9 results about "Root surface" patented technology

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 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 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 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.

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.