63 results about "Extracted tooth" patented technology

A dental prosthesis for periodontal integration is disclosed. Furthermore a customized dental prosthesis for osseointegration is disclosed having a first manufactured portion shaped to substantially conform to the three-dimensional surface of a root of a tooth to be replaced and a second manufactured portion shaped to substantially conform to the three-dimensional surface of a crown of a tooth to be replaced. Furthermore a customized manufactured splint is disclosed to position and fixate a tooth-shaped prosthesis. Furthermore a CAD / CAM based method of and a system for manufacturing a customized dental prosthesis replacing an extracted tooth is disclosed, where the extracted tooth is scanned regarding its three-dimensional shape and substantially copied using (a) an imaging system in-vitro like a 3D scanner or in-vivo like a cone beam CT system, (b) CNC machinery and (c) biocompatible material that is suitable to be integrated into the extraction socket and at least partially adopted by the existing tissue forming the socket.

The present invention relates to a polymeric implant, especially useful for dental medicine. More specifically, the present invention relates to a polymerizable device comprising an artificial tooth's root and an abutment anchored therein and to a kit comprising interalia the same. The present invention also relates to a method for implanting the implant in the alveolar bore of previously extracted tooth.

A dental prosthesis for periodontal integration is disclosed. Furthermore a customized dental prosthesis for osseointegration is disclosed having a first manufactured portion shaped to substantially conform to the three-dimensional surface of a root of a tooth to be replaced and a second manufactured portion shaped to substantially conform to the three-dimensional surface of a crown of a tooth to be replaced. Furthermore a customized manufactured splint is disclosed to position and fixate a tooth-shaped prosthesis. Furthermore a CAD / CAM based method of and a system for manufacturing a customized dental prosthesis replacing an extracted tooth is disclosed, where the extracted tooth is scanned regarding its three-dimensional shape and substantially copied using (a) an imaging system in-vitro like a 3D scanner or in-vivo like a cone beam CT system, (b) CNC machinery and (c) biocompatible material that is suitable to be integrated into the extraction socket and at least partially adopted by the existing tissue forming the socket.

A tooth implant is used to replace a front tooth which has been lost or extracted. The implant comprises an anchoring part which is provided with an outer thread and which is applied in a recess formed in the jaw bone at the site of the lost or extracted tooth, a spacer sleeve part intended to extend through the gum of the jaw bone, and a prepared or preparable part which adjoins the spacer sleeve part and is intended to support a dental crown, for example. The anchoring part, the spacer sleeve part and the prepared or preparable part are arranged in one piece, the configuration and direction of the prepared or preparable part being substantially adapted or adaptable to the anatomy of the lost or extracted tooth, for example to the inner arc-shaped surface, and to the direction of said tooth. The one-piece implant affords a rapid and less traumatic replacement function compared to previously used three-part bridges.

Methods and apparatus for recovering dental pulp from dentition of a donor are disclosed, wherein the pulp from within extracted teeth utilizing such methods and apparatus is harvested, while preserving a sterile environment and avoiding trauma and infection, and stem cells, dendritic cells, and other cells isolating from the pulp, and the various cells propagated and expanded for subsequent use in repair or regeneration of tissues of the body, for therapeutic treatments, and other medical purposes.

A personal identification method using a digital image of teeth of a person to be identified including constructing a database by storing teeth images from a plurality of persons and at least one corresponding teeth characteristic element of each person; determining a position of an interline between an upper teeth portion and a lower teeth portion from an inner mouth area that is separated from a teeth image of the person to be identified, and isolating an upper teeth area and a lower teeth area based on the position of the interline; identifying one or more teeth characteristic elements from the upper and lower teeth areas; and searching the database based on the identified one or more teeth characteristic elements and determining identification pass or fail according to a similarity between the teeth image of the person to be identified and a teeth image retrieved from the database.

An improved apparatus for dental implant treatment includes a syringe comprising a barrel portion including a slightly bended cylinder in the area of the syringing side of the barrel and comprising a perpendicularly extended rim at its another side. Also, the improved apparatus for dental implant treatment comprises a piston member rigidly connected to the connecting rod at the syringing side and handle member extended from the connecting rod's another side. The connecting rod at the handle side portion includes the threaded portion with the outer thread appropriate to the inner thread of the controlling means of the adjustment means. The improved apparatus for dental implant treatment also includes the cover coupled with the syringing side of the barrel and a separate pipette providing suction of the patient's blood from the extracted tooth socket and injecting such blood into synthetic bone graft material located in the barrel.

Methods and apparatus for recovering dental pulp from dentition of a donor are disclosed, wherein the pulp from within extracted teeth utilizing such methods and apparatus is harvested, while preserving a sterile environment and avoiding trauma and infection, and stem cells, dendritic cells, and other cells isolating from the pulp, and the various cells propagated and expanded for subsequent use in repair or regeneration of tissues of the body, for therapeutic treatments, and other medical purposes.

A dental wrench device to loosen and extract teeth, comprising a handle with a fixed tapered jaw. A moveable jaw is also coupled to the handle. The tapered jaw is positioned along the root of a tooth selected to be extracted. The moveable jaw has a blunt contoured shape configured to grasp the gum and bone on the opposite side of the selected tooth at a level below the crown of the tooth. The device is applied and tightened around the selected tooth by turning a thumbscrew, or other jaw movement interface, that moves the moveable jaw end closer to the fixed tapered jaw end until the tooth is tightly gripped by the device. Once the wrench is locked into position, force may then be applied to extract the tooth. The device may also incorporate an optional force feedback gauge to warn the operator when excessive force is being applied.

A method for constructing a panorama of teeth arch with elements of interest emphasized, comprising the steps of: extracting a teeth arch from a volumetric image; unfolding the extracted teeth arch into a panoramic ribbon; assigning weighted priorities to at least two points in the panoramic ribbon, wherein priorities are weighted higher for points inside or proximal to elements of interest and applying a weighted summation in a direction perpendicular to teeth arch resulting in the panorama with elements of interest emphasized.

Method and kit for producing implant drilling guides positioned at the proper orientation to avoid inadvertent damage to critical regions of the patient's jaw when drilling to place dental implant screws. The method works by placing a small post device with x-ray visible depth markers in the root socket of the patient's tooth immediately after tooth extraction. The post device may additionally be configured to guide the drill at a position and angle that is different from that of the original tooth socket. This post device is used to construct a removable guide that anchors to the patient's adjacent teeth, and preserves the location and orientation of the extracted tooth root. Once the root socket is filled in with new bone, the guide, in conjunction with the X-ray post depth information, can be used to direct drilling along the same route as the old tooth root, thus avoiding critical structures.

The invention relates to an orthodontic accessory planning method for extracting features based on an oral voxel model. The method comprises the following steps: for input three-dimensional tooth point cloud data, extracting tooth point cloud global features through a feature extraction module by using a deep neural network architecture, obtaining category information of attachments on each tooththrough a multi-label classification module, and training through two modes of independent training and packaging training; and inputting actually obtained three-dimensional tooth point cloud data byusing the trained deep neural network structure, and giving category information corresponding to appliance accessories needing to be bonded by individuals. The orthodontic accessory planning strategysuitable for the individual can be obtained according to the tooth characteristics, the implementation process is easy and convenient to operate, the deployment cost is low, an effective reference basis is provided for a doctor to plan a diagnosis and treatment scheme and design an appliance, and therefore the working efficiency of the doctor is improved, and the accessory selection accuracy is improved.

The invention relates to a customized dental implant, and a preparation method thereof. The preparation method comprises following steps: 1, it is determined whether an autogenous extracted tooth dental crown is prepared; 2, an oral cavity optical digital impression is obtained; 3, a routine post-core root canal tooth is prepared; 4, if the bone mineral density data detected in step 1 is relatively high, and an extracted tooth is preserved, an integrated post-core and the autogenous extracted tooth dental crown are prepared, and a post-core three dimensional design matching the autogenous extracted tooth dental crown is formed; 5, if the bone mineral density data detected in step 1 is relatively high, and the extracted tooth preservation is qualified, an integrated post-core provided witha dental crown is prepared; 6, numerically controlled machining is adopted to prepare the customized integrated post-core; and 7, the prepared integrated post-core, or the integrated post-core and theautogenous extracted tooth dental crown are implanted into a prepared root canal using a binder. The preparation method is capable of realizing effective utilization of autogenous extracted teeth, and improving tooth implantation experience greatly.

The invention discloses a dental caries image processing method based on extracted tooth CBCT. The method includes the steps that granular noise filtering is carried out on an original tooth CBCT gray image for performing two-dimensional reconstruction on the extracted tooth CBCT; according to the filtered original tooth CBCT gray image, a background air brightness average gray value of the image in an air area is determined; by means of a human interaction region of interest and according to test recognition requirements, the edge of the region of interest, to be observed, of an enamel or dentin region of a tooth surface is selected; according to the background air brightness average gray value, a demineralization parameter of dental caries lesion in the gray image is calculated; by comparing the background air brightness average gray value in the original tooth CBCT gray image and the demineralization parameter with a preset threshold, dental caries flecks on a tooth are determined. By means of the technical scheme, detection and positioning of CBCT image caries can be achieved, and diagnosis accuracy of the dental caries in the CBCT image can be improved.

The BioRoot® anatomic endosseous dental implant begins as a block of yttria-stabilized, zirconia oxide (MOL3% Y3ZrO2) that is milled and processed into a single piece dental implant with a custom built abutment to which a dental prosthesis can be attached after a three to four month osseointegration period, with unique retention devices that can be round, ovoid, or oblong-shaped, of any size desired with a varied number of holes (See Drawings FIGS. 1, 1 and 2, FIGS. 2, 1 and 2, and FIGS. 3, 1 and 2) which through the osseointegration process will become anchors between the implant surface and the alveolar walls of the extracted tooth root socket that minimize bone resorption, increase bone-to-implant contact, increase initial implant stability and enhance overall osseointegration.

The present invention relates to a processing method for bone graft material using teeth by separating an extracted tooth by region and processing the extracted tooth to allow regional powders to be independently used or mixed depending on a use such as grafting or enhancement of alveolar bone, and a bone graft material processed thereby. The processing method for bone graft material comprises the following steps: (a) cutting a tooth extracted from a patient at the boundary between the crown of a tooth and the root of a tooth,(b) removing the missing region of the horizontally cut crown of a tooth, soft tissue and pulp tissue,(c) quick-freezing the tissue of the crown of a tooth and pulverizing the same to prepare a powder having an average diameter of 200-1,500 [mu]m,(d) degreasing the powder,(e) dehydrating the powder,and (f) carrying out a post-process including at least a sterilization with respect to the degreased and dehydrated powder to prepare a bone graft material.

The purpose of the invention is to alleviate the discomfort caused by the large wound when the impacted tooth is extracted, and provided are a guide plate for precise tooth extraction, a manufacturingmethod of the guide plate and a use method of the guide plate. The guide plate is composed of a tooth extraction site positioning part and a guide plate fixing part, The shape of the fixing part of the guide plate is fitted to the non-extracted teeth or oral mucosa or alveolar bone, and the guide plate is fixed in the oral cavity. The fixing part of the guide plate is fixed to the non-extracted teeth or oral mucosa or alveolar bone. The fixed part of guide plate can fix the guide plate in the oral cavity, and the position of impacted tooth to be extracted can be determined by the extraction positioning hole, which can greatly reduce the size of wound, alleviate the discomfort of patients after extraction, and accelerate the wound healing.

The present invention relates to a processing method for bone graft material using teeth by separating an extracted tooth by region and processing the extracted tooth to allow regional powders to be independently used or mixed depending on a use such as graft material comprises the following steps: (a) cutting a tooth extracted from a patient at the boundary between the dental crown and the dental root of the tooth; (b) removing the missing region of the horizontally cut dental crown of a tooth, soft tissue and pulp tissue; (c) quick-freezing the tissue of the dental crown and pulverizing the same to prepare a powder having an average diameter of 200-1,500 μm; (d) degreasing the powder; (e) dehydrating the powder; and (f) carrying out a post-process including at least a sterilization with respect to the degreased and dehydrated powder to prepare a bone graft material.

A method and kit for producing implant drilling guides positioned at the proper angle and orientation so as to avoid inadvertent damage to critical regions of the patient's jaw when drilling to place dental implant screws. The method works by placing a small post with x-ray visible depth markers in the root of the patient's tooth immediately after tooth extraction. This post, along with guideblocks, optional washers, reduction or expansion guides, and rapidly hardening guide materials (such as acrylics or thermosetting materials) is used to construct a removable guide that anchors to the patient's adjacent teeth, and preserves the location and orientation of the extracted tooth root. Once the root is filled in with new bone, the guide, in conjunction with the X-ray post depth information, can be used to direct drilling along the same route as the old tooth root, thus avoiding critical structures.

A multi-dimensional mechanical information measurement device for evaluation of root canal shaping ability comprises a three-dimensional displacement control device, a three-dimensional deflection control device, a six-dimensional force measurement device and an extracted tooth fixing device, wherein the three-dimensional displacement control device comprises an X-axis sliding block, a Z-axis sliding block, a Y-axis mounting base and a Y-axis sliding block, the Y-axis mounting base is fixed on the Z-axis sliding block, and the Y-axis sliding block can slide along the Y-axis mounting base; the three-dimensional deflection control device sequentially comprises a force sensor connector, an X-axis rotary steering engine, an Z-axis angle deflection adjustment steering engine and a Y-axis angle deflection adjustment steering engine in the axial direction of the X axis; the six-dimensional force measurement device sequentially comprises a root canal file and a six-dimensional force sensor fixed on the root canal file in the axial direction of the X axis, and the six-dimensional force sensor is fixedly connected with the force sensor connector; the extracted tooth fixing device comprises an extracted tooth fixedly arranged on the Y-axis sliding block, and the extracted tooth can be matched with the root canal file. The device can simulate root canal preparation operation and acquire multi-dimensional mechanical information in real time.

Methods of extracting teeth involving contacting, prior to extraction, the tissue surrounding a tooth to be extracted with a composition providing an agent capable of destroying the periodontal ligament surrounding the tooth, such as, collagenase.

The invention provides apparatus and processes for non-load bearing endosteal implants and specifically to an implant tack for mitigating effects of bone resorption and atrophy due to lost or extracted teeth in the maxilla and / or mandible.

A dental trap is provided for use in a mouth cavity of a patient during a dental procedure. The dental trap may separate the patient's mouth cavity from the patient's throat to prevent an extracted tooth and / or a dental tool, such as a screw, in the mouth cavity from falling into the throat. The dental trap may also allow the patient to breathe through the dental trap.

The invention discloses an auxiliary instrument for extracting teeth and relates to an auxiliary device for extracting teeth. The device comprises a base and spherical hinges with clamping seats, wherein a rotary connection rod a and a rotary connection rod b are arranged on two sides of the upper end of the base respectively; each of the rotary connection rod a and the rotary connection rod b comprises a vertical rod and a horizontal rod; the upper ends of the vertical rods are vertically connected to the horizontal rods; the vertical rods of the rotary connection rod a and the rotary connection rod b are connected to the base via the spherical hinges with the clamping seats respectively; the rotary connection rod a and the rotary connection rod b are capable of rotating up, down, left and right on the spherical hinges with the clamping seats; a support frame is arranged at one end of the horizontal rod of the rotary connection rod a or the rotary connection rod b; an arc-shaped plate is arranged at the upper end of the support frame; vertical plates are arranged on two sides of the upper end of the base respectively and are located at the inner sides of the rotary connection rod a and the rotary connection rod b; a gap between the vertical plates on two sides corresponds to the width of a dental operating table pillow; a plurality of threaded holes corresponding to a dental operating table are formed in each vertical plate. The auxiliary device for extracting teeth is capable of reducing artificial waggle and improving the tooth-extracting stability.

Systems and methods are disclosed for forming a pontic in a pontic-housing pocket of one or more polymeric shell appliances having teeth-receiving cavities. Cavities in the polymeric shell appliances corresponding to the location of a missing or extracted tooth may include a pontic-housing pocket. The pocket may be filled with a composite resin or acrylic material that hardens and presents with a similar visual appearance to a tooth, thereby presenting the illusion that there is no missing tooth. The pontic-hardening pocket may have a single opening of sufficient size for receiving a syringe for injecting the pontic material. After the material hardens and the pontic is formed, it is locked into the pocket, as it cannot fit through the single opening. As the space of a missing tooth is widened or narrowed by the alignment treatment, successive shell appliances may have pontics of successively larger or smaller size.

[Problems] To provide a means and method for providing a pulverized extracted tooth product without causing the extracted teeth to lose their original properties. To provide a new material, originated from the pulverized extracted tooth product and imbued with new properties suited to the regeneration and the like of the alveolar bone.[Solving Means] A method for preparing a pulverized product of extracted tooth, comprising the pulverizing of extracted tooth with a pulverizing apparatus to obtain a pulverized product of an extracted tooth. The pulverizing apparatus comprises a sealable pulverizing chamber and freely rotating pulverizing blade within said pulverizing chamber, and the extracted tooth are pulverized by said pulverizing apparatus together with pieces of physiological saline ice. A method of preparing a demineralized powder originated from an extracted tooth by means of an acid treatment of the pulverized product of extracted tooth obtained by the above method to obtain a demineralized powder. A method of preparing a composite of demineralized powder and apatite by coating the demineralized powder obtained by the above method.