88 results about "Tooth Supporting Structures" patented technology

Early dental caries detection is carried out by a method that combines optical coherence tomography (OCT) and Raman spectroscopy to provide morphological information and biochemical specificity for detecting and characterizing incipient carious lesions found in extracted human teeth. OCT imaging of tooth samples demonstrated increased light back-scattering intensity at sites of carious lesions as compared to the sound enamel. Raman microspectroscopy and fibre-optic based Raman spectroscopy are used to characterize the caries further by detecting demineralization-induced alterations of enamel crystallite morphology and / or orientation. OCT imaging is useful for screening carious sites and determining lesion depth, with Raman spectroscopy providing biochemical confirmation of caries. The combination is incorporated into a common probe operable without movement to scan the tooth surface and to provide an output for the dentist.

The present invention discloses an abutment of a dental implant consisting of an abutment screw and a shoulder surface. The upper structure of a crown or bridge abutment, i.e., the abutment screw is made of titanium alloy, and surface-treated in brown color by an anodizing process, and the connecting structure thereof, i.e., the shoulder surface is made of ceramic material containing zirconia of a white color, thereby providing an adequate mechanical strength, while maintaining the natural color of human teeth and light permeability. Further, the present invention discloses a method of aesthetically surface-treating the abutment screw of a dental implant abutment by using the anodizing process, and a method of fabricating the shoulder surface of a dental implant abutment.

Improved systems and methods for producing dental restorations and ceramic materials for such restorations are disclosed. Optical properties, preferably including color and translucence characteristics, of a tooth or teeth of a patient are measured with a shade measuring instrument. The tooth to be restored is prepared, and a physical or virtual dental impression is created. A prescription for the restoration, which typically includes color, translucence and thickness information, is sent to the restoration fabrication facility either electronically or physically. A recipe and / or a mixture of ceramics are generated for the restoration, with multiple layers being specified, based on the measured optical properties. The recipe algorithm may adapt, or process checks may be performed, based on measurements of fabricated layers. Preferably, dental ceramics are specified to bracket the region of color space relevant to human teeth, and a reduced set of ceramic materials are manufactured and distributed. Based on measured optical characteristics of the ceramic materials, recipes and / or material mixtures are specified or prepared for the restoration. A virtual impression data file may be transmitted to the laboratory instead of a physical impression.

A preformed mandible splint and a method of aligning and stabilizing a fractured mandible with such a splint is disclosed. The splint is configured to approximate the curvature of the lower teeth or the gingiva of the lower jaw. The curvature of an eight inch diameter sphere approaches the geometric curvature of the human teeth and gum, therefore, the similarly configured splint of the present invention is usable for almost any child or adult. The splint is approximately U-shaped, follows the human dental arcade, and has rows of holes or slots along its outer and inner perimeter. The splint is placed on the teeth or gingiva and wired through the holes or slots to the mandible thus correctly aligning the mandible. Fractures can then be screwed into place according to the curvature of the splint. This eliminates the need of wiring the patient's jaw shut as is presently done in current interdigitation techniques where even minute errors in mandibular repair results in flagrant morbidities in the patient. The U-shape allows the patient's tongue to freely move. Because the splint uniformly fits the population it can be preformed. The gumline follows the same curvature as the teeth, therefore the splint may be used on those without teeth by being placed directly on the gingiva.

A bite-block device for preventing biting of air tubes, such as laryngeal mask airway (LMA) tubes by human teeth is disclosed. The device is composed of a generally cylindrical body, fabricated from a biologically compatible polymer. A hole is present through the long axis of the body. The device also extends in a plane perpendicular to the long axis of the body. Attached to this plane is a coupling device intended for securing an LMA tube to the bite-block. The bite-block is positioned within a patient's mouth against the cheek, with the plane perpendicular to the long axis pressed against the lip. Deployed in this fashion, the bite block engages the molars, bicuspids, and cuspids, preventing contact of the teeth with an LMA tube.

A dental hygiene apparatus including a mouthpiece formed of a flexible arcuate channel defining and inner space designed for receiving an upper or lower set of human teeth. The channel is provided with longitudinally extending tunnels interconnected by communicating passageways. Each of the tunnels is provided with a longitudinally extending track and a guide slot communicating with the inner space. A carriage assembly includes motor assemblies joined by rigid chassis rods. The carriage assembly is designed such that the motor assemblies may be disposed in the tunnels while the chassis rods are disposed in the passageways. The motor assemblies have a shaft extending through one of the guide slots and carrying a rotatably mounted cleaning head on a distal end. The motor assemblies also include a driven wheel resting on a one of the tracks, for propelling the carriage assembly along the tracks. The cleaning heads rotate to clean the teeth and travel along the tracks to clean each tooth in sequence.

Tooth brace visual indicia for a brace system for human teeth, including an indicia apparatus for engagement with at least one component of a brace system for human teeth. The indicia apparatus includes an attaching carrier removably attachable to the at least one component of the brace system, and the attaching carrier is in operational engagement with or integrally formed with visual indicia. A visual indicia system and a method of providing visual indicia are also disclosed.

Systems, processes, techniques, and apparatus are described for thermolytic eradication of bacteria and biofilm in the root canal of a human tooth involve an elongated and flexible optical probe and a laser oscillator that provides the probe with near infrared energy. The optical probe can be sufficiently long for insertion into substantially the entire length of the root canal of the tooth. The optical probe causes lateral dispersion of the radiation from the probe throughout the root canal. The radiation is provided at an energy density and for a period of time that are necessary to selectively target bacteria and live biofilm in the dentinal tubules of an entire root canal system, at once, thereby (1) inhibiting creation of a blackbody “hot tip”, and (2) inducing laser interstitial thermotherapy (LITT) within the root-canal space. Near infrared wavelengths from about 700 nm through about 1100 nm can be used.

A device for use in retracting a gingiva from a human tooth by widening a gingival sulcus with a dental composition. The device comprises a cannula with a free end having an opening for dispensing the dental composition. The free end is shaped to be inserted with its front in the entry of the gingival sulcus, and to laterally displace the gingiva from the tooth as the cannula is moved in the gingival sulcus. The invention may help to achieve a reliable and cost effective gingival retraction treatment.

A method for constructing banks of human dental pulp stem cells comprises the steps of acquiring basic information, obtaining dental pulp stem cells, cryopreserving and putting dental pulp stem cells into cell banks and recording and checking information. When the banks of dental pulp stem cells are used, recovery and multiplication culture are carried out in accordance with the actual demands. In the method, the dental pulp stem cells are obtained from dental pulp of waste healthy human teeth and a reserve bank for effective resources is established by using system engineering. A great quantity of dental pulp stem cells with functional activities can be obtained through short-term culture of the human dental pulp stem cells stored in the banks and can be stored for long term without losing the activities. Compared with the prior art, the invention is characterized in that the construction operation specification is simple, easy to grasp, safe and feasible; the bank construction cost is low and the standardization degree is high; and the cells from different age groups adopt different cryopreservation solution so that the activities of the recovered cells are enhanced, thus expanding the sources of the cells and enhancing the activities of the cells. The teeth used in the method are those which are extracted for various reasons and are waste, thus greatly saving the medical resources; therefore, the construction has wide application prospect.

A natural anhydrous oral care composition with a limited number of naturally-derived, naturally processed, generally regarded as safe (GRAS) ingredients including an effective amount of a bioactive glass is described. The topical application of the composition to human teeth cleanses, remineralizes and reduces plaque build-up on teeth.

A medical implant comprising in combination a synthetic, biological, or autologous matrix (or scaffold) and pluripotent stem cells derived from human teeth. Stem cells are harvested from the dental pulp of extracted wisdom teeth. After the stem cells are removed, the hard tooth is ground into a base material for the manufacture of a porous matrix bone into which the stem cells can be added. Additionally, soft tissue from the harvested tooth may be used as a carrier scaffold for soft tissue applications such as meniscal or cartilage repair.

The invention relates to a nanometer zirconium oxide composite ceramic material, a tooth color-imitating nanometer zirconium oxide composite ceramic tooth and a preparation method thereof and belongs to the technical field of zirconium oxide composite ceramic teeth. The nanometer zirconium oxide composite ceramic material comprises the following raw materials in parts by mass: 90-100 parts of nanometer zirconium oxide and 10-80 parts of organically synthesized colloid, wherein the organically synthesized colloid comprises the following raw materials in parts by mass: 10-50 parts of paraffin, 10-30 parts of polyethylene, 10-30 parts of polypropylene, 1-5 parts of stearic acid and 1-5 parts of oleic acid. The nanometer zirconium oxide composite ceramic material provided by the invention has a good mechanical property, excellent air permeability, strong chemical stability and excellent biocompatibility. The bending strength of the prepared ceramic tooth can reach 1200MPa, and the breaking tenacity can reach 9MN / m<3 / 2>. The tooth is extremely high in biofidelity and the color difference of the tooth with a human tooth is in a range of + / -1 chromatic degree.

The invention discloses jewelry made of pulverized and recombined primary human teeth, or baby teeth. The human deciduous dentin are partially pulverized and bonded with a chemical bonding agent in a frame configured to receive the pulverized dentin mold or pre-formed frame to create designs personalized to the family members.

The invention discloses a two-section implant with a spontaneous expansion function. The two-section implant is applied to restoration of teeth in dental implanting surgeries. The two-section implant comprises an implant body, an abutment, a connecting screw and an expansion screw, wherein the implant body is connected with the abutment through the connecting screw and is provided with an opening and a notch groove; the expansion screw is screwed into the implant body from the opening, and a wedged slope is utilized for promoting the expansion of the notch groove to generate a tensile force so as to make fastened. The expansion screw with a thread and a taper is screwed into the implant body, and the wedged slope is utilized for promoting the expansion of the notch groove so as to generate the tensile force, so that a fastening effect is achieved, the early-stage stability of the dental implant is improved, and a missing tooth can be restored immediately; and when the appearance of the implant is in the shape of an imitation human tooth root, the damage on bones of patients can be more minimized to a greatest degree on the premise of ensuring the early-stage stability.

Thoroughly cleaning teeth daily is indispensable for keeping human teeth healthy. However, plaque is generally not sufficiently removed because it is difficult to see. Conventional plaque-dyeing agents allow plaque to be seen easily but are complicated to apply and leave traces of dyes. A toothpaste includes an integrated plaque indicator and allows plaque to be temporarily dyed. A storage container has two separate chambers, one containing toothpaste mixed with dyeing agent and the other containing toothpaste mixed with decolorizing agent. The two pastes blend when the quantity required for cleaning teeth is dispensed. Even though decolorizing begins right away, it is slow enough to obtain an intensive initial dyeing effect. The dyeing substance spreads inside the mouth during brushing and allows plaque to be easily seen and removed by the user. A decolorization rate is calculated for removing plaque within an adequate period, with all visible dye disappearing after several minutes. A self-decolorizing dyeing solution and self-decolorizing dyeing tablets for professional use are also disclosed.

The invention relates to the fields of oral medicine and biomedicine, particularly a preparation method and application of a tissue-engineering human tooth root implantation material. The preparation method of the tissue-engineering human tooth root implantation material comprises the following steps: (1) separating, culturing and identifying human root tip dental papilla stem cells; (2) constructing an NFIC lentivirus vector; (3) preparing NFIC lentivirus vector transfected root tip dental papilla stem cells, screening the overexpression NFIC cell line, and inducing the cell line in a mineralization mode; and (4) incubating the overexpression NFIC cell line subjected to mineralization induction and a hydroxyapatite / tricalcium phosphate stent material together. The preparation method is simple to operate; and the prepared tooth root implantation material has small immunoreaction, and can be applied to preparation of human tooth roots.

A system for immediately placing a non-occlusive and non-functional temporary dental implant prosthesis in the jawbone of a human patient with the prosthesis having a size and shape of a natural human tooth.

This invention relates to one tooth friction test machine through human tooth analogue operation to test human tooth materials and stuff property, which comprises one pair of tooth friction test unit frames set with one piece of protruding wheels for reverse beams, wherein the test unit comprises one pair of contact upper and down tooth chewing analogue structure fixed with one inclination block and one movable block on inclination and one mobile spring reset part; the upper tooth analogue structure comprises one piece of T shape cover cylinder on beam fixed with analogue long tooth and match block.

The invention discloses a dental prosthetic material and a preparation method thereof. The method comprises the following steps: (1) soaking tooth enamel, dentin or titanium sheets by using a phosphoric acid aqueous solution or a mixed aqueous solution of peroxide and phosphoric acid; and (2) adding an aqueous solution of phosphate ions and fluorine ions into an Agarose-Ca solution to obtain a mixed solution, and placing the tooth enamel, the dentin or the titanium sheets treated by the step (1) into the mixed solution and obtaining the material on the tooth enamel, the dentin or the titanium sheets after the reaction is finished, wherein the Agarose-Ca solution is the aqueous solution of the agarose and calcium nitrate. The structure of the dental prosthetic material prepared by the method is close to natural human tooth enamel, and has phosphorite hexagonal prism crystals and enamel crystal column microstructures. The dental prosthetic material disclosed by the invention is expected to replace the conventional dental prosthetic material to repair the enamel damage caused by dental caries or other dental diseases, and also can serve as a groove sealing material for preventing the dental caries.

An endodontic file (6) including a discontinuity (18) formed within the file shank (7). The discontinuity (18) creates a safe breakage point at which the file (6) will fail prior to a failure occurring at any other point along the length (11) of the file. The safe breakage point prevents the tip (21) of the file (6) from becoming irremovably embedded in a human tooth (12) after file failure. Substantially the entire length (11) of the file (6) remains connected to the tip (21) after file failure, thereby providing a considerable portion of the file which may be gripped and manipulated in order to accomplish file removal. Empirical data is presented to permit proper characterization of the region surrounding the discontinuity (18).

The removable veneer for teeth is a cosmetic accessory adapted to overlay the teeth. The accessory includes a veneer designed to simulate perfectly positioned human teeth. A fastener system is employed to removably attach the veneer to the existing natural teeth of a user. Various teeth adornments may be attached to the veneer, if desired, when the wearer wants to assume a more modern look.

An endodontic file (6) including a discontinuity (18) formed within the file shank (7). The discontinuity (18) creates a safe breakage point at which the file (6) will fail prior to a failure occurring at any other point along the length (11) of the file. The safe breakage point prevents the tip (21) of the file (6) from becoming irremovably embedded in a human tooth (12) after file failure. Substantially the entire length (11) of the file (6) remains connected to the tip (21) after file failure, thereby providing a considerable portion of the file which may be gripped and manipulated in order to accomplish file removal. Empirical data is presented to permit proper characterization of the region surrounding the discontinuity (18).

The invention belongs to the technical field of dental molding apparatuses, and discloses an improved complete denture maxillary blank mold tray. The blank mold tray comprises a tray base located in the middle and a tray body composed of occlusion banks on the two sides. The positions of the occlusion banks correspond to alveolar ridge crests between the first premolar tooth and the second premolar tooth on the two sides of human teeth respectively. A tray handle connected with the tray base is arranged at one end of the tray body. A plurality of overflow discharge holes are evenly formed in the tray base. The width of the occlusion banks is gradually increased from one end close to the tray handle to the other end. Three fixing grooves are formed in the occlusion banks at intervals. Whenan impression is prepared from the maxillary blank mold tray, the primary occlusion position relation can be prepared; the length and the position of the tray handle cannot interfere with the motionsof an upper lip, operability is high, a patient can hardly be interfered with, a doctor can more easily observe whether the mandible of the patient stretches forwards or not, and the patient is more easy to control.

A decorative device for human teeth consists in fixing on a vestibule surface of a tooth or vestibule surfaces of a group of teeth, some decorative element in the form of a plate, polished or colored, made of metal or plastic, thereby producing a remarkable attraction on a user's teeth. The decorative device can be applied in a permanent mode, by adhering the decorative element to a vestibule surface of the tooth, or in a removable mode by pressing specially designed frames to hold in place a decoration fixed to the vestibule surface. Microspheres arranged in frame free surfaces, can be added to a metallic structure of chromium or a similar metal.

The invention provides a tooth correction nursing device, relates to the technical field of medical treatment and solves the technical problem that existing tooth correction scaler causes severe scratch to the surface of dental implants, porcelain-laminate-veneer teeth and porcelain teeth. The tooth correction nursing device comprises a scaler body that includes a mounting shank portion and a function execution portion; the function execution portion and the mounting shank portion are fixedly connected or of integrated structure; the function execution portion is provided with a friction impact buffer layer outside; the friction impact buffer layer is made of a flexible material and can buffer friction or impact which the function execution portion bears when in contact with an external object. The tooth correction nursing device is used for alleviating the harm to human teeth, dental implants, porcelain-laminate-veneer teeth or porcelain teeth which is caused by the scaler body duringdental cleaning, nursing and correction.

The invention discloses a composite material for tooth restoration and a preparation method thereof. The composite material is prepared from the following compositions in parts by weight: polyurethane, calcium hydroxyphosphate, styrene-acrylic emulsion, polyvinylpyrrolidone, a phase-transfer agent, polyglycolic acid fiber, 2-methyl-2-propenoic acid-2-(phosphonooxy)ethyl ester, silver cyclohexanebutyrate, an anti-oxidant, steamed bone meal, zirconia, silica, casein, methoxyphenol, ethanol and double distilled water. Compared with the prior art, the technical scheme comprises the following beneficial effects: the composite material for tooth restoration can be extremely well fused with human teeth, and is high in soundness and not easy to fall off; the composite material is simple to use, free of any toxic and side effects, safe and free of health hidden trouble; and the preparation method is relatively short in flow, simple to operate, low in cost, friendly to environment and high in economic benefit.