15 results about "Root surface" patented technology

The present invention discloses an artificial crown for maxillary molars, the crown comprising a co-crown restoration, the gingival end of the co-crown restoration being provided with a drainage channel, the drainage channel being used for cleaning the gingival end of the co-crown restoration; in a state of use, a channel is formed between the drainage channel and the gums, both ends of which are connected to the oral cavity. The drainage channel is preferably in a mesiodistal direction; in a state of use, the drainage channel is located between the palatal root and the mesiodistal buccal root, and the proximal and distal ends of the drainage channel are both biased toward the palate. The artificial crown for maxillary molars of the present invention is designed with a drainage channel at the gingival end, which is beneficial to the self-cleaning of teeth, can remove hidden plaque and tartar, control periodontitis, prevent root caries, and improve the long-term efficacy of co-crown restoration after maxillary molar root separation surgery.

This invention relates to the field of biomaterials, specifically to the application of an acidic hydrolysate of a giant salamander mucus extract in the preparation of a root surface treatment agent. The root surface treatment agent comprises a product obtained by reducing lyophilized powder of salamander skin secretions with an acidic solution at a concentration of 0.2-0.3 mol / L and a pH of 1-5, wherein the mass ratio of the lyophilized salamander skin secretions to the acidic solution is (1-3):1; the resulting root surface treatment agent, after adjustment with an alkaline solution, has a pH of 6-6.5. This root surface treatment agent demonstrates significant potential in promoting natural tooth replantation and restoration, with effects including promoting early load stabilization through natural wet bonding, assisting in the construction of a regenerative microenvironment through active proteins, and promoting adhesion between periodontal ligament stem cells and the matrix by enhancing adhesion signal expression.

The present invention provides a tooth root extraction elevator, which relates to the technical field of oral medical instruments, and comprises a gripping part, a connecting part and an ejecting part; the gripping part is connected to the ejecting part through the connecting part, and the gripping part is convenient for transmitting force through the connecting part; the connecting part and the ejecting part are arranged at an obtuse angle, so when the ejecting part acts on the residual root, broken root or residual crown, the excessive pulling on the corners of the patient's mouth is reduced, and the risk of straining or tearing the corners of the mouth is reduced, thereby strengthening the protection of the corners of the mouth, and embodying the "love injury concept"; the inner concave part is provided with an arc groove, so that it can more smoothly reach the root bifurcation of the neck of the residual crown or the root surface near the root of the residual root and the broken root, or even the root apex, reducing the waste of time for flap bone removal and excessive damage to soft tissue, embodying the "minimally invasive concept", eliminating the difficulty that the tooth root extraction elevator cannot fit the root shape, and alleviating the technical problem in the prior art that the tooth elevator cannot accurately apply force, resulting in accidental injury and extraction failure.

The present invention belongs to the technical field of medical devices, and in particular relates to a tooth fixing device and method for autologous tooth transplantation or replantation, comprising a clamping device and a storage bag. The ex vivo tooth is immersed in a Hank's balanced salt solution in the storage bag, and the ex vivo tooth is fixed upside down in the clamping device through the storage bag. During the process of fixing the ex vivo tooth and operating the tooth root of the ex vivo tooth, the ex vivo tooth is always in the Hank's balanced salt solution, so that the ex vivo tooth is placed in a sterile environment, the activity of the periodontal membrane is maintained to the greatest extent possible, and the root surface is kept clean to prevent the adhesion of gutta-percha and debris, thereby improving the success rate of tooth transplantation and tooth replantation.

The utility model relates to the technical field of microfluidics, and discloses a microfluidics experimental device, which solves the problems in the background technology, and comprises a substrate, the substrate is made of a transparent material, the substrate is provided with a channel, the channel is provided with two inlets and an outlet, the two inlets are communicated with each other, and the two outlets are communicated with each other. The top of the channel is also provided with a culture unit, and the culture unit is communicated with the channel, so that in the long-term imaging process, the experiment conditions can be accurately controlled, and the dynamic behaviors of fungi on the root surface and around the root surface can be captured.

The invention discloses an electric periodontal curettage device with a resistance sensing function and a control system of the electric periodontal curettage device, and relates to the technical field of periodontal disease treatment instruments. The electric periodontal curettage device with the resistance sensing function and the control system of the electric periodontal curettage device with the resistance sensing function comprise a host, a curettage mobile phone and a foot switch, one side of the host is connected with the curettage mobile phone through a power line, and the other side of the host is connected with the foot switch through a power line. Resistance change of the working head in the periodontal scaling process is sensed in real time through the vibration sensor, vibration spectrum and current fluctuation are analyzed in combination with an intelligent algorithm in the host, a tartar attachment area and a healthy tooth root face are accurately recognized, tooth damage caused by excessive scaling is avoided, local illumination is provided by the LED lamp beads, the operation view definition is improved, and the working efficiency is improved. And personalized treatment requirements are met by matching with a replaceable working head. The system displays the sensing information on a display screen in real time to assist doctors in mastering the treatment progress, so that the operation safety and efficiency are improved.

The invention discloses an in-vivo environment simulating device for in-vitro root canal treatment of autotransplanted teeth, which is characterized in that the neck of an extracted tooth is clamped by a clamping assembly and is fixed on a base, and the root of the extracted tooth is moisturized by nutrition mist by a moisturizing assembly; effective fixation of extracted teeth in the in-vitro root canal treatment process is achieved, the activity of periodontal ligament cells is maintained, pollution of tooth root surfaces is avoided, and the success rate of tooth transplantation is increased.

The utility model discloses an in-vitro tooth scraping device special for intentional tooth replantation, a handle is connected with a first scraper and a second scraper, the blade of the first scraper is of an inward concave structure, the blade of the second scraper is of a hook-shaped structure, the inward concave structure can be attached to the peripheral contour of the neck of a tooth, and the hook-shaped structure can be attached to the root contour of the tooth. According to the tooth curettage device, the scrapers for curettage of the tooth roots and the tooth peripheries are combined into a whole, the tooth neck periphery and root integrated curettage device is formed, and the tooth curettage device is small in size and convenient to take and use. A worker can select the first scraper and the second scraper of different models and / or sizes to perform subgingival scaling operation of the teeth of a patient, the first scraper is used for scaling the surfaces of the peripheries of the teeth, the second scraper is used for scaling the surfaces of the roots of the teeth, scaling operation of the peripheries of the teeth in multiple directions can be met, and the scaling efficiency is improved. And a smooth and flat surface with good histocompatibility is more easily formed under teeth and gingiva.

The invention aims to provide a special forming set for dental caries of tooth root surfaces, and relates to the technical field of medical instruments, an extension part is integrally formed below a sleeve sheet, and the extension part can be inserted into gingiva to fit the deep root surfaces of the teeth; the upper side and the lower side of the fixing piece can be tightened through adjusting holes formed in the upper side and the lower side of the two ends of the sleeve piece respectively, so that the upper end and the lower end of the forming piece can be better attached to the side faces of the teeth; the distance between the insertion rods can be tightened by rotating the large thread sleeve and the small thread sleeve, so that the upper part and the lower part of the sleeve piece are tightened respectively, the upper part of the sleeve piece is attached to a dental crown part, and the lower part of the sleeve piece and the extension part are better attached to the deep root surface of the tooth.

The present application provides a kind of dental implant and dental implant restoration system, dental implant includes the neck, middle and root that are sequentially interconnected, the neck is columnar, with diameter D1;The middle is conical, with maximum diameter D2, the middle surface is equipped with middle outer thread;The root is columnar, with diameter D3, the root surface is equipped with root outer thread;And D1, D2, D3 The value size satisfies: D2 has greater than the maximum value of D1, D3, can improve the initial stability of implant.The present application is particularly suitable for the alveolar bone condition of insufficient bone mass or osteoporosis by the unique implant shape design and matching drill system, can significantly enhance the initial stability of implant, reduce the risk of implant loosening, thereby effectively improve the success rate of implant.

The utility model relates to the field of oral medical instruments, in particular to an inverted filling instrument for an apical operation, which comprises a first filling head, a second filling head, a first connecting rod, a second connecting rod, a handle and a transfer head. The other end of the handle is connected with the second connecting rod, and the second connecting rod is connected with the transfer head. The plane where the arcs of the two filling heads are located forms a 90-degree angle with the long axis of the handle. The portion, connected with the transfer head, of the second connecting rod is arc-shaped, and the plane where the arc is located is parallel to the connecting line of the tips of the first filling head and the second filling head. The inverted filling instrument for the apical operation has the advantages of being simple in structure and diverse in function, the transfer head can carry paste apical inverted filling materials formed in advance to a root cutting face, and the two filling heads are suitable for inverted filling operation of all tooth positions.

Methods are disclosed for treating periodontal disease, peri-implantitis, or to preserve a tooth socket in a subject. These methods include selecting a subject with periodontal disease, peri-implantitis, or in need of tooth socket preservation; and locally administering into the periodontium of the subject a therapeutically effective amount of a tissue-nonspecific alkaline phosphatase (TNAP) polypeptide, or a nucleic acid molecule encoding the recombinant TNAP polypeptide. Methods are also disclosed for i) promoting alveolar bone regeneration in the subject; ii) increasing attachment of a periodontal ligament to a root surface of a tooth in the subject; iii) increasing cementum formation; and / or iv) increasing mineralization in a tooth in the subject. Pharmaceutical compositions are also disclosed that are of use in these methods.

The utility model discloses an adjacent tooth defect filling and forming device, and relates to the technical field of oral medical instruments. In order to solve the problem that the existing filling technology is tedious in operation, the utility model designs an adjacent tooth defect filling and forming device which is structurally characterized by comprising a fixed former and a locker, the fixed forming device is x-shaped, conforms to the structure between two adjacent teeth, can be better attached to the tooth surface, and is vertically arranged at the tooth gap; the locking devices are respectively arranged on the cheek side and the tongue side of the fixed former; the locker controls the fixing former to be attached to and fixed to the tooth surface so as to repair adjacent root face caries.

A method for securing an elongate rod to a spinal fixation structure having a receiver and a threaded closure. The method includes providing the elongate rod, the receiver, and the closure. The closure includes a thread form having a stab flank, a loading flank, an outer crest surface with a crest height, and a root surface. The thread form also includes a base height that is greater than the crest height.