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32 results about "Root apex" patented technology
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Root apex. The end of the root of a tooth. The anatomical landmark in the apical region is the apical foramen.
Methods of treatment of the dental pulp and filling root canals using water-based material
ActiveUS20110104644A1Stable barrierPromote growthAntibacterial agentsImpression capsWater basedCalcium silicate
Improved compositions comprising a mixture of particulate materials with water-based liquids containing water-soluble polymers and surfactants are provided. Examples of particulate powders include mixtures of calcium silicate, calcium aluminate, calcium sulfate, and hydroxyapatite. Examples of water-soluble polymers include polyvinyl alcohols, polyvinyl pyrrolidone, partially hydrolyzed polyvinyl acetates, polyacrylic acid, and polymethacrylic acid. Surfactants such as sodium dodecyl sulfate are added to the composition to interact with the polymeric materials. The compositions are particularly suitable for sealing and obturating dental root canals and root apices. The composition provides a stable barrier to bacterial and fluid leakage in the root canal system of a tooth. In addition, the compositions help promote the growth of new bone and tissue surrounding the root-tip area or dentin tissue that covers an injured or amputated pulp.
Owner:DENTSPLY SIRONA INC
Digital designing and manufacturing method for apical surgery guide plate
ActiveCN108618854AAccurate reconstructionEasy to controlNerve needlesBoring toolsRoot apexTarget tissue
The invention relates to a digital designing and manufacturing method for an apical surgery guide plate. The method comprises the steps that 1) intraoral soft and hard tissue data of a patient is acquired through oral CBCT scanning, and a CBCT model is reconstructed in a three-dimensional mode; 2) a three-dimensional digital image of the surface information of teeth and mucosas of the patient is acquired through intraoral 3D optical scanning; 3) the CBCT model is combined with a three-dimensional optical scanning model to accurately reconstruct a target tissue; 4) 3D model design is carried out on the apical surgery guide plate by applying reverse engineering software; and 5) the guide plate is manufactured according to a 3D apical surgery guide plate model through 3D printing. According to the method, the CBCT three-dimensional image and intraoral 3D scanning are combined, the cut length, angle and depth of a root apex and the range of the root apex lesion are accurately positioned through the computer-aided design, the apical surgery guide plate is manufactured through 3D printing, and therefore the surgery can be accurately controlled, the surgical risk can be reduced, in addition, the operation difficulty can be lowered to the maximum extent, and the operation efficiency can be improved.
Owner:PEKING UNIV SCHOOL OF STOMATOLOGY
Methods of treatment of the dental pulp and filling root canals using water-based material
ActiveUS8658712B2Stable barrierPromote growthAntibacterial agentsImpression capsCalcium silicateParticulates
Improved compositions comprising a mixture of particulate materials with water-based liquids containing water-soluble polymers and surfactants are provided. Examples of particulate powders include mixtures of calcium silicate, calcium aluminate, calcium sulfate, and hydroxyapatite. Examples of water-soluble polymers include polyvinyl alcohols, polyvinyl pyrrolidone, partially hydrolyzed polyvinyl acetates, polyacrylic acid, and polymethacrylic acid. Surfactants such as sodium dodecyl sulfate are added to the composition to interact with the polymeric materials. The compositions are particularly suitable for sealing and obturating dental root canals and root apices. The composition provides a stable barrier to bacterial and fluid leakage in the root canal system of a tooth. In addition, the compositions help promote the growth of new bone and tissue surrounding the root-tip area or dentin tissue that covers an injured or amputated pulp.
Owner:DENTSPLY SIRONA INC
Root apex position detection apparatus
Root apex position model data associated with electrical characteristic values between a measurement electrode and a mouth electrode in a state in which the distal end of the measurement electrode is located at a root apex position of a root canal is stored in a storage unit. A power supply applies measurement signals of 500 Hz and 2 kHz between the measurement electrode and the mouth electrode. Two different current values flowing between the measurement electrode and the mouth electrode are detected. These current values are compared with the root apex position mode data stored in the storage unit. If the root apex position data includes any data which coincides with the current values, it is detected that the distal end of the measurement electrode is located at the root apex position.
Owner:TOEI ELECTRIC
Method of detecting the position of a lateral canal extending from a root canal to a periodontal space, and detecting an opening direction of the lateral canal, apparatus for the same, and a computer readable storage medium storing program to have a computer execute the method
A method comprising: comparing each value of measured signals with a plurality of model tooth position measurement data groups, and storing the measured signal values and an indication value at the time when a fluctuation of the indication value which indicates a distance from a root apex position to a distal end of an electrode for position detection shows an apex in a convex shape, the indication value being indicated by a model tooth position measurement data group in a predetermined relationship; and comparing second-time measured signal values and an indication value with the stored first-time measured signal values and the stored indication value, respectively, if at least two of them correspond or fall within a predetermined error range, stopping the electrode and measuring a position of the distal end of the electrode.
Owner:TOEI ELECTRIC
Chinese medicinal decoction for treating toothache
The invention discloses a Chinese medicinal decoction for treating toothache. The Chinese medicinal decoction is prepared from the following bulk pharmaceuticals in parts by weight: 10-15 parts of coptis root, 25-35 parts of realgar, 7-12 parts of baikal skullcap root, 10-20 parts of clematis root, 10-15 parts of Chinese angelica, 10-15 parts of common anemarrhena, 7-13 parts of skunk bugbane, 15-25 parts of honeysuckle flower, 6-12 parts of medicinal cyathula root, 10-20 parts of paniculate swallowwort root, 3-8 parts of astragalus, 6-12 parts of dahurian angelica root, 6-12 parts of Chinese ligusticum rhizome and 6-12 parts of fried great burdock achene. The Chinese medicinal decoction disclosed by the invention can be used for treating toothache caused by oulonitis, root apex periarthritis, parodontopathy and the like. The Chinese medicinal decoction is taken orally twice every day, every time for about 10ml. One treatment course lasts for seven days; after one treatment course, pain is generally relieved remarkably; and after two treatment courses, pain disappears basically, and red and swollen gums disappear and are cured. After curing, the Chinese medicinal decoction can be taken continually for 1-3 treatment courses for consolidating the curative effect.
Owner:唐雯
Measuring Instrument System for Endodontic Length
Disclosed herein is an instrument for measuring an endodontic length, which measures and indicates the distance from a pointed tip of a cutting tool to a root apex in order to prevent the pointed tip of the cutting tool from going over the root apex when a root canal is perforated by the cutting tool for an endodontic treatment of a root canal of a tooth. The endodontic length measuring instrument is equipped inside a unit chair system installed in a consultation room of a dental clinic and allows a monitor mounted on the unit chair system to display a measurement result of the endodontic length, thereby making a medical treatment of a root canal easy, easily providing a measurement result of the endodontic length to a doctor, and displaying treatment and measurement results of the root canal in various and precise ways. The measuring instrument provides a scaled-up image of the remaining distance from the pointed tip of the cutting tool to the root apex when the pointed tip of the cutting tool reaches an area which demands a more precise measurement result, thereby increasing safety and accuracy in perforation of the root canal.
Owner:S DENTI
Hook type root apex locator
The invention relates to a hook type root apex locator which comprises a casing, a hook fixedly mounted at one end of the casing, a filing pin connected to the other end of the casing through a data line and a control panel disposed in the casing. The hook is suspended on the lip, the casing is directly suspended below the hook, and the surface of the casing is provided with a display mechanism for displaying the length of the root apex. The display mechanism, the hook and the filing pin are all electrically connected to the control panel. The hook of the root apex locator is fixedly disposedat one end of the casing. During operation, when the hook is hung on the lip, the casing is directly hung under the hook, that is, the chin of a patient, so that an operator can check data informationdisplayed by the display mechanism instantly during operation.
Owner:CHANGZHOU SIFARY MEDICAL TECH CO LTD
Method for culturing root apex of butterfly orchid sterile culture strain
InactiveCN106942062AReduce pollutionReduce harmPlant tissue cultureHorticulture methodsRoot apexPlant roots
The invention discloses a root tip tissue culture method of Phalaenopsis aseptic culture strain, which comprises the following steps: (1) cultivating Phalaenopsis aseptic strain with finely divided Chinese fir dander, cutting off the tips of aerial roots protruding from the flower pot as explant; (2) washing the root tip of the explant with washing powder, soaking it in alcohol, soaking it in sodium hydrochloride to sterilize it, and rinsing it with sterilized water at last; (3) washing the root tip of the explant Into the culture medium for tissue culture. The method adopts the root of the aseptic cultured strain as the explant, which can effectively reduce the pollution degree of the explant, reduce the damage to the mother plant, and promote the differentiation rate and proliferation rate of the root tip tissue culture. The invention can collect root ends in any season for tissue culture, and the explants can be collected without waiting for the Phalaenopsis to bloom.
Owner:JIANGSU POLYTECHNIC COLLEGE OF AGRI & FORESTRY
Root apex position detection method
Owner:TOEI ELECTRIC
Method for periodontal disease measurement
ActiveUS11045156B2Improve accuracyAccurate calculationDentistryComputerised tomographsRoot apexPeriodontal tissue
The method for periodontal disease measurement of the present invention includes: using a plurality of cross-sectional images provided by x-ray CT images of teeth and periodontal tissues to detect a contour of each tooth in each cross-sectional image, detect a dentition, and provide a dental formula; detecting the positions of the root apex, the alveolar crest, and the crown of each tooth from the detected tooth contour data; calculating at least one of a distance indicator, a volume indicator, a surface area indicator, a first moment indicator, a center-of-gravity indicator, and an alveolar bone indicator from the detected tooth contour data, and the position data of the root apex, the alveolar crest, and the crown of the tooth; and measuring the progression of periodontal disease based on at least one calculated indicator.
Owner:MEDEIA
Tissue activity promotion type pulp capping agent and preparation method thereof
InactiveCN107898647AInhibition of differentiationHigh activityImpression capsDentistry preparationsRoot apexWhole body
The invention relates to a tissue activity promotion type pulp capping agent and a preparation method thereof, and belongs to the technical field of pulp capping agents. Periploca forrestii Schltr isground and undergoes alcohol extraction, the obtained alcohol extract is collected and is concentrated, an ethyl acetate component is extracted from the Periploca forrestii Schltr, and the Periploca forrestii Schltr ethyl acetate part has strong osteoclast formation and bone resorption ability inhibition activity, and can improve the activity of cell tissues at the pulp capping position, so the tissue restoration condition is used is improved after the pulp capping agent. A pearl mother material is used as a powder main material, and the main components of the pearl mother powder main materialare calcium carbonate, organic matters and few trace elements, so the pulp capping agent is similar to human skeleton in chemical components and form structure, is nontoxic to local tissues or the whole body, has no rejection reaction, has good biocompatibility and bone affinity, can promote the restoration of root apex periphery tissues, guide the growth of alveolar bone cells and seal apical foramen, and has effectively improved restoration performance.
Owner:常州欧利莱照明有限公司
Positioning device for apical surgery and preparation method of positioning device
PendingCN111281577AReduce riskAccurate removalAdditive manufacturing apparatusManufacturing data aquisition/processingSurgical operationSurgical risk
The invention relates to the field of dental equipment, in particular to a positioning device for apical surgery and a preparation method of the positioning device. In order to reduce the risk of theapical surgery, improve the treatment quality and enable the long-term prognosis to develop well, the invention provides a positioning device for the apical surgery, which is characterized in that theperipheral side surface of a supporting plate is a convex arc surface; a positioning plate is located on the top face of the supporting plate and close to the peripheral side face of the supporting plate; a positioning through groove is formed in the positioning plate and is close to or located at the positioning end, away from the supporting plate, of the positioning plate; a positioning accessory is clamped in the positioning through groove; and a positioning guide through hole penetrating through the inner wall and the outer wall of the positioning accessory is formed in the positioning accessory. During use, the supporting plate is located between upper teeth and lower teeth of a patient, the positioning accessory is abutted against affected teeth, and the positioning guide through hole is located in the excision position of the root apex of the affected teeth. By using the positioning device for the apical surgery, the surgical risk can be reduced, the treatment quality can be improved, and long-term prognosis can be well developed.
Owner:上海市口腔病防治院
Preparation method for periodontal tissue repairing-type root apex filling material
InactiveCN108158828AEfficient fillingHigh mechanical strengthImpression capsDentistry preparationsRoot apexPhosphate
The invention relates to a preparation method for a periodontal tissue repairing-type root apex filling material and belongs to the technical field of filling materials. Bovine bone is calcined and then is compounded with tricalcium phosphate so that a base is prepared. Main fillers are hydroxyapatite and hydroxy acid calcium salt, are similar to hard tissue ingredients of the human body, can be effectively compatible with human tissues, have excellent mechanical strength in the human body and can effectively fill the root apex. The gel prepared from chitosan coats the osteogenic growth peptide and slowly releases the osteogenic growth peptide so that periodontal tissue regeneration is promoted. The chitosan gel can effectively promote the regeneration of periodontal tissues in the bifurcation area. Through the interaction between the chitosan gel and the filling material, the growth and development of periodontal tissues are promoted and the development of periodontal tissues is effectively repaired and promoted.
Owner:常州蓝旗亚纺织品有限公司
Gel Nail and Producing Method Thereof
Owner:APPL LACQUER IND INC
A digital design and manufacture method of apical surgical guide
Owner:PEKING UNIV SCHOOL OF STOMATOLOGY
Endodontics surgical stent
A hard tissue stent, including an access hole formed in one side, may be placed over one or more of the patient's teeth where the access hole is accurately aligned at a location for drilling to, for example, remove infection. A soft tissue stent may be placed over one or more of the patient's teeth, where the stent can include a mark to cut to create an access flap in the soft tissue. By keeping the flap attached, the surgeon can more easily return the flap to the proper position. The attached surgical guide permits access any area of the jaw and tooth and implanted device. With insertion of a sleeve with custom bores into the guide, the dental surgeon can work in a dry field and accurately manipulate the bony crypt and tooth for many different purposes including root-end preparation, filling and repair of local perforations and cracks.
Owner:CORNERSTONE SPECIALTY PROD LLC
Surgical device and methods of use
ActiveUS20200085553A1Accurate identificationEasily and accurately map desired structureSurgeryDiagnostic markersRoot apexSurgical site
A surgical device for identification of a surgical site of interest, such as a craniofacial or dental site (root apex of an identified tooth), and a method for using the device is provided. The device includes a perimeter bar and a plurality of intermediate cross bars arranged in a grid structure. The device can be used during a surgical procedure requiring enhanced precision, such as during an endodontic surgical procedure, by positioning the device next to a patient's tooth and capturing a CBCT image, the CBCT image being used to identify a drilling location. The device can be repositioned alongside the patient's tooth, and used to identify an accurate drilling position.
Owner:TEXAS A&M UNIVERSITY
Tooth arrangement device and tooth arrangement kit, as well as preparation method and application thereof
The invention provides a tooth arrangement device and a tooth arrangement kit, as well as a preparation method and application thereof. The tooth arrangement device comprises a tooth arrangement device body which is integrally molded, wherein the tooth arrangement device body comprises a lip side wall, a tongue side wall and a web, wherein an upper dental part of the lip side wall and an upper dental part of the tongue side wall protrude above the web, and form an upper dental groove with the web; a lower dental part of the lip side wall and a lower dental part of the tongue side wall protrudebelow the web, and form a lower dental groove with the web; the upper dental groove comprises an upper tooth insert arrangement part, and the lower dental groove comprises a lower tooth insert arrangement part; an acting force enabling tipping movement is generated by the upper tooth insert arrangement part and the lower tooth insert arrangement part, and the rotating center of tipping movement is the position of one third of the length of a dental root apex; and the upper tooth insert arrangement part and the lower tooth insert arrangement part are customized according to teeth of a user. The tooth arrangement device can be used before a user wears a serial transparent appliance, and a common insertion path of teeth can be obtained without changing several braces.
Owner:苏州博思美医疗科技有限公司
Sealbio: a novel non-obturation regenerative technique of endodontic treatment
InactiveUS9180072B2Reduce demand on time and technique sensitivity and cost of treatmentSimple treatmentImpression capsTeeth fillingEndodontic therapyRoot apex
This invention relates to a novel non-obturation, regenerative technique “SealBio” of endodontic treatment involving regenerative potential of stem cells and signaling molecules, locally available in the peri-radicular region of teeth, wherein they are stimulated to induce healing and deposition of a natural barrier (seal) at the root apex.
Owner:DEPT OF BIOTECHNOLOGY MINIST OF SCI & TECH GOVERNMENT OF INDIA +1
Method of detecting the position of a lateral canal extending from a root canal to a periodontal space, and detecting an opening direction of the lateral canal, apparatus for the same, and a computer readable storage medium storing program to have a computer execute the method
A method comprising: comparing each value of measured signals with a plurality of model tooth position measurement data groups, and storing the measured signal values and an indication value at the time when a fluctuation of the indication value which indicates a distance from a root apex position to a distal end of an electrode for position detection shows an apex in a convex shape, the indication value being indicated by a model tooth position measurement data group in a predetermined relationship; and comparing second-time measured signal values and an indication value with the stored first-time measured signal values and the stored indication value, respectively, if at least two of them correspond or fall within a predetermined error range, stopping the electrode and measuring a position of the distal end of the electrode.
Owner:TOEI ELECTRIC
A kind of root tip operation guide plate and manufacturing method thereof
ActiveCN112914757BStay healthySimple and fast operationAdditive manufacturing apparatusManufacturing data aquisition/processingRoot apexBone tissue
The present invention provides a guide plate for root apex surgery and a manufacturing method thereof. The guide plate for root tip surgery can simultaneously indicate the range of apex resection and soft tissue incision, and includes a tooth support part, a root cut guide plate part and an incision guide plate part. The tooth support part, The root cutting guide plate part and the incision guide plate part are detachably connected, and the tooth support part is respectively connected with the root cutting guide plate part and the incision guide plate part through the connection part. The digital apical surgery guide plate and production method provided by the present invention can accurately guide the position of the incision and the root cutting area at the same time, reducing surgical trauma; the detachable design can make the guide plate fit the bone tissue for precise guidance, It has application advantages especially when there are multiple anterior root apex operations or undercuts on the anterior root side.
Owner:PEKING UNIV SCHOOL OF STOMATOLOGY
Root apex filling material and preparation method thereof
The invention relates to a root apex filling material which comprises the following components in mass percent: 35%-44% of natural hydroxyapatite, 35%-44% of tetracaicium phosphate of which the particle size is 0-50mu m and the mean particle size is 2-8mu m, 7%-9% of polyacrylic acid of which the mean molecular weight is 30000-50000, 1.5%-2.5% of citric acid and 1.5%-2.5% of sodium citrate. The natural hydroxyapatite, the tetracaicium phosphate, the polyacrylic acid, the citric acid and the sodium citrate are mixed, ground and sieved by a 200-mesh sieve to form the root apex filling material.The preparation method comprises the following concrete steps of: mixing, grinding and sieving the natural hydroxyapatite, the tetracaicium phosphate, the polyacrylic acid, the citric acid and the sodium citrate by a 200-mesh sieve to obtain the root apex filling powder, preserving the root apex filling powder in a dry place for later use; using ionized water, polyethylene glycol (PEG) 400 or glycerol as a liquid phase, mixing the prepared powder with the liquid phase in a mass ratio of (4-5):1, and filling into a mold to prepare the root apex filling material.
Owner:SOUTHEAST UNIV
Method for producing a stator, and teeth stack for a stator
PendingCN109713855AEasy and/or quick assemblyIncrease freedomMagnetic circuit stationary partsManufacturing stator/rotor bodiesEngineeringPermanent magnet motor
The invention relates to a method for producing a stator and a teeth stack for a stator. A method of producing a stator of a synchronous permanent magnet machine includes: a step of providing a toothstack comprising a plurality of teeth, wherein the teeth are arranged in a radial direction, forming a tooth stack as a circular structure, each of the teeth comprising a root end in a radially outward direction of the tooth stack and an inner end in a radially inward direction of the tooth stack, each two adjacent teeth forming a gap therebetween, the inner ends of the adjacent teeth being interconnected by means of a bridge; and a step of providing at least one coil in at least one gap between adjacent teeth of the tooth stack. The method further comprises: a step of arranging the tooth stack within the yoke stack such that the root ends of the teeth are in mechanical contact with the yoke stack; and a step of removing at least a portion of the bridge portion at the inner end of the tooth such that the tooth stack has a predetermined diameter in the radially inward direction. The invention also relates to a stator, a tooth lamination and a synchronous permanent magnet motor with thestator.
Owner:ROBERT BOSCH GMBH
Surgical device and methods of use
ActiveUS11395723B2Accurate identificationEasily and accurately map desired structureSurgeryDiagnostic markersRoot apexSurgical site
A surgical device for identification of a surgical site of interest, such as a craniofacial or dental site (root apex of an identified tooth), and a method for using the device is provided. The device includes a perimeter bar and a plurality of intermediate cross bars arranged in a grid structure. The device can be used during a surgical procedure requiring enhanced precision, such as during an endodontic surgical procedure, by positioning the device next to a patient's tooth and capturing a CBCT image, the CBCT image being used to identify a drilling location. The device can be repositioned alongside the patient's tooth, and used to identify an accurate drilling position.
Owner:TEXAS A&M UNIVERSITY
Lateral branch detection device, lateral branch detection probe, lateral branch detection method, and program for same
Provided is a lateral branch detection probe 200 whereby the condition of a lateral branch can be detected merely by inserting the lateral branch detection probe 200 to a root apex. A lateral branch detection probe (200) detects, after insertion thereof into a root canal of a tooth, the presence / absence of a side branch and the position of the side branch in the root canal axial direction, the lateral branch detection probe (200) being provided with a plurality of measurement electrodes (220) extending to different positions in the root canal axial direction (Y) at predetermined intervals, themeasurement electrodes (220) each being covered by an insulator (223) except at one end part thereof, and the other end parts being a measurement terminal group (227) capable of connecting to a detection power source on a detection device side.
Owner:藤荣电气株式会社 +1
Root apex surgery guide plate and manufacturing method thereof
ActiveCN112914757AStay healthySimple and fast operationAdditive manufacturing apparatusManufacturing data aquisition/processingRoot apexBone tissue
The invention provides a root apex surgery guide plate and manufacturing method. The root apex surgery guide plate can simultaneously indicate a root apex excision range and a soft tissue incision, and comprises a tooth supporting part, a root cutting guide plate part and an incision guide plate part; the tooth supporting part, the root cutting guide plate part and the incision guide plate part are detachably connected; the tooth supporting part is connected with the root cutting guide plate part and the incision guide plate part through connecting parts. According to the digital root apex surgery guide plate and the manufacturing method, the position of the incision and the position of a root cutting region can be accurately guided at the same time, and a surgery wound is reduced; and by using a detachable design, the guide plate can be attached to bone tissue for accurate guiding; and the root apex surgery guide plate has application advantages especially when root apexes of multiple anterior teeth undergo surgery or anterior tooth roots have undercuts.
Owner:PEKING UNIV SCHOOL OF STOMATOLOGY
Diseased tooth model for simulating root canal barrier surgery in vitro as well as construction method and application of diseased tooth model
ActiveCN114299804ASave operating timeSimple structureCosmonautic condition simulationsIncreasing energy efficiency3d printRoot apex
Owner:SICHUAN UNIV
Low profile component tie
Owner:TYCO ELECTRONICS LOGISTICS AG (CH)
Method and apparatus for maintaining prefabricated dentures
ActiveCN105744910BSimple and cost-effective to provideClamp firmlyTooth crownsArtificial teethDenturesBiomedical engineering
The invention relates to a method for positioning and machining a dental prosthesis (1), comprising the following method steps: 1) at least two clamping jaws (4, 6) with circumferential grooves abutting one or more prefabricated dental prostheses (1) with the circumferential grooves placed in such a manner that, at least in some areas, the disposed jaws (4, 6) respectively surround the denture(s) (1) around the central circumference, wherein, at least in some areas, the inner surface of the groove forms a form-fitting Areas of the outer surface of the denture(s) (1) in which the clamping jaws (4, 6) rest against the denture(s)(1) in such a way that the coronal end(s)(3) of the denture(s)(1) ) and root ends (2) protrude on both sides of the closed jaws (4,6); 2) Fasten the jaws (4,6) together. The invention also relates to a kit for carrying out this method and a device for holding a denture (1).
Owner:HERAEUS KULZER
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