31 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 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 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.

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 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 discloses a multi-effect foldable cleaning brush for the implant tooth neck. The multi-effect foldable cleaning brush comprises brush bristles (1), a brush head (2), a brush handle connecting end (3) and a brush handle body end (4). The brush bristles (1) are embedded into the brush head (2), the brush handle connecting end (3) is connected with the brush head (2) and the brush handle body end (4), and the brush head (2) comprises an upper layer basic plate (21) and a lower layer basic plate (22). The upper layer basic plate (21) and the lower layer basic plate (22) are connected or separated through a bottom connecting body (23), a middle connecting body (24) and a head connecting body (25) arranged inside so that the cleaning brush can be unfolded or folded to be used. Through unfolding or folding the upper layer basic plate and the lower layer basic plate of the brush head for usage, and designing the brush bristles to be of a special structure, the neck, the lingual surface and the proximal surface of an implant tooth and dental plaque and mild scales on the surface of the tongue can be more effectively cleaned at multiple angles, the periodontal health of the implant tooth is maintained, and the peri-implantitis is effectively prevented.

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 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 invention relates to a method for designing and manufacturing a shoulder-less window-opening veneer with incisal positioning, which comprises the following steps: 1) designing a veneer wax pattern on a shoulderless window-opening veneer preparation model, and computer-aided design; 2. ) The gingival edge of the veneer wax-up is designed to be a blade-like edge of 30-60 degrees; 3) The incisal edge of the veneer wax-up is designed to be in the shape of docking with the incisal end of the natural tooth; 4) The incisal edge of the veneer wax-up is third-class According to the position, design two hook-shaped structures covering the incisal ends of the teeth; 5) Use casting, CNC cutting or 3D printing methods to print wax patterns, or use CNC cutting or 3D printing methods to directly make veneers; 6) Use hook-shaped structures As a positioning termination, the finished veneer is bonded to the tooth, and then the hook structure is ground off and polished. The invention can significantly reduce the preparation amount of the tooth neck in the teeth veneer restoration, and improve the final positioning accuracy of the veneer on the surface of the tooth preparation.

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 present invention relates to a dental transfer formwork system, the dental transfer formwork system has a transfer formwork and a denture base, the transfer formwork and the denture base are especially manufactured using the same CAD / CAM device, wherein the transfer formwork and The denture base has multiple recesses for the teeth, the incisal and / or occlusal areas of the teeth fit into the transfer template recesses, and the cervical areas of the teeth fit into the denture base recesses, the teeth respectively to be bonded to the denture In the base recess, it is characterized in that the transfer template (20) has an occlusal side (22) corresponding to the occlusal plane, said occlusal side as a reference for the presence or absence of an occlusal interference contact point realized in such a way that it protrudes beyond the transfer template (20) The tooth area (310) on the occlusal side (22) of the can be ground into a neat dentition closure, and the bonding surface of each tooth (31, 33, 35, 37) in the denture base (10) has a predetermined a minimum threshold, which in particular is at least 10 mm 2 , preferably at least 18mm 2 and particularly preferably at least 25mm 2 , said threshold value is determined in particular in the CAD software of the CAD / CAM device used to manufacture the denture base.

The invention discloses zipper teeth of a novel firmly-meshed zipper. Each zipper tooth comprises a tooth head, a tooth neck and a tooth tail, wherein the tooth head, the tooth neck and the tooth tail are sequentially connected. For each tooth, the tooth head is provided with an outer tooth head and an inner tooth head, the tooth neck is provided with an outer tooth neck and an inner tooth neck, the tooth tail is provided with an outer tooth tail and an inner tooth tail, the outer tooth head, the outer tooth neck and the outer tooth tail form an outer tooth, the inner tooth head, the inner tooth neck and the inner tooth tail form an inner tooth, and the outer tooth head is diminished from inside to outside. The invention further discloses the zipper with the zipper teeth. According to the zipper teeth and the zipper with the zipper teeth, due to the fact that each outer tooth neck is diminished from inside to outside, a recession space can be formed when the zipper is closed and bends outwards, the outer teeth will not be abutted, disturbing force making the meshed zipper teeth disengage can be prevented, and therefore meshing stability of the zipper in an outward-bending state can be improved. Due to the fact that each outer tooth neck is diminished from inside to outside, the closed zipper can bend outwards more easily, the radius of the bending portion is small, and the closed zipper can be smoother, more fitted and suitable for high-grade products like high-grade clothes.