Beneficial effects of the present invention: the guide plate for implantation of the present invention satisfies the requirement for the implant doctor to quickly and accurately complete the implant operation under the condition of ideal bone density of the patient’s full-mouth gums; using the complete denture implant guide plate, the implant surgery plan is accurate , fast and safe, and can shorten the patient's operation time and reduce the pain of the patient.

The invention belongs to the field of inorganic nonmetal materials, particularly belongs to a preparation method of an anti-bacterial tooth growing and repairing material, and relates to a growing and repairing anti-bacterial tooth material used in an alveolar cavity without a tooth or on the surface of an incomplete tooth. The anti-bacterial tooth growing and repairing material comprises the following main ingredients: apatite crystals containing silver, copper, calcium and phosphorus, titanium oxide and zinc oxide. Under the regulation and control effect of a binary polyelectrolyte compound consisting of water-soluble cationic polyelectrolyte and organic polyatomic acids, ingredients of the tooth growing and repairing material are synthesized with soluble calcium salt, soluble phosphate, copper sulfate and silver nitrate salt, a crystal natural growing method is used, and a dental matrix comprising the apatite crystals containing the silver, the copper, the calcium and the phosphorus, the titanium oxide and the zinc oxide are subjected to adsorption reaction fully. Crystalline grains of the anti-bacterial tooth growing and repairing material are in nanoscale, the copper and the silver can be fine and are uniformly distributed in the tooth growing and repairing material, diameters of metal particles are 30-80 nanometers, and the anti-bacterial tooth growing and repairing material can release anti-bacterial elements quickly and continuously.

The invention discloses a use method of a dental suppository channel type attachment. The use method comprises the following steps: determining position information of the suppository channel type attachment according to alveolar cavity information; acquiring shape information of a suppository channel, and performing conventional preparation on an abutment tooth in front of a tooth lacking gap; acquiring inclination information of an abutment tooth behind the tooth lacking gap, and performing conventional preparation on the abutment tooth behind the tooth lacking gap; preparing a tooth impression according to the alveolar cavity information, preparing a rear half part fixed false tooth according to the tooth impression, and placing a suppository body at a position close to the center of the alveolar cavity; manufacturing a front half part fixed false tooth according to the tooth impression; mounting the rear half part fixed false tooth in an alveolar cavity of a patient, and fixedly mounting the front half part fixed false tooth at one end, far away from the alveolar cavity, of the rear half part fixed false tooth by using an adhesive. The suppository body and abutment teeth on oneside are used for obtaining a common positioning channel, and teeth are ground as little as possible on the other side, so that the purpose of storing tooth tissue as possible is achieved.

The invention discloses an oral implant device. The oral implant device comprises an alveolar bone, wherein a screw-in body is fixedly installed in a bottom groove of an alveolar cavity of the alveolar bone, a base is arranged on the portion, located on the upper side of the screw-in body, in the alveolar cavity of the alveolar bone, a thread groove is formed in the end, away from the screw-in body, of the base, and a thread base is in threaded connection with an inner groove wall of the thread groove. According to the device, through a screw nail which goes deep into the alveolar bone, the bottom end of an implant is fixed to the screw-in body which is screwed in the alveolar bone, moreover, by filling a filling cavity, provided with the screw nail, of the base of the implant with hydroxyapatite and making a filler filling connector communicate with the filling cavity and the alveolar cavity of the alveolar bone, an implant tooth is stably installed in the alveolar cavity of the alveolar bone, and movement is avoided; and by flexibly clamping clamping boards, which are located on an installation base provided with the false tooth, between a lifting board and fixing blocks, the false tooth can be flexibly installed and replaced without moving a lower end portion of the false tooth of the implant, so that secondary damage to a patient is avoided, and the working efficiency of amedical worker is improved.

The invention discloses a novel application of naringin in preparation of a medicine for treating chronic obstructive pulmonary disease. In particular to application of naringin in preparation of drugs for treating chronic obstructive pulmonary diseases induced by diesel PM2.5 particles, including preparation of drugs for treating lung tissue elastic resistance reduction, lung tissue airway resistance increase or lung tracheal wall or alveolar cavity thickening induced by diesel PM2.5 particles. Tests prove that the naringin can be used as a medicinal active component and can be matched with a pharmaceutically acceptable carrier, so that a basis is provided for preventing and treating the chronic obstructive pulmonary disease, and the life quality of a patient is improved.

The invention discloses an oral health detector with an automatic fixing function. An extension cavity is formed in a detector body, an extension rotating shaft is rotatably connected to the left wallof the extension cavity, an extension cam is fixedly connected to the axis of the right end face of the extension rotating shaft, the extension cam is provided with an upper protruding end and a lower protruding end which are symmetrical about the axis, the upper and lower protruding ends of the extension cam are connected with extension connecting rods by hinges, and the upper and lower sides ofthe detector body are provided with two piezoelectric elements capable of sliding up and down. In a mode that the piezoelectric elements generate current and drive the detector to be started, a useroccludes the piezoelectric elements through the teeth and fixes the whole detector firstly, then a camera, a light-emitting bulb and a reflector are driven by magnetic force to illuminate and shoot the rear alveolar cavity in the oral cavity, and meanwhile, the detector can play images shot by the camera through a screen, so that the user can see the health degree of the oral cavity by himself / herself; and the detector is convenient to use.

The invention belongs to the technical field of biological medicine, and particularly relates to application of corynebacterium casei in preparation of medicine for preventing and treating lung injury. By constructing a radon inhalation-induced lung injury mouse model, after exposure at different radon levels, the weight of a mouse is reduced, the lung coefficient is increased, the tidal volume of the lung, the ventilation volume per minute and the maximum inspiration flow are reduced, the respiratory function is inhibited, the alveolar cavity of the mouse is abnormally expanded, the pulmonary septum is thickened and fractured, and more fibrin exudation is accompanied; the traditional Chinese medicine composition can be used for effectively inhibiting pulmonary fibrosis and lung injury due to obvious inflammatory infiltration beside bronchial tubes, extravasated blood in small blood vessels and lung tissue collagen deposition, and can be used for gavage of corynebacterium casei to effectively inhibit the above phenomena. Therefore, the corynebacterium casei can be used for preventing and treating lung injury, especially lung injury caused by radon exposure.

The invention belongs to the field of biological medicine, and particularly relates to an inhalable small molecule compound lung targeting delivery system and application thereof in radiation-induced lung injury protection. The invention develops a probiotic-drug symbiotic delivery system based on lactobacillus rhamnosus on the basis of finding that a small molecular compound with a molecular structure as shown in a formula (I) has excellent SOD and CAT enzyme activity and can prevent radiation-induced lung injury caused by radiotherapy for the first time. Wherein the small molecule compound is loaded on the surface of lactobacillus rhamnosus and is directly delivered to the alveolar cavity through aerosol inhalation, so that the targeting property and bioavailability of the small molecule compound at the RILI part can be enhanced. # imgabs0 # (I)

The invention relates to a buccal type stutter corrector. A buffer rod is arranged on the left side of a right alveolar cavity, a buffer rod is arranged on the right side of a left alveolar cavity, and the left alveolar cavity is connected with the right alveolar cavity through a supporting rod. The buccal type stutter corrector is made of transparent silica gel and is free of toxins and smells, the buccal type stutter corrector is embedded into teeth through the left alveolar cavity and the right alveolar cavity, the tongue is stimulated through the buffer rods on the alveolar cavities, pronunciation of a patient is corrected in a stimulated mode, the firmness on the teeth is improved through U-shaped blocks in the left alveolar cavity and the right alveolar cavity, the privacy of the patient is well protected, the nervousness degree of the patient is reduced to a certain degree, and the purpose of treating stutter is achieved.

The invention discloses a gastroscope device with an auxiliary nursing function, and relates to the technical field of medical instruments. The gastroscope device comprises a fixing mechanism and an alveolar cavity supporting component, wherein a hydraulic telescopic rod is fixedly connected with a first fixing arc plate; the first fixing arc plate is fixedly connected with a pressure sensor diaphragm; an upper arc-shaped alveolar cavity is fixedly connected with a lower arc-shaped alveolar cavity through connecting springs and an arc-shaped supporting plate; a liquid pumping cylinder communicates with a waste liquid collecting tank; the liquid pumping cylinder is in sliding connection with a piston push plate; the piston push plate is rotatably connected with a sealing round cover; and a reset spring is fixedly connected between the piston push plate and the sealing round cover. Saliva can be pumped out through the liquid pumping cylinder and the waste liquid collecting tank, the body and the head of a patient can be fixed through the fixing mechanism, the size of the alveolar cavity supporting component can be reduced, and the problems that a saliva suction component of an existing gastroscope device is unreasonable in a design structure, the size of an oral cavity supporting component can not be adjusted, and the body and the head of the patient are difficult in fixing are solved.

The invention belongs to the technical field of biological medicines, and discloses application of intervening BOK in preparation of a medicine for treating novel coronavirus pneumonia. In order to find a new immunotherapy scheme for comprehensive treatment of novel coronavirus pneumonia, the research on the lung tissue of novel coronavirus pneumonia patients finds that the expression quantity of BOK in the lung tissue cell of the novel coronavirus pneumonia patients is increased, BOK gene knockout can inhibit the apoptosis of human lung cells and vascular endothelial cells induced by a novel coronavirus membrane protein, and BOK knockdown by injecting lentivirus into the trachea of a mouse to express shRNA (short hairpin Ribonucleic Acid) aiming at BOK can inhibit the apoptosis of the lung tissue induced by the novel coronavirus membrane protein, which indicates that BOK is expected to be applied to the comprehensive treatment of the novel coronavirus pneumonia and is prepared into the form of a medicine for treating the novel coronavirus pneumonia, which can relieve lung injury and alveolar cavity fluid infiltration of the novel coronavirus pneumonia patients, and is suitable for protecting lung tissues and organs in the novel coronavirus pneumonia process.

The present invention belongs to the field of biomedicine technology, and in particular to the application of Corynebacterium casei in the preparation of medicines for preventing and treating lung injury. The present invention constructs a mouse model of lung injury caused by radon inhalation and finds that after exposure to different radon levels, the mice lose weight, increase the lung coefficient, reduce the lung tidal volume, minute ventilation and maximum inspiratory flow, and their respiratory function is inhibited. The alveolar cavity of the mice is abnormally expanded, the lung septum is thickened and fractured, accompanied by more fibrin exudation, obvious inflammatory infiltration appears near the bronchus, congestion occurs in small blood vessels, and collagen deposition in lung tissue can lead to the occurrence of pulmonary fibrosis, causing lung injury. Oral administration of Corynebacterium casei can effectively inhibit the above-mentioned phenomenon. Therefore, Corynebacterium casei can be used for the prevention and treatment of lung injury, especially lung injury caused by radon exposure.

An oral cavity imbedded breathing trachea capable of continuously adsorbing saliva is disclosed, a gum fixing block is arranged on a breathing trachea body, the gum fixing block is fixed on a gum through an upper tooth groove and a lower tooth groove, an extension body extending to the outside of the oral cavity is arranged on the outer side of the gum fixing block, and a saliva adsorption mechanism is arranged in the extension body. The saliva adsorption mechanism comprises an adsorption cavity and a downward extending area, the downward extending area is located in the inner side wall of the lower alveolar cavity, saliva holes facing the interior of the oral cavity are distributed in the surface of the downward extending area, and the adsorption cavity and the downward extending area are filled with water-absorbing cotton yarn. The core of the saliva adsorption mechanism is the adsorption cavity with the water-absorbing cotton yarn and the downward extending area, so that saliva endocrine in the oral cavity of a patient can be adsorbed by the water-absorbing cotton yarn through the saliva hole, and the saliva can be continuously adsorbed only by regularly taking out and replacing the water-absorbing cotton yarn in the saliva adsorption mechanism; saliva is prevented from being accumulated in the oral cavity of the patient and entering the airway to cause danger.

The invention discloses a 3D printed mandibular advancement snore-preventing device, and relates to the technical field of snore-preventing, the 3D printed mandibular advancement snore-preventing device comprises an upper alveolar cavity and a lower alveolar cavity, and the upper alveolar cavity and the lower alveolar cavity are formed through 3D printing; mounting blocks are uniformly arranged at the peripheries of the upper tooth socket and the lower tooth socket; supporting blocks are arranged on the rear sides of the two ends of the lower tooth socket, and the mounting blocks and the supporting blocks are formed through 3D printing; the snore of a user is detected through a noise sensor placed around the user, when the user snores, an electric telescopic rod is controlled to work through a controller and a signal transmitter, an output rod pushes a guide rod to move, then through a first pin shaft and a second pin shaft, an inferior alveolar cavity moves forwards, the lower jaw is pushed to move forwards, a breathing channel is expanded, and snoring is prevented; therefore, the snore-preventing device can be adjusted when a user sleeps and snores, and the problem that the user often difficultly enters the sleep state when carrying the adjusted snore-preventing device in the initial stage of use is solved.

The invention provides an alveolar bone contour prediction model generation method and device, and a prediction method and device. The alveolar bone contour prediction model generation method comprises the following steps: acquiring training sample data, wherein the training sample data comprises a feature image before correction, correction parameters and deformation quantities of upper and lower alveolar cavity contour lines after correction based on the correction parameters; taking correction parameters, a control point of an upper alveolar lingual side contour line before correction, a control point of an upper alveolar labial side contour line before correction, a control point of a lower alveolar lingual side contour line before correction, a control point of a lower alveolar labial side contour line before correction, a contour of upper incisors before correction and a contour of lower incisors before correction as input of an initial network model; performing supervised training by taking the corrected deformation quantity of the upper and lower alveolar contour lines as the output of the initial network model to obtain an alveolar bone contour prediction model. The alveolar bone after orthodontics can be scientifically and reasonably predicted through the obtained alveolar bone contour prediction model.

The utility model belongs to the field of medical instruments, and particularly relates to a buccal device suitable for nasopharyngeal carcinoma radiotherapy, which comprises a Y-shaped supporting rod, the Y-shaped supporting rod is of a hollow structure, the bottom of the Y-shaped supporting rod is in threaded connection with a balloon, a one-way valve is fixedly mounted in an inner cavity of the balloon, and the one-way valve is connected with the Y-shaped supporting rod. Two alveolar cavity bite pads are fixedly mounted on the inner side of the Y-shaped supporting rod; according to the tongue muscle training device, the Y-shaped supporting rod is matched with the tooth groove biting pad, the tongue muscle training device can be suitable for mouth shapes of different sizes, in the using process, the tooth groove biting pad is bitten by teeth and is not prone to sliding, the tongue of a patient can be efficiently positioned through matching of the shaking block and the tongue muscle training block, and tongue muscle training of the patient is facilitated; the problems that an existing oral device for radiotherapy is prone to sliding in the mouth of a patient, a tongue depressor wound with adhesive tape or a small medicine bottle needs to be stuffed into the mouth of the patient to achieve the effects of opening the mouth and fixing the tongue, the mode is not standard, and the effects of opening the mouth and fixing the tongue are not ideal are solved.

The invention relates to the technical field of dental implants and discloses a healing-promoting dental implant which comprises a device body, the device body comprises a soaking box and a dental implant, a sealing plate is mounted above the dental implant, a connecting hole is formed in the center of the surface of the sealing plate, a threaded body is mounted below a healing plate, and medicine outlet pipes are mounted on two sides of a medicine storage groove. And a tooth root pad is arranged below the medicine storage groove. According to the dental implant capable of promoting healing, the sealing plate and the healing plate can be tightly attached to an implant opening by utilizing the circular cone structure of the sealing plate, so that the sealing performance and the compatibility are improved, the strength of the dental implant is improved and the service time of the device is prolonged by utilizing SLA blasting sand, titanium, alloy and a composite material at the periphery of the threaded body, and liquid medicine penetrates through small holes to be in contact with tissue of a tooth part; the bottom end of the dental implant is in contact with the inner bottom end of an alveolar cavity by utilizing the position relation of the tooth root pad and the soft tissue structure of the dental implant, so that the buffering effect during occlusion is improved.

The invention discloses an alveolar bone defect repair bone nail, and the bone nail comprises a rod part; a thread is arranged on the outer wall of the rod part, the thread is provided with an alveolar cavity, the alveolar cavity comprises a bearing tooth side, a guide tooth side, a first arc surface and a second arc surface, and the bearing tooth side, the second arc surface, the first arc surface and the guide tooth side are sequentially arranged from front to back; the rear side of the first cambered surface and the leading flank are in smooth transition; the rear side of the second cambered surface and the front side of the first cambered surface are in smooth transition, the front side of the second cambered surface and the bearing tooth side are in smooth transition, and the arc radius of the second cambered surface is smaller than that of the first cambered surface. According to the alveolar bone defect repair bone nail, the alveolar bone is more attached to the first arc surface and the second arc surface, so that the stability of the bone nail is improved after the bone nail is screwed into the alveolar bone; and the alveolar cavity forms a barb structure, so that the alveolar cavity of the thread and the alveolar bone form an occlusion structure, and the stability of the bone nail screwed into the alveolar bone is improved. The invention can be applied to dental auxiliary appliances.

The invention discloses an oral implant device, comprising alveolar bone, a screw-in body is fixedly installed in the bottom groove of the alveolar bone cavity, and a base is arranged in the alveolar bone cavity on the upper side of the screw-in body, One end of the base away from the screw-in body is provided with a threaded groove, and the inner groove wall of the threaded groove is threadedly connected with a threaded seat. In the device, the bottom end of the implant is fixed on the screw-in body screwed into the alveolar bone through a screw that penetrates deep into the alveolar bone, and hydroxyapatite is filled in the filling cavity provided with the screw at the base of the implant. The connection port is connected with the filling cavity and the alveolar bone cavity, so as to ensure the stable installation of the implant in the alveolar cavity cavity and avoid loosening; the device flexibly clamps the clamping plate on the installation seat with the denture Between the lifting plate and the clamping plate, it can flexibly install and replace the denture without moving the lower part of the implant denture, avoid secondary injury to the patient, and improve the work efficiency of medical staff.

The invention discloses an application of a pyroptosis pathway inhibitor in protection of plateau brain impact lung injury, the pyroptosis pathway inhibitor is applied to preparation of a medicine for preventing and / or treating lung injury caused by plateau brain impact injury, the pyroptosis pathway inhibitor acts on a Caspase-1 / GSDMD signal pathway, the inhibitor comprises a Caspase-1 inhibitor, an ASC inhibitor or a GSDMD-D inhibitor, and the inhibitor comprises a Caspase-1 inhibitor, an ASC inhibitor or a GSDMD-D inhibitor. The medicine is used for improving lung function impairment caused by plateau brain impact injury. The lung function indexes comprise at least one of the maximum inspiration flow rate, the maximum expiration flow rate, the respiratory rate and the accumulated volume, and the medicine is used for relieving lung tissue pathological injury caused by the plateau brain impact injury; the pathological injury comprises at least one of pulmonary alveolar wall thickening, inflammatory cell infiltration, pulmonary alveolar cavity internal hemorrhage and pulmonary alveolar rupture and fusion into pulmonary bulla. The invention provides a new target spot and strategy for clinical prevention and treatment of the secondary lung injury of the plateau craniocerebral impact injury.

The invention belongs to the field of inorganic nonmetal materials, particularly belongs to a preparation method of an anti-bacterial tooth growing and repairing material, and relates to a growing and repairing anti-bacterial tooth material used in an alveolar cavity without a tooth or on the surface of an incomplete tooth. The anti-bacterial tooth growing and repairing material comprises the following main ingredients: apatite crystals containing silver, copper, calcium and phosphorus, titanium oxide and zinc oxide. Under the regulation and control effect of a binary polyelectrolyte compound consisting of water-soluble cationic polyelectrolyte and organic polyatomic acids, ingredients of the tooth growing and repairing material are synthesized with soluble calcium salt, soluble phosphate, copper sulfate and silver nitrate salt, a crystal natural growing method is used, and a dental matrix comprising the apatite crystals containing the silver, the copper, the calcium and the phosphorus, the titanium oxide and the zinc oxide are subjected to adsorption reaction fully. Crystalline grains of the anti-bacterial tooth growing and repairing material are in nanoscale, the copper and the silver can be fine and are uniformly distributed in the tooth growing and repairing material, diameters of metal particles are 30-80 nanometers, and the anti-bacterial tooth growing and repairing material can release anti-bacterial elements quickly and continuously.

The present invention belongs to the technical field of biomedicine, and specifically relates to the application of 9-hydroxy pentadecanoic acid in the preparation of a drug for preventing and treating lung injury. By establishing a mouse model of radon inhalation-induced lung injury, the present invention found that after exposure to different radon levels, the body weight of the mice decreased, the lung coefficient increased, the tidal volume, minute ventilation volume and maximum inspiratory flow of the lungs decreased, the respiratory function was inhibited, the alveolar cavities of the mice were abnormally dilated, the lung septum was thickened and fractured, accompanied by more fibrin exudation, obvious inflammatory infiltration appeared beside the bronchi, congestion occurred in the small blood vessels, and collagen deposition occurred in the lung tissue, which could lead to the occurrence of pulmonary fibrosis and cause lung injury. By intragastric administration of 9-hydroxy pentadecanoic acid, the above phenomena can be effectively inhibited. Therefore, 9-hydroxy pentadecanoic acid can be used for the prevention and treatment of lung injury, especially for the prevention and treatment of lung injury caused by radon exposure.

According to the orthodontic training device, air bags are fixedly connected to the outer sides and the inner sides of two connecting pads respectively, an orthopedic alveolar cavity is formed between the air bag on the outer side and the air bag on the inner side, inflation equipment is installed at the front ends of the air bags, the air bags can be expanded by inflating the inflation equipment when the orthodontic training device is used, and when the air bags are expanded, the orthodontic alveolar cavity is formed. The second outer side plate and the first inner side plate can move towards the inner side to reduce the volume of the orthopedic alveolar cavity, so that the effect of pressing the teeth is achieved, the teeth are shaped through the second outer side plate and the first inner side plate, and the volume of the orthopedic alveolar cavity is reduced according to the orthodontic condition of the alveolar cavity; the second outer side plate and the first inner side plate can provide compression force for the alveolar cavity all the time, the effect and efficiency of correcting the alveolar cavity can be effectively improved, and adjustment and use are convenient.

The invention discloses an oral periodontitis medicine applying device which comprises a tooth socket, a medicine storage grid and a medicine adding mechanism. A plurality of medicine storage grids are arranged on the inner side and the outer side of the tooth socket in an array manner; one side of the tooth socket is provided with a tooth socket, and the other side is provided with an annular limiting groove for installing the dosing mechanism; through holes are formed in the inner side wall body and the outer side wall body of the alveolar cavity in an array mode to communicate with the medicine storage grids on the corresponding sides, and ball grooves are formed in the front ends of the through holes in the alveolar cavity to install balls; the medicine adding mechanism comprises an annular sliding block, a support, a telescopic air bag and a soft wire spring. Supports are symmetrically arranged on the two sides of the annular sliding block, and a telescopic air bag and a soft wire spring are arranged on the side wall of the annular sliding block and connected with the wall body of one end of the sliding groove; a first liquid inlet valve, a second liquid inlet valve and a third liquid inlet valve are arranged on the annular sliding block in an array mode. The middle of the support is provided with a guide pipe communicated with the second liquid inlet valve, and the tail end of the support is provided with a sleeve communicated with the first liquid inlet valve. The extrusion head is slidably mounted in the sleeve.