39 results about "Filled tooth" patented technology

The invention relates to a photo-curing composition for tooth, with belongs to the field of preparation for dentistry. The object of the invention is to solve the problem that the abrasion resistance and obdurability of photo-curing dentistry compound resin material for filling tooth cavity is needed to be improved urgently. The composition provided by the invention comprises the following components, in mass percentages, nano inorganic powder treated by surface modification with silicone hydride coupling agent 20-85%; resin monomer such as bisphenol A glycidyl methacrylate 8%-70%; fluidifying agent such as triethylene glycol dimethacrylate 5%-25%; photoinitiator such as camphorquinon 0.25%-2%; coinitiator such as 2-(dimethylamino)ethyl methacrylate 0.5%-3%; the main point of the invention is the nano inorganic powder contains flaky alumina granules 10-80 wt.% based on its own weight. Flaky alumina granule component in the composition provided by the invention contributes to improve abrasion resistance and obdurability of photo-curing material.

A bone repair material is described that is of putty-like consistency, particularly useful for repairing dental bony defects such as those caused by bone loss resulting from moderate or severe periodontitis, augmenting of bony defects of the alveolar ridge, filling tooth extraction sites, or sinus elevation grafting. The repair material includes a porous, resorbable particulate that is bone-derived or derived from bone-like hydroxyapatite or synthetic hydroxyapatite; and, a resorbable carrier, such as high molecular weight polysaccharides, such as hyaluronic acid. A high concentration of particulate in the putty enhances bone repair and requires a high concentration of carrier to retain the putty at the defect site. For a particulate density of about 1.2 g / cc such as PEPGEN P-15® Bone Graft, a preferred formulation comprises about 55% percent by weight of the putty suspended in a hyaluronic acid gel of about 1.4×106 daltons molecular weight and a final concentration of about 56 mg / cc which material adheres to a bony periodontal defect and does not excessively expand or migrate from the defect when held in place by a conventional flap closure.

The invention relates to a composition for tooth with abrasion resistance and obdurability, which belongs the field of preparation for medical application and dentistry. The object of the invention is to solve the problem that the abrasion resistance and obdurability of dentistry compound resin material for filling tooth cavity is needed to be improved urgently. The composition provided by the invention comprises the following components, in mass percentages, nano inorganic powder treated by surface modification with silicone hydride coupling agent 20-85%; resin monomer such as bisphenol A glycidyl methacrylate 8%-70%; fluidifying agent such as triethylene glycol dimethacrylate 5%-25%; photoinitiator such as camphorquinon 0.25%-2%; coinitiator such as 2-(dimethylamino)ethyl methacrylate 0.5%-3%. The main point of the invention is the nano inorganic powder contains flaky alumina granules 10-80 wt.% based on its own weight. Microsized flaky alumina granule component in the composition provided by the invention contributes to improve abrasion resistance and obdurability of material.

A bone repair material is described that is of putty-like consistency, particularly useful for repairing dental bony defects such as those caused by bone loss resulting from moderate or severe periodontitis, augmenting of bony defects of the alveolar ridge, filling tooth extraction sites, or sinus elevation grafting. The repair material includes a porous, resorbable particulate that is bone-derived or derived from bone-like hydroxyapatite or synthetic hydroxyapatite; and, a resorbable carrier, such as high molecular weight polysaccharides, such as hyaluronic acid. A high concentration of particulate in the putty enhances bone repair and requires a high concentration of carrier to retain the putty at the defect site. For a particulate density of about 1.2 g / cc such as PEPGEN P-15® Bone Graft, a preferred formulation comprises about 55% percent by weight of the putty suspended in a hyaluronic acid gel of about 1.4×106 daltons molecular weight and a final concentration of about 56 mg / cc which material adheres to a bony periodontal defect and does not excessively expand or migrate from the defect when held in place by a conventional flap closure.

The invention relates to a method for preparing dental fortified resin based on the principle of material hybridization modification, belonging to the field of medical and dental preparation. The wear-resisting property and the obdurability of the existing composite dental resin used for filling tooth cavities are in urgent need to be improved, and the invention aims at promoting the technological progress of the resin. The method includes the steps: carrying out the operation of surface modification to inorganic nano-sized powder under the utilization of silane coupling agent; uniformly mixing the modified inorganic nano-sized powder with monomer, such as bisphenol A methyl glycidyl acrylate, diluting agent, such as triethylene-glycol dimethacrylate, light trigger, such as camphorquinone, coinitiator, such as dimethylaminoethyl methacrylate, and other materials under photophobic conditions; and eliminating air bubbles under vacuum condition. The invention is characterized in that the interior of the inorganic nano-sized powder contains aluminium oxide nano rods which are 10 to 80 percent of the weight of the inorganic nano-sized powder. The aluminium oxide nano rods added inside contribute to the improvement of the wear-resisting property and the obdurability of the materials.

The invention discloses a tooth glue tip filler in tooth root canal, it consists of force application part, vessels and push bar part connecting the force application part, said vessels consists of shedding and guided groove through vessels, said push bar part consists of push bar equipped in guided groove and is relative to vessels sliding in guided groove. Apply external force on the force application part during the use process, the push bar moves relatively to vessel, the tooth glue inserting the guided groove from shedding is cut by push bar and fills into the 1 / 3 root canal of root tip to making the filled tooth glue tip is controlled in the required length range, it need not remove exposed tooth glue while blocks the tooth root tip hole to making the tooth root tip will not be filled over.

Air brick masonry device comprises a plurality of hole filling teeth, hole filling tooth connecting plates and a handle. A plurality of hole filling teeth are arranged at equal interval, the rear ends of the hole filling teeth are fixedly connected with the hole filling tooth connecting plates, the length of each hole filling tooth is larger than that of a hole of an air brick, the shape and size of each hole filling tooth corresponds to those of the hole of the air brick, and the hole filling tooth can be inserted into the corresponding hole of the air brick. The handle forms by vertically connecting a stand pipe and a hand shank, and the lower end of the stand pipe is connected with the middle part of the hole filling tooth connecting plate. The hole filling tooth, the hole filling tooth connecting plate and the hand shank are all hollow aluminum templates, so as to reduce the whole weight of the air brick masonry device substantially. The air brick masonry device of the invention is simple and convenient to use, and is easy to produce, and the masonry problem of coal gangue (shale) sintering air brick is solved. The invention can be used as a professional masonry tool for filling non-bearing wall for energy-saving construction of the coal gangue (shale) sintering air brick.

The present invention relates to a degradable filling composition for tooth extraction wounds and a preparation method and a use of the degradable filling composition. The degradable filling composition is characterized by comprising the following raw materials in parts by weight: 20-60 parts of calcium stearate, 10-40 parts of an alginic acid / chitosan compound, 5-30 parts of bioactive glass, 10-60 parts of tocopherol acetate and 0-30 parts of poloxamer. The preparation method comprises the following steps: mechanically and uniformly mixing the calcium stearate, alginic acid / chitosan compound,bioactive glass and poloxamer, then adding the tocopherol acetate, uniformly mixing the materials to form a muddy ash-shaped mixture, and shaping, packaging and sterilizing are conducted to obtain the degradable filling composition for the tooth extraction wounds. After tooth extraction, the composition is filled in the tooth extraction wounds to prevent complications of tooth extraction. The degradable filling composition for the tooth extraction wounds is a putty-shaped material which can be shaped and deformed at will, can be used for filling tooth extraction nests in any shapes, is also long in acting time, can also stabilize a hemostatic effect, and plays roles in repairing and inhibiting microorganisms at the same time.

The invention relates to a preparation method for dental fortified resin based on the principle of material hybridization modification, belonging to the field of medical and dental preparation. The wear-resisting property and the obdurability of the existing composite dental resin used for filling tooth cavities are in urgent need to be improved, and the invention aims at promoting the technological progress of the resin. The method includes the steps: carrying out the operation of surface modification to inorganic nano-sized powder under the utilization of silane coupling agent; uniformly mixing the modified inorganic nano-sized powder with monomer, such as bisphenol A methyl glycidyl acrylate, diluting agent, such as triethylene-glycol dimethacrylate, light trigger, such as camphorquinone, coinitiator, such as dimethylaminoethyl methacrylate, and other materials under photophobic conditions; and eliminating air bubbles under vacuum condition. The invention is characterized in that the interior of the inorganic nano-sized powder contains aluminium oxide nano rods which are 10 to 80 percent of the weight of the inorganic nano-sized powder. The aluminium oxide nano rods arranged inside contribute to the improvement of the wear-resisting property and the obdurability of the materials.

An electric toothbrush with water filling function features that its cylindrical brush with slightly conic front end is driven by motor to rotate for cleaning the surface of teeth and the gaps between teeth while the water is filled from water bag into brush via the water-filling hole under the action of pressure for flushing the dirt. Its advantages are high cleaning effect and no damage to gingiva.

The invention relates to a dental material preparation method utilizing osteoid nano particle for compound modification, belonging to the field of dentistry preparation. The invention aims at solving the problem that the current dental compound resin material used for filling tooth cavity needs to be further improved in wear-resisting property and toughness. The method of the invention includes: silane coupling agent is utilized for surface modification on nano inorganic powder, the modified nano inorganic powder is evenly mixed with materials of bisphenol A glycidyl methacrylate monomer, TEGDMA diluent, camphorquinone light trigger, dimethylamino ethyl methacrylate coinitator and the like under the condition of keeping out of the sun, and bubbles are excluded under vacuum. The key point of the invention lies in that the nano inorganic powder contains platy hydroxylapatite accounting for 10-80% of self weight percentage. The contained platy hydroxylapatite contributes to improving the wear-resisting property and the toughness of the material.

An application of cyclic carbonate as the initiator assistant of the photo-curable filling used for filling tooth is disclosed. Its advantages are low poison and high biocompatibility.

The invention discloses a device for heating and filling a tooth in a dental canal, which comprises a heating tip, a high-temperature resistant insulation sleeve, a low-impedance inner conductor, a low-impedance outer conductor, a cathode and an anode, wherein the heating tip is made of a high-temperature resistant heating material; the rear of the heating tip is connected with the low-impedance inner conductor and the low-impedance outer conductor which galvanize a high-frequency controllable current at the position of the heating tip, so that a resistor at the position of the heating tip generates a great amount of heat under the action of the current; a layer of high-temperature resistant insulation sleeve is arranged between the low-impedance inner conductor and the low-impedance outer conductor; the low-impedance inner conductor is connected with the anode, while the low-impedance outer conductor is connected with the cathode; and the diameter of the heating tip is 0.1 to 1mm. The temperature of a filling needle used by a process of the invention is easy to control, and the problem that a root tip and a branched canal cannot be completely filled in the canal filling and the problem that a cavity is formed in the canal filling are solved.

An application of cycloacetal as the initiator assistant of the photo-curable filling used for filling tooth is disclosed. Its advantages are low poison and high biocompatibility.

The invention discloses a preparation method of an antibacterial and wear-resistant material for filling teeth. The preparation method comprises the following steps: firstly, weighing various raw materials, grinding partial raw materials into fine powder which is 800-1200 meshes in grain size, and uniformly mixing the fine powder, so that a powder mixture is obtained; then, dissolving rest raw materials in double distilled water, and conducting magnetic stirring and uniform mixing, so that a solution is obtained; and adding the powder mixture to the solution, and conducting stirring until the mixture is formed as uniform cream, so that the antibacterial and wear-resistant material is prepared. According to the scheme, the wear resistance of the prepared antibacterial and wear-resistant material is improved by 180%, and the teeth, which are repaired with the use of the material, are firmer and are more durable. The antibacterial and wear-resistant material is simple and convenient to use, free from any toxic and side effects, safe and free from health risks; and the preparation method has the characteristics of being simple in process, easy to operate, high in yield, low in environmental pollution and the like.

The invention relates to a composition containing artificial bone component for filling tooth cavity, which belongs to the field of preparation for dentistry. The object of the invention is to solve the problem that the abrasion resistance and obdurability of dentistry compound resin material for filling tooth cavity is needed to be improved urgently. The composition provided by the invention comprises the following components, in mass percentages, nano inorganic powder treated by surface modification with silicone hydride coupling agent 20-85%; resin monomer such as bisphenol A glycidyl methacrylate 8%-70%; fluidifying agent such as triethylene glycol dimethacrylate 5%-25%; photoinitiator such as camphorquinon 0.25%-2%; coinitiator such as 2-(dimethylamino)ethyl methacrylate 0.5%-3%; the main point of the invention is the nano inorganic powder contains short stick shaped nano hydroxyapatite 10-80 wt.% based on its own weight. Short stick shaped nano hydroxyapatite in the composition provided by the invention contributes to improve abrasion resistance and obdurability of material.

The invention relates to a preparation method of a dental resin material based on the principle of inorganic and organic hybrid modification, belonging to the field of preparation in medicine and dentistry. The invention aims at solving the problem that the existing dental composite resin material used for filling tooth cavities is poor in wear resistance, strength and toughness. The method comprises the following steps of: utilizing a silane coupling agent to carry out surface modification on nano inorganic powder, evenly mixing the modified nano inorganic powder with the materials of relevant monomer, a diluting agent, a photoinitiator, a coinitiator and the like under the light resistant condition; and removing bubbles under vacuum condition. The key points of the invention are as follows: the nano inorganic powder contains sheet alumina particles accounting for 10 to 80 percent of self weight percentage; and the sheet width of the sheet alumina particles is between 0.3micron and 36.0micron and the ratio of the sheet width and the sheet thickness is between 3 and 40. The added sheet alumina particles are beneficial to improving wear resistance and toughness of the material.

The invention discloses an anti-ash-deposition brush for cleaning a runner wheel in a resistance-type online grain moisture meter. The anti-ash-deposition brush comprises a brush structure and a scraper, and the brush structure and the scraper are fixedly installed together through connecting bolts. The brush structure includes a brush holder and brushing hair, one end of the brushing hair is mounted on one surface of the brush holder, and a rectangular groove with openings on three surfaces is formed in the adjacent surface, on the mounting surface of the brushing hair, of a mounting seat. Afirst threaded hole is formed in the bottom surface of the rectangular groove, the two ends of one surface provided with the rectangular groove are provided with trapezoidal tables, and certain distances are reserved between the trapezoid tables and the rectangular groove to form a frame platform. The scraper includes a baffle, frame plates and arc-shaped plates, a second threaded hole is formed in the baffle, the frame plates which are arranged relatively parallel are installed on one end of the baffle, and the two frame plates are provided with the arc-shaped plates. According to the anti-ash-deposition brush for cleaning the runner wheel in a resistance-type online grain moisture meter, large-grain grains and powder grains adhered on the runner wheel can be removed in time, grain powderis prevented from filling tooth grooves on the runner wheel, and the working efficiency of the grain moisture meter and the accuracy of the measurement results are improved effectively.

The invention discloses a resin material for filling teeth. The resin material is prepared form the following components in percentage by mass: 20-30% of calcium hydroxyphosphate, 10-15% of polymethylacrylate, 5-10% of triethyl citrate, 5-10% of diethyldodecylphosphonate, 10-15% of calcium alginate, 2-8% of an antibacterial, 5-10% of an antioxidant, 1-3% of a stabilizer and 20-25% of double distilled water, and the sum of the mass percentages of the components is 100%. The invention further specifically discloses a preparation method of the resin material for filling the teeth. The prepared resin material for filling the teeth has good compressive strength and hardness, does not contain heavy metals, is environmentally friendly, has the simple and convenient preparation method, and is easy to popularize.