34 results about "Tooth neck" patented technology

A stator assembly adapted for use in an external rotor electric motor. The assembly includes a stator core having a hub, a plurality of teeth extending radially outward from the hub, a root tooth diameter and an outer diameter. Each tooth has a root, a neck extending from the root and a head opposite the root. The neck has a maximum width. Each adjacent pair of teeth has a pitch measured at the roots of the corresponding teeth. The assembly includes a winding wrapped around each tooth of at least three teeth of the stator core. A ratio of the root tooth diameter of the stator core to the outer diameter of the stator core is less than about 0.75. A ratio of the maximum tooth neck width to the tooth pitch measured at the root of the teeth is greater than about 0.36.

The invention provides a 3D (three-dimensional) printing bionic dental implant and a manufacturing method thereof and belongs to the field of dental implants. Easy loosing and falling of an implant caused by relatively large difference between the elasticity modulus of the implant and the elasticity modulus of sclerotin can be avoided by the dental implant, the biological activity is relatively strong, and bone healing time can be greatly shortened. The 3D printing bionic dental implant comprises an implant body and also comprises a chitosan nanometer coating which is combined with the outer surface of the implant body into a whole. The implant body comprises a tooth neck base station and a tooth root which is positioned below the tooth neck base station and is integrally connected with the tooth neck base station, wherein the tooth root is of an all-layer three-dimensional network structure. The 3D printing bionic dental implant provided by the invention can be applied to immediate implantation of the dental implant.

The invention relates to a method for producing a dental prosthetic shaped part, such as a partial or total prosthesis, which is produced in multiple layers from a generatively produced solid-body model of at least one prosthetic tooth or one prosthetic dental arch, wherein the prosthetic teeth have, on the inner face of the tooth neck, a lumen into which a dentine-coloured, polymerizable composition is introduced. This composition is then polymerized in at least one step. The at least one prosthetic tooth with dentine-coloured composition is arranged with its cervical side on the tooth-side surface of the prosthesis base and pressed together. Thereafter, the partial or total prosthesis obtained is completely cured in a light-curing appliance. The invention likewise relates to the prosthetic shaped parts that are obtainable by the method according to the invention.

The invention discloses a design method and system of an individual healing abutment. The method comprises the following steps: establishing an oral 3D model by acquiring data of teeth and gums on various tooth positions of a plurality of patients, and saving the oral 3D model in a database; according to the oral 3D model in the database, acquiring the shapes and the sizes of tooth roots and tooth necks on the various tooth positions as well as the shapes and the sizes of junction surfaces of the tooth necks and the gums; and according to the shapes and the sizes of the tooth roots and the tooth necks on the various tooth positions as well as the shapes and the sizes of the junction surfaces of the tooth necks and the gums, determining the shape and the size of the bottom of a healing abutment corresponding to the various tooth positions, so that the shape and the size of the base of the healing abutment are identical to the shapes and the sizes of the junction surfaces of the tooth necks and the gums. By virtue of the healing abutment, tissue cuffs formed by the gums, same with that before tooth extraction, can be well matched with a prosthesis which is implanted in a later period, so that the abutment is in smooth transition with the prosthesis, and the problems of black triangle and stress on the abutment are avoided.

A stator assembly adapted for use in an external rotor electric motor. The assembly includes a stator core having a hub, a plurality of teeth extending radially outward from the hub, a root tooth diameter and an outer diameter. Each tooth has a root, a neck extending from the root and a head opposite the root. The neck has a maximum width. Each adjacent pair of teeth has a pitch measured at the roots of the corresponding teeth. The assembly includes a winding wrapped around each tooth of at least three teeth of the stator core. A ratio of the root tooth diameter of the stator core to the outer diameter of the stator core is less than about 0.75. A ratio of the maximum tooth neck width to the tooth pitch measured at the root of the teeth is greater than about 0.36.

The invention provides a composite material as well as a preparation method and application thereof. The preparation method comprises the steps that phenolic hydroxyl of tannic acid, an amido bond ofsilk fibroin and an amido bond of 8DSS are combined to form hydrogen bonds, a composite material is synthesized, and 8DSS comprises an aspartic acid-serine-serine polypeptide sequence of eight repetitive sequences. According to the present invention, a wet adhesion material is adopted as a carrier, the bionic remineralization function is provided for the material, the material can be adhered to aneck tooth tissue in the wet environment, the strong interface bonding force can be maintained, the influence of saliva and gingival crevicular fluid can be resisted, and the remineralization can be continuously promoted so as to achieve the purposes of prevention, termination and repair of tooth neck lesions.

The invention relates to a tooth cleaning method. The first step is to remove calculus, plaque and hard objects on the gingiva and neck of the teeth; the second step is to remove superficial periodontal calculus and plaque; the third step is to remove deep teeth. Peripheral calculi; Step 4: Polish the tooth surface for the first time after tooth cleaning, to initially smooth the tiny pits on the tooth surface that may be caused by the first three steps of tooth cleaning, and at the same time remove the teeth that cannot be removed by the first three steps of tooth cleaning Subtle remaining spots; Step 5: Carry out a second polishing on the tooth surface after the first polishing, to ensure that the tooth surface is smooth and smooth; thereby using the tooth cleaning method of the present invention to clean teeth can not only clean thoroughly Teeth, while achieving smoothing and polishing of the tooth surface. The tooth cleaning method of the present invention uses a personal tooth cleaning kit to clean teeth, which is safer and more hygienic, and effectively avoids the problem of cross infection of patients.

The invention relates to a tooth cleaning suit which comprises a working tip unit, a polishing unit and a fixing frame unit, wherein the working tip unit comprises a tooth cleaning working tip for gum, a tooth cleaning working tip for shallow periodontal parts and a tooth cleaning working tip for deep periodontal parts; the polishing unit comprises a polishing brush for polishing tooth surfaces as well as a polishing cup; and the fixing frame unit comprises a fixing plate positioned at the upper layer and a support plate positioned at the lower layer. When the tooth cleaning suit is used, firstly the tooth cleaning working tip for gum is used for removing calculus on the gum and tooth neck, dental plaque and cusp hard matters; then the tooth cleaning working tip for the shallow periodontal parts is used for removing calculus and dental plaque on the shallow periodontal parts; the tooth cleaning working tip for the deep periodontal parts is used for removing calculus on the deep periodontal parts; and then the polishing brush is used for preliminarily polishing the cleaned tooth surfaces, and the polishing cup is used for finely polishing the cleaned tooth surfaces, thereby ensuring that the tooth surfaces are flat and smooth. The tooth cleaning suit provided by the invention can be used as a personal exclusive tooth cleaning suit, is further safe and sanitary, and is capable of thoroughly cleaning teeth while flattening and polishing the tooth surfaces.

The invention discloses a method for establishing a mouse periodontal disease model. The method comprises the following steps of (1) performing anaesthesia on the abdomen of a mouse to be subjected to model establishing, and fixing the mouse on a mouse table in a lying manner; (2) cushioning the head of the mouse, enabling the mouse to stably open the mouth with a mouth gag to expose a mandibular molar region, then cleaning a mandibular molar and cheek and tongue side gum with physiological saline, and sufficiently drying a surgery region with a dry cotton ball; (3) inlaying suture lines into a position under the contact point of adjacent surfaces of a first molar and a second molar of the left-side lower jaw with microscopic needle forceps, and after inlaying the suture line is guaranteed, tying a knot at the position of the mesial tooth neck part of the first molar of the lower jaw; and (4) inspecting the stability degree of the knotted suture lines, and after the stability degree is confirmed, completing establishing of the periodontal disease model. According to the method disclosed by the invention, the method for establishing a novel mouse periodontitis model is realized based on the first molar of the lower jaw. The imageology analysis result on local tissue of established mouse model certificates that by the method, the mouse periodontitis model can be successfully established, and the pathology process of a clinical periodontal disease is fully simulated.

The invention relates to a manufacturing method of a comfortable full-mouth adsorption false tooth meeting an aesthetic function, and belongs to the field of false tooth manufacturing, wherein the method comprises the steps: drawing a central line, a mouth angle line and a lip base line on a temporary base plate loaded with a wax rim after occlusion mouth testing, and taking a bisector of jaw spacing after mouth testing; marking out an incision edge connecting line of the anterior incisor below the lip base line, and marking out a smile line above the lip base line; connecting the incisor edge line of the anterior incisor with the bisector of the jaw spacing after mouth testing to form a tooth arrangement plane curve on the same plane, wherein the mouth angle line is a positioning line between a three-tooth distal center and a four-tooth proximal center, the curve length from the mouth angle line to the central line is the basis for determining the width specification of the whole set of false tooth, the smile line is a base line for determining the tooth neck of the anterior incisor, and the distance from the smile line to the incisor edge connecting line of the anterior incisor is the basis for determining the height specification of the whole set of false tooth. Therefore, specification parameters of the whole set of false teeth and tooth arrangement positions of the false teeth can be determined, and the method is simple and easy to implement and has aesthetic characteristics on the premise of meeting false tooth functions.

An artificial tooth 30 to be polished is fixed at a tooth neck 32 side and rotated about a tooth axis 33. Abrasives, preferably elastic abrasives formed by kneading abrasive grains into or supporting abrasive grains on an elastic material, are ejected together with a compressed gas at an ejection pressure of from 0.1 MPa to 0.5 MPa onto an occlusal portion 31 side of the artificial tooth 30 while the artificial tooth 30 is being rotated. The abrasives are ejected at an inclination angle θ with respect to the tooth axis 33 of the artificial tooth 30 of from 0° to 90°, and preferably from 15° to 75°. Portions on the occlusal portion 31 and side surfaces 38 of the artificial tooth 30 are thereby polished at the same time by the abrasive sliding over these portions.

A saw blade (4) for a machine operating with adjacent saw teeth traveling in two opposite and parallel directions comprises a blade substrate, teeth (16), and tooth necks (30) formed at the periphery of the substrate for holding the teeth (16) in place. Each tooth neck (30) has a protection surface (34), which is located in a plane that is parallel to the plane of the blade substrate (8), for protecting the tooth (16) against impact with any part of said adjacent saw blade. Each tooth (16) is located on the respective neck (30) in such a way that the tooth (16) is displaced from the protection surface (34) and from the adjacent saw blade in a direction normal to the plane of the protection surface (34).

The invention discloses a design method and system of an individual healing abutment. The method comprises the following steps: establishing an oral 3D model by acquiring data of teeth and gums on various tooth positions of a plurality of patients, and saving the oral 3D model in a database; according to the oral 3D model in the database, acquiring the shapes and the sizes of tooth roots and tooth necks on the various tooth positions as well as the shapes and the sizes of junction surfaces of the tooth necks and the gums; and according to the shapes and the sizes of the tooth roots and the tooth necks on the various tooth positions as well as the shapes and the sizes of the junction surfaces of the tooth necks and the gums, determining the shape and the size of the bottom of a healing abutment corresponding to the various tooth positions, so that the shape and the size of the base of the healing abutment are identical to the shapes and the sizes of the junction surfaces of the tooth necks and the gums. By virtue of the healing abutment, tissue cuffs formed by the gums, same with that before tooth extraction, can be well matched with a prosthesis which is implanted in a later period, so that the abutment is in smooth transition with the prosthesis, and the problems of black triangle and stress on the abutment are avoided.

The invention discloses a healing scanning body with a biological anatomical structure and a preparation process of the healing scanning body, belongs to the technical field of dental implants, and mainly solves the technical problems that an existing implant abutment cannot be completely consistent with a natural tooth neck in shape, food impaction and gingival inflammation infection are easily caused, the workload of a doctor is large and a patient needs to bear more pains. According to the technical scheme, the healing scanning body with the biological anatomical structure comprises a scanning body part, a gum penetrating part and a connecting interface part which are sequentially arranged from top to bottom; the appearance feature of the a scanning body part is preset in a background database according to actual scanning requirements; the gum penetrating part structure is consistent with a gum penetrating outline part of a tooth neck form of a tooth position needing implantation; and the shape of the connecting interface is matched with that of a target implant structure. The healing scanning body has the advantages of wide application range, reasonable structural design, simple process, easiness in operation and the like.

The invention is concerned with a kind of mouth equipment to cure blocking sleeping and breathing pause and low aerating syndrome for adjusting by sufferer. It solves the problem that the upper and down jaws cannot move freely, the best position of mandible cannot adjust by sufferer and the swallow and language can be influenced of existing equipment. The upper and down jaws holds are made according to the tooth of each sufferer, and set a draught button on the triangle clearance among the upper jaw hold, side incisor and incisor, and tooth neck part. Set a draught button on the triangle clearance among the down jaw hold, the first molar and the second molar, and tooth neck part. The draught buttons of upper and down jaw hold are on the opposite direction to each other, and they connect with each other by spring draught equipment. This invention is comfortable for sufferer to increase the cure of OSAHS.

An artificial tooth 30 to be polished is fixed at a tooth neck 32 side and rotated about a tooth axis 33. Abrasives, preferably elastic abrasives formed by kneading abrasive grains into or supporting abrasive grains on an elastic material, are ejected together with a compressed gas at an ejection pressure of from 0.1 MPa to 0.5 MPa onto an occlusal portion 31 side of the artificial tooth 30 while the artificial tooth 30 is being rotated. The abrasives are ejected at an inclination angle θ with respect to the tooth axis 33 of the artificial tooth 30 of from 0° to 90°, and preferably from 15° to 75°. Portions on the occlusal portion 31 and side surfaces 38 of the artificial tooth 30 are thereby polished at the same time by the abrasive sliding over these portions.

The invention is concerned with a kind of mouth equipment to cure blocking sleeping and breathing pause and low aerating syndrome for adjusting by sufferer. It solves the problem that the upper and down jaws cannot move freely, the best position of mandible cannot adjust by sufferer and the swallow and language can be influenced of existing equipment. The upper and down jaws holds are made according to the tooth of each sufferer, and set a draught button on the triangle clearance among the upper jaw hold, side incisor and incisor, and tooth neck part. Set a draught button on the triangle clearance among the down jaw hold, the first molar and the second molar, and tooth neck part. The draught buttons of upper and down jaw hold are on the opposite direction to each other, and they connect with each other by spring draught equipment. This invention is comfortable for sufferer to increase the cure of OSAHS.

The invention relates to a tooth cleaning kit, which consists of a work tip unit, a polishing unit and a fixed frame unit. The work tip unit includes supragingival tooth cleaning work tip, a shallow periodontal tooth cleaning work tip and a deep periodontal tooth cleaning work tip; the end face of the supragingival tooth cleaning work tip head is a beveled end face, and the end faces of the shallow periodontal tooth cleaning work tip and the deep periodontal tooth cleaning work tip are both tips; during use, firstly the supragingival tooth cleaning work tip is utilized to remove supragingival and tooth neck calculuses, dental plaques and dental cusp hard matters; then the shallow periodontal tooth cleaning work tip is employed to eliminate shallow periodontal calculuses and dental plaques rapidly and thoroughly; the deep periodontal tooth cleaning work tip is utilized to remove periodontal deep calculuses; and then a polish brush is employed to conduct preliminary polishing on the cleaned tooth faces, and a prophy cup is adopted for fine polishing. The tooth cleaning kit provided by the invention realizes leveling and polishing of tooth surfaces while rapidly and thoroughly cleaning teeth.

The present invention relates to a mucoperiosteal flap spreader for oral implantation. The mucoperiosteal flap spreader comprises a first clamp holder and a second clamp holder, the first clamp holderand the second clamp holder are used for clamping tooth necks of teeth on both sides of a tooth implantation area; two telescopic rod arranged in parallel are arranged between the first clamp holderand the second clamp holder, and both ends of each telescopic rod are respectively connected with the first clamp holder and the second clamp holder; each telescopic rod comprises a rod sleeve and anextension rod, and the extension rod can extend out of the rod sleeve by a set length to change a distance between the first clamp holder and the second clamp holder, the first clamp holder and the second clamp holder both comprise two fixedly connected clamp rods, a clamping space is formed between the two clamp rods, and a first threaded fastener is arranged respectively in each of the first clamp holder and the second clamp holder. The mucoperiosteal flap spreader can realize spreading of mucoperiosteal flaps of buccal sides and a tongue side at the same time, better exposes an operation visual field, and realizes the spreading of the mucoperiosteal flaps without being held by medical workers in an operation process.

The invention discloses a dental bleaching guide plate and a preparation method thereof, comprising a first plate and a second plate, the first plate and the second plate are butted to form an enclosed deep groove structure, and the first plate is provided with a guide hole, The distance between the two opposite sides of the first plate and the second plate is greater than the outer diameter of the tooth neck of the tooth, so that the tooth can be inserted into the deep groove, and the sides of the first plate and the second plate have a gap with the side of the tooth; The guide plate can be placed on the outside of the teeth to isolate the area of ​​teeth that need to be bleached from the area of ​​non-bleached teeth, which can prevent the bleaching agent from contacting the rest of the teeth. The purpose of accurately controlling the smearing range, smearing amount, zonal coloring and bleaching, and accurately locating the administration position is achieved.

The invention discloses a zipper tooth. The zipper tooth comprises a tooth tail, a tooth neck and a tooth head which are connected in sequence. The widths of the tooth tail and the tooth head towards the tooth neck are gradually reduced, and a first tooth head clamping groove and a second tooth head clamping groove which are symmetrically disposed are formed at the position of the tooth neck. One side of the tooth tail is recessed to form an inner cambered surface, the other opposite side of the tooth tail is protruded outwards to form an outer cambered surface, the inner cambered surface and the first tooth head clamping groove are located on the same side, and the outer cambered surface and the second tooth head clamping groove are located on the same side. The zipper tooth has the advantages that the zipper tooth is designed by adopting multiple cambered surfaces in combination with the gesture of the butterfly collecting pollen, and the single zipper tooth and a whole present dynamic charm; compared with an ordinary product which is stiff, the zipper tooth can provide more matching element requirements for clients. The invention further provides a zipper using the zipper tooth.

A saw blade (4) for a machine operating with adjacent saw teeth traveling in two opposite and parallel directions comprises a blade substrate, teeth (16), and tooth necks (30) formed at the periphery of the substrate for holding the teeth (16) in place. Each tooth neck (30) has a protection surface (34), which is located in a plane that is parallel to the plane of the blade substrate (8), for protecting the tooth (16) against impact with any part of said adjacent saw blade. Each tooth (16) is located on the respective neck (30) in such a way that the tooth (16) is displaced from the protection surface (34) and from the adjacent saw blade in a direction normal to the plane of the protection surface (34).

The invention relates to a nested joint for an opened conveyer belt. The joint is in an arrow tooth shape, and the symmetrical tooth top angles are 30-60 degrees. The width of a tooth neck is 1 / 4 to 3 / 4 of the width of a tooth shoulder, and the joint tooth length is in direct proportion to the minimum turning diameter of the conveyer belt. The same tooth breaking mode is adopted at the two ends, namely the A end and B end, of the opened conveyer belt, and tooth tips of the A end and B end are staggered and can be nested one by one; and the joint tooth side faces of the A end and B end are coated with adhesives at first, then nested and afterwards solidified, and accordingly connection is completed. The thickness of the opened conveyer belt is not smaller than 0.8mm and not larger than 6mm. The joint can prevent disengaging between teeth in the joint treatment process, and large gaps are avoided; and meanwhile, strength of the conveyer belt at the joint position is improved, and the service life of the conveyer belt is made longer.

The invention relates to the technical field of tooth restoration, in particular to a tooth neck shoulder preparation method in the tooth full-crown repair process and a special bur therefor. According to the technical scheme, the method comprises the following preparation steps that S1, a used bur is subjected to surface disinfection by soaking for 20-30 min, the texture part of the bur is cleaned for 1-5 times with a toothbrush with a small head after soaking, and finally the bur is washed with clear water; S2, the used bur is placed in a high-low speed handpiece used by a doctor, and installed, and then the bur waits for use; and S3, if the neck of the tongue side or the adjacent face takes metal as the crown edge, the neck edge can be prepared into a feather shape, a groove shape or a right-angle inclined plane shape, and if the lip-cheek side or the full crown edge is porcelain, the tooth neck edge should be prepared into a right angle or a 135-degree concave surface. According to the invention, the strength and the beauty of the neck edge porcelain can be ensured, the accuracy and the suitability of the edge of the restoration body are also improved, and the advantages of small gingival irritation of the upper gingival edge and the beauty of the lower gingival edge are also integrated.

The invention provides a bionic tooth type cutting tooth, and belongs to the field of well drilling. The bionic tooth type cutting tooth comprises a tooth-shaped body, wherein the tooth-shaped body comprises a base body which is made of hard alloy and a polycrystalline diamond thin layer which is connected to the upper part of the base body; the base body comprises a tooth crown, a tooth neck and a plurality of protruding tooth roots which are arranged at intervals in sequence from bottom to top, the polycrystalline diamond thin layer is arranged on the upper surface of the tooth crown, and the protruding tooth roots are inserted into positioning holes in tooth fixing nest grooves of a drill bit blade; and tooth grooves are formed between every two adjacent protruding tooth roots, and the opening direction of each tooth groove faces the end away from the polycrystalline diamond thin layer. According to the structure, the cutting tooth can be effectively prevented from falling off due to impact, cutting stress which is borne by the cutting tooth can be effectively dispersed, stress concentration is reduced, and the tooth fixing capacity is enhanced.