87 results about "Dental fillings" patented technology

The interproximal composite carver is a dental instrument configured to carve composite material used in dental fillings from the interproximal surfaces of a tooth. The instrument has an elongated handle with a curved blade attached to each of its two ends. The cutting edge of one of the blades is oriented to carve along the left side of a tooth when the blade is inserted into a patient's mouth, and the cutting edge of the other blade is oriented to carve along the right side a tooth when inserted into a patient's mouth. With the cutting edges oriented in opposite directions, the instrument can be used in an ergonomic manner on either side of a given tooth by simply changing which end of the instrument is inserted into the patient's mouth.

A dental injecting apparatus for injecting a dental filler and a dental tool attached to such a dental injecting apparatus. The apparatus includes: an injection rod for injecting a dental filler; an injection rod driver for performing a dental filler injecting operation that causes the injection rod to move in a dental filler injecting direction by using the force of a power source; and a controller for controlling the dental filler injecting operation of the injection rod driver.

The invention discloses a dental filling composite resin using a silicon dioxide nano-fiber as a filler. The resin is prepared from the following raw materials in percentage by mass: 18-22 percent of bisphenol A-glycidyl methacrylate, 4-16 percent of triethylene glycol dimethacrylate, 0.5-1 percent of camphorquinone, 0.5-1 percent of ethyl 4-N,N-dimethylaminobenzoate and 60-75 percent of silicon dioxide nano-fiber. The preparation process is simple and easy to operate, the raw materials are easily available at relatively low price, and the prepared composite resin has excellent physical mechanical performance, good abrasion resistance and long service life, has the characteristics of light color, low polymerization shrinkage and the like, and is expected to be used in clinical application.

Provided is a dental filling/restoration kit, in which a pretreatment material and a filling/restoring material can be cured by only one irradiation with light, which enables further improved adhesion between a tooth and the filling/restoring material, which prevents the filling/restoring material from being easily colored, to thereby exhibit its excellent sensuousness. Specifically provided is a dental filling/restoration kit which includes: a filling/restoring material (A) containing 100 parts by mass of a radical-polymerizable monomer (a) containing 3 to 30 parts by mass of a water-soluble radical-polymerizable monomer having no acidic group (a1), a photopolymerization initiator (b), and a filler (c), the filler (c) being contained in an amount of 80 to 2,000 parts by mass relative to 100 parts by mass of the radical-polymerizable monomer (a); and a pretreatment material (B) containing a radical-polymerizable monomer having an acidic group (d) and water (e).

The invention relates to highly charged cationic dental compositions, comprising at least one compound (A) which may undergo cationic reactions, at least one dental filling (B), optionally at least one dispersant (C), comprising at least one organic polymer or copolymer, at least one cationic photocuring agent and optionally at least one photosensitizer (E), said composition being characterised in that at least one dental filling (B) is treated by a) at least one organosilicon coupling agent (F) and b) at least one compound (G), said organosilicon coupling agent (F), comprising at least one reactive function (frA) directly bonded to a silicon atom forming a chemical bond to the dental filling after activcation and at least one reactive function (frB) indirectly bonded to a silicon atom forming a chemical bond to a reactive function (frC) of the compound (G).

The invention provides a low-elastic-modulus beta type titanium alloy for dental filling. The low-elastic-modulus beta type titanium alloy is characterized by being prepared from alloy components according to the weight percent: 23 to 24 percent of Mo, 12 to 13 percent of Nb, 2.5 to 2.8 percent of Zr, 2.1 to 2.2 percent of Al, 1.1 to 1.7 percent of Cr, 0.5 to 0.6 percent of Ag, 0.2 to 0.3 percentof Fe, 0.4 to 0.7 percent of Ta, 0.15 to 0.2 percent of Cu, 0.3 to 0.45 percent of Hf, 0.2 to 0.4 percent of Sn, 0.05 to 0.08 percent of Er, less than or equal to 0.05 percent of O, less than or equalto 0.01 percent of H, less than or equal to 0.02 percent of C, less than or equal to 0.01 percent of N and the balance of Ti and unavoidable impurities; the beta type titanium alloy formed by heat treatment has the average crystallization grain diameter of 20 to 40mu m, the yield strength of 900 to 1000MPa, the tensile strength of 1020 to 1150MPa, the elongation percentage of 15 to 17 percent, the Young's modulus of 40 to 60GPa, the primary alpha-phase volume percent of 22 to 25 percent, the size of 2 to 3 microns and the secondary alpha-phase volume percent of 22 to 25 percent.

A dental tool for use in photo-cured filling processes. The dental tool includes a tool tip formed from a material that allows the transmission of ultraviolet and visible light wavelengths through the tool tip without significant distortion or reflection. The material is also relatively high strength so not to shatter or break during use. The fill material will also not easily adhere to the tool. The material of a preferred embodiment is sapphire. The tool is able to continue to compact and shape the fill material while the composite polymer fill material is undergoing photo-curing. The light beam used for photo-curing is able to safely pass through the tool without the risk of damage to the surrounding tissue from reflection or distortion of the light beam.

The invention relates to a design method of a positioning device of an orthodontic removable appliance, which comprises the following steps of: (1) preparing a retention accessory on teeth from dental filling resin; (2) preparing a tooth model in the mouth; (3) making the removable appliance on the model prepared in the previous step by utilizing the retention accessory, and thus, the removable appliance base forms a groove , the size of which is identical to that of the positioning accessory in the position of the tooth retention accessory in the mouth. The invention has the characteristics of simple operation, good positioning effect and attractive appearance.

The visible light hardened filling composite material for dental filling and its preparation process belongs to the field of dental repair material making technology. The composite material is prepared through mixing polymerisable dimethylacrlyate resin comprising dimethylacrlyate pre-polymer and active dimethylacrlyate diluent, visible light initiator cyclic pepper compound or its derivative, and inorganic filler of quartz and/or glass, and irradiation with visible light. The composite material has the features of high initiating efficiency, high mechanical performance, good use performance, low toxicity and good biocompatibility.

Provided is a curable composition including a polymerizable monomer component (A), a spherical filler (B) having an average particle size within the range of 230-1000 nm, and a polymerization initiator (C), wherein the curable composition is characterized by having a value (V) of less than 5 and a chroma (C) of 0.05 or higher in colorimetric values according to the Munsell Color System in colored light on a black background, and a value (V) of 6 or higher and a chroma (C) of less than 2 in colorimetric values according to the Munsell Color System in colored light on a white background, each of the values (V) and chroma (C) being measured using a color difference meter in a state in which a 1-mm-thick cured article has been formed.

The invention relates to an image big data acquisition and processing method. The method includes providing and using of a multifunctional dental filling system based on image recognition. The system comprises data acquisition equipment, image processing equipment, image recognition equipment and automatic filling equipment. The data acquisition equipment is used for high-definition oral image data acquisition in an oral environment of a patient to obtain high-definition oral images; the image processing equipment is used for processing the high-definition oral images to obtain processed oral images; the image recognition equipment is used for recognizing target teeth and tooth cavities in the target teeth on the basis of the processed oral images and determining actual sizes of the tooth cavities on the basis of tooth cavity sizes and target tooth sizes; the automatic filling equipment starts a coarse adjusting mode after receiving the actual sizes of the tooth cavities, determines corresponding filler volumes on the basis of the actual sizes of the tooth cavities in the coarse adjusting mode, and injects filler into the tooth cavities of the target teeth according to the determined corresponding filler volumes.

A polymerisable dental filling and sealing composition is provided which comprises a mixture of at least one resin containing on average at least two acrylate or methacrylate groups and a copolymerisable methacrylate or acrylate monomer, which has a low viscosity compared with said resin, the copolymerisable monomer being present in an amount such that the composition can be introduced by syringing into a cavity having a diameter of less than 1 mm.

The present invention relates to a use of a poly(dialkylsiloxane) having terminal hydroxyl groups, wherein the alkyl groups contain 1 to 4 carbon atoms, for improving the strength and the surface of dental fillings that are based on glass ionomer cement compositions.

Embodiments of the present invention provide devices (tags), systems, and methods to determine structural integrity and other states of materials-of-interest, such as dental fillings, implants, and root canal posts, to name a few, in a non-invasive and contactless way; and using comparatively safe and/or low energy electromagnetic radiation, such as radio waves. Negligible-sized backscatter-tags with sensors are implanted in such materials-of-interest. Using backscatter imaging technology, the structural integrity and other states of the materials-of-interest may be monitored; which may allow non-invasive and contactless detection of problems such as cracking, bending, excessive pressure, improper temperature, and/or the like. Additionally, initially unknown locations of the implanted negligible-sized backscatter-tags with sensors may be readily determined upon a given scanning (reading) session; and thus mapped to provide an effective image of the material-of-interest.

Disclosed are compositions and methods of using such compositions for inhibiting matrix metalloproteinase activity in dental tissue. The compositions, methods and uses may prevent degradation of the bonding between restorative materials and dental tissues, thereby increasing durability and longevity of the restorative material-dental tissue bonds. For example, the compositions, methods, and uses of the present invention may be used for treating carious dental tissue such as by the creation of dental fillings, crowns, bridges, among other techniques, as well as the creation of esthetic laminate restorations.

The present invention relates to an aqueous dental glass ionomer composition for use in the treatment of cavitated carious lesions, which composition comprises a water-soluble, polymerizable polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the polymerizable polymer has a polymer backbone and pendant groups having one or more polymerizable carbon-carbon double bonds. The dental glass ionomer composition is used as a permanent direct restoration.

The invention belongs to the field of nanometer materials, and particularly relates to composite resin used for dental filling and a preparation method thereof. The composite resin used for dental filling includes, by weight, 55-70 parts of polyacrylic resin, 15-30 parts of chitin, 10-15 parts of nano-silica, 1-8 parts of plasticizer, 0.1-2 parts of coupling agents, 0.2-1 part of antioxidant and 5-10 parts of caries preventive agents. In the preparation process, the polyacrylic resin and the chitin are mixed evenly; other materials are added and mixed evenly; and finally double-screw extrusion granulation is carried out. The composite resin used for dental filling is good in biocompatibility, good in abrasion resistance and suitable for dental filling on the aspect of viscosity. The preparation method is simple, feasible and suitable for production.

The invention relates to dental pulp capping and pulp retaining paste, which is prepared from iodine glycerin, iodophor, phenocamphor, creosote and zinc oxide powder, wherein the volume ratio of the iodine glycerin: the iodophor: the phenocamphor: the creosote is (3 to 4):(1 to 2):(1 to 2):(3 to 4); the ratio of the creosote(mL): the zinc oxide powder (g) is 1:(4 to 6); all ingredients are mixed and are prepared into the paste, and thus the dental pulp capping and pulp retaining paste is obtained. The paste has the advantages that after dental pulp is exposed, the nerve burnt killing, the nerve removal and the root canal therapy are not needed; the whole tooth body with the tooth root becomes a dead tooth; the dental pulp capping and pulp retaining paste is directly smeared on the exposed surface of the dental pulp, hard hulls can be formed on the surfaces of dental pulp active body cells; the normal physiological function state of the tooth body is stably recovered; in addition, the treatment process time is shorter; the subsequent consultation times of a patient are fewer; the work intensity of oral doctors is reduced. The pulp capping and pulp retaining paste can be applied to the protection of tooth body dental pulp exposure positions.

A bone substitute composition includes glass flake and a hardenable material. The glass flake is a particle with an aspect ratio of, at least, 20:1 The preferred thickness of the glass flake is in the range from 200 to 1,000 nm and the average particle size is, preferably, from 20 to 60 μm.

A dental filling resin material and a preparation method thereof are provided. The material is made of the following components in parts by weight, 15 to 30 parts of polyvinyl chloride resin, 5 to 11parts of propylene glycol alginate, 6 to 10 parts of dodecylamine oxide, 15-18 parts of polyhydroxyethyl methacrylate, 10-15 parts of chitin, 2-5 part of fimbrin, 10-11 parts of chitosan fiber, 10-12parts of cystine diethyl ester, 5-6 part of anti-caries agent, 4-6 parts of nano silver powder, 5-7 parts of paeonol, 10-12 parts of antioxidant, 5-6 parts of nano filler, 2-3 parts of stabilizer and15-20 parts of double distilled water. The filling resin material has excellent surface hardness and good abrasion resistance, and is easy to be polished. An anti-caries agent is added into the filling resin material in the invention, which can effectively prevent dental caries; The dental filling resin of the invention is added with nano silver salt, which can effectively inhibit oral bacteria; The filling resin material does not contain heavy metals and is environmentally friendly; And the preparation method is simple and feasible.