39 results about "Dental impaction" patented technology

The invention relates to the technical field of biological materials and clinical medicine, and provides an injection, a preparation method of the injection and application of the injection in dentalpulp regeneration. The injection comprises a composite preparation as a dispersion phase and a dispersion liquid as a continuous phase. The composite preparation comprises a drug, a microcarrier and stem cells, the drug is wrapped in the microcarrier, and the stem cells are attached to the surface of the microcarrier. The dispersion liquid is selected from at least one of a group consisting of a balanced salt solution, a serum-free culture medium and injectable hydrogel. The injection is mainly applied to regeneration of clinical functional dental pulp tissues, and regeneration of dental pulpin affected root canals is realized. By utilizing the injection, the formation of the nerve and vascularized dental pulp-like tissue in the root canal can be realized, the nutrition, defense and sensory functions of the dental pulp tissue are recovered, and the service life of the affected tooth is prolonged.

The invention discloses a treatment guide plate for root canal treatment. The treatment guide plate comprises a closing plate, and the closing plate comprises a matching surface matched with a tooth crown shape of a part of teeth or all teeth of an affected tooth or an affected tooth and an adjacent single tooth. Guide holes corresponding to corresponding root canals are formed in the closing plate, one end of each guide hole is located in the matching surface, the position design of the guide holes depends on the three-dimensional stress finite element analysis of the teeth, and a mechanical strut region of the teeth is avoided; when a drill pin penetrates through the corresponding guide hole to drill a marrow hole of the affected tooth, the mechanical strut structure of the affected tooth cannot be damaged by the drill pin, and the anti-stress structure of the tooth is protected; the teeth are prevented from being cracked when biting hard objects after operations. The invention further provides a preparation method. The preparation method of the treatment guide plate for root canal treatment is simple, mature and easy to popularize, and the prepared treatment guide plate effectively avoids damage to the mechanical strut structure of the affected tooth, so that the teeth can be prevented from being cracked when biting the hard objects after the operations.

The invention provides an isolation device used for isolating droplet transmission during oral cavity treatment. The isolation device comprises an inner ring face bow laminated to the periphery of theoral cavity, and an outer ring face bow for blocking the face, wherein the inner ring face bow and the outer ring face bow are in sealing connection through rubber cloth to form a horn-shaped structure; and the upper part of the outer ring face bow is connected with a bracket component used for supporting a nose space. The device can guarantee that a diseased tooth treated in the dental department is completely isolated from the oral cavity and the face of a patient so as to effectively avoid a risk that a liquid is in contact with the face of the patient in a treatment process, meanwhile, the patient breathes with the nose in the treatment process but does not directly inhale liquid drops splashed in the treatment process, and under a condition that a primary air system is cooperated, the patient can be prevented from inhaling aerosols polluted by treatment in consulting room. Even during a respiratory infectious disease outbreak period, the effective isolation and protection of thepatient can be guaranteed, and the treatment of oral cavity diseases is not hindered. Therefore, the device is suitable for being generally applied to dental department treatment.

The invention provides a full-digital design method for synchronously designing a tooth pile core and a crown by a computer. The method comprises the following steps of: synchronously completing pile path preparation and full-crown abutment tooth preparation for an affected tooth to obtain a silicone rubber impression including the pile path of the affected tooth and the full-crown abutment tooth form; modeling an impression scanning piece; designing a personalized pile core, and cutting and manufacturing a digital pile core by referring to an STL file; changing the gap of the pile core binder to a negative value at the beginning of the pile core design, so that the designed and output new pile core can smoothly penetrate into the digital model of the remaining tooth body, thereby fitting the new pile core and the remaining tooth body into a whole; and designing a full crown to achieve full-digital synchronous design of tooth pile cores and crowns. According to the method, the full crown can be immediately designed on the basis of the digital pile core after the digital pile core is designed by the computer, the pile core, the tooth body and the full crown are tightly combined at the computer level, the defects of an existing digital pile core technology are overcome, and the purposes of optimizing design steps, shortening the pile core and crown repair period of a patient and simplifying the manufacturing process of a technician are achieved.

The invention provides a root canal treatment guide plate and a preparation method thereof. The root canal treatment guide plate includes a base, a guide seat arranged on the base, and a guide deviceinstalled on the guide seat, wherein the base is fixed to an affected tooth in an attaching mode during treatment, and the guide seat is connected with the base through a positioning connection structure, the guide device is provided with a root canal guide channel, the guide device is installed on the guide seat according to the direction of a root canal channel of the affected tooth, and a rootcanal treatment instrument is guided by adaptively adjusting the direction and position of the root canal guide channel during the treatment to position a root canal of the affected tooth through theroot canal guide channel. According to the root canal treatment guide plate, adaptively fine-adjusting can be carried out during a matching process of the guide plate channel and the root canal channel, and therefore the positioning accuracy of the root canal of the affected tooth is improved.

The invention relates to the field of dental equipment, in particular to a positioning device for apical surgery and a preparation method of the positioning device. In order to reduce the risk of theapical surgery, improve the treatment quality and enable the long-term prognosis to develop well, the invention provides a positioning device for the apical surgery, which is characterized in that theperipheral side surface of a supporting plate is a convex arc surface; a positioning plate is located on the top face of the supporting plate and close to the peripheral side face of the supporting plate; a positioning through groove is formed in the positioning plate and is close to or located at the positioning end, away from the supporting plate, of the positioning plate; a positioning accessory is clamped in the positioning through groove; and a positioning guide through hole penetrating through the inner wall and the outer wall of the positioning accessory is formed in the positioning accessory. During use, the supporting plate is located between upper teeth and lower teeth of a patient, the positioning accessory is abutted against affected teeth, and the positioning guide through hole is located in the excision position of the root apex of the affected teeth. By using the positioning device for the apical surgery, the surgical risk can be reduced, the treatment quality can be improved, and long-term prognosis can be well developed.

The invention discloses a method for manufacturing a personalized root canal filler by utilizing a 3D printing mode. The method comprises the following steps: acquiring a CBCT (cone beam computed tomography) image of an affected tooth, reconstructing a three-dimensional model of a tooth root, performing 3D printing and manufacturing the filler. The personalized filler obtained through the method is highly matched with the prepared three-dimensional shape of the root canal, micro leakage can be reduced, the operation process can be simplified, the treatment time can be shortened, heat damage to periodontium can be avoided when the personalized filler is used for filling the root canal, and therefore the personalized filler can be widely applied to the technical field of root canal treatment.

The invention discloses a gingival flap traction protector which comprises a handle, a first working end and a second working end. The two ends of the handle are connected with the first working end and the second working end respectively; the first working end and the second working end are shovel-shaped; the shovel-shaped area of the first working end is larger than that of the second working end; the minimum thickness of the first working end is larger than that of the second working end; the tip of the convex surface of the first working end is inwards sunken to prop against the top of analveolar ridge after flap of the affected tooth; an operation field is fully exposed, gingival nipples are avoided, periodontal soft tissues are protected, accidental injuries caused by the fact thatthe soft tissues are drawn in by a bur belt can be prevented, the number and frequency of instrument replacement of a doctor in an operation can be reduced, the operation efficiency is improved, and infection possibly caused by frequent instrument replacement is reduced; and the working end is flatter, so that the sharpness of the blade part is reduced, possible artificial slippage or accidental injury in the operation process is reduced, and the operation safety of doctors is improved.

The invention discloses a multi-root implant tooth structure. The multi-root implant tooth structure is characterized by comprising a plurality of tooth root and abutment integrated structures, wherein the tooth root and abutment integrated structures are connected with one another. The bolt type assembled multi-root implant tooth structure is completely consistent with a multi-root tooth structure of a patient, and can be completely matched with a tooth socket after an affected tooth is pulled out, so that the clinical treatment process is simplified, the treatment cycle is greatly shortened, meanwhile, atrophy and collapse of soft tissues after tooth extraction can be effectively prevented, absorption of alveolar bones after tooth extraction is reduced, and the comfortable and beautiful effects of the patient can be improved. The bolt type assembled multi-root implant tooth structure is completely matched with the tooth socket of the patient, and has relatively high initial stability, so that an operator does not need to adopt a special implantation technology to increase the initial stability, the technical operation requirements on the operator and the infection risk of the postoperative patient can be greatly reduced, meanwhile, synostosis of an implant can be accelerated, and the implantation success rate is improved.

The invention relates to the technical field of medicine, and provides a dental stake removal guide plate, a system and a design and a manufacturing method of the dental stake removal guide plate. The dental stake removal guide plate comprises a supporting and fixing part and a restraining and guiding part, the supporting and fixing part is used for being arranged on a diseased tooth and an adjacent tooth, and the supporting and fixing part is provided with an exposure space for exposing the diseased tooth; the restraining and guiding part is arranged on the supporting and fixing part, a channel allowing the head of the dental handpiece to move is formed in the inner side of the restraining and guiding part, the channel is communicated with the exposure space, and a first opening allowing the neck of the dental handpiece to move is formed in the restraining and guiding part and is communicated with the channel. The restraining and guiding part arranged on the supporting and fixing part can serve as a guiding structure of the dental handpiece, so that a handpiece head of the dental handpiece stably moves in a channel of the restraining and guiding part, and a post core is ground to be removed.

The invention relates to the technical field of dental restoration equipment, and particularly discloses a veneer restoration body colorimetric plate system and a manufacturing method thereof. The method comprises the following steps that veneer preparation is performed on a standard tooth model to form standard-form abutment teeth; a corresponding female die is manufactured according to the standard-form abutment teeth; the female die is filled with resin with different tooth body colors to manufacture resin abutment teeth with different hues, and arranging is performed according to a specified hue sequence; digital images before and after standard tooth model preparation are prepared by using a scanner, and through a copying method, veneers of which the surface forms are consistent withstandard tooth model preparation parts are designed by CAD/CAM computer assistance; and different materials are selected to manufacture veneers, and arranging is performed in a classified mode according to different materials. The method can be consistent with clinical practice, the influence of porcelain materials, adhesive hues and abutment tooth colors on the final aesthetic effect of the restoration body is fully considered, resin abutment tooth and veneer combined color selection is performed, the color of the veneer restoration body is predicted with the optimal effect, and the natural aesthetic effect of affected teeth is recovered.

The invention provides an open-face preformed dental crown which comprises a crown body and a crown face buckled on teeth, the crown body and the crown face are integrally formed, the crown face is located at the upper end of the crown body, an opening (3) is formed in the crown face, and the opening is located in the center of the crown face; and the crown body is in a shape with the middle protruding and the neck edge narrowing slightly, the crown body is hollow and communicated with the opening, the crown body is connected with the crown face through an arc, and an inverted buckle support is further arranged on the crown face. The invention further provides a using method of the open-face preformed dental crown. The using method comprises the following steps: (1) preparing a tooth; (2) selecting a model; (3) wearing; (4) filling; and (5) adjusting occlusion. According to the method, a diseased tooth repairing process can be completed in one step, namely, after caries tissue of a caries tooth is removed, the caries tooth is directly tried on and bonded with the open-face type preformed dental crown, then the opening is filled with a dental light-cured resin material so as to form the occlusal surface, customization is not needed, use is convenient, time is short, problems can be solved at that time, efficiency is high, and cost is low.

The invention belongs to the technical field of dental restoration, and discloses an implant with a titanium plate retention structure, a preparation method and application, CBCT scanning is performed on a patient before an operation, and data in a DICM format is imported into Mimics software for three-dimensional reconstruction of a jaw bone in an affected tooth area; importing the obtained jaw data into 3shape to determine an implantation position and direction, and importing a digital model of the implant; in Powershape and Geomagic, according to the jaw bone condition of a patient, the position of a retention hole is determined on the outer side bone wall of the dental implant cheek-palate side, and screw hole modeling is carried out; drawing a sketch according to the shape of the bone wall, drawing a mold, connecting the implant with the screw hole, enabling the implant to be tightly attached to the jaw bone, and outputting implant data; and carrying out cutting processing and fine polishing on the obtained data to obtain the implant with the titanium plate retention structure. Good initial stability can be obtained on the remaining alveolar bone of a patient through the titanium plate connected with the implant.

The invention discloses a negative pressure device attached to dental tissue, and belongs to the technical field of negative pressure devices attached to dental tissue. The negative pressure device comprises a shell, and two guide rails are welded to the inner wall of the shell; a sliding block is slidably connected to the inner walls of the guide rails in a matched mode; a push rod is welded to one side of the surface of the sliding block and located on the surface of the shell; a suction opening is formed in one side of the surface of the shell; a limiting frame is welded to the side, closeto the suction opening, of the sliding block; four supporting springs are welded to one side of the surface of the shell; the surfaces of the supporting springs are wrapped with medical sealing sleeves; the medical sealing sleeves wrapping the surfaces of the supporting springs are close to an affected tooth, and at the moment, the negative pressure machine generates suction force; the supportingsprings deform under the action of suction force and are tightly attached to the affected tooth, so that polishing matching treatment is not needed; and a filter screen frame is installed on the surface of the shell during adsorption, so that part of relatively large affected tissue is intercepted, and convenience is provided for subsequent examination treatment.