46 results about "Impact tooth" patented technology

This invention relates to the field of oral image analysis technology, specifically to a method for assisting in the identification of impacted teeth based on three-dimensional oral images. The method filters edge pixels in oral CT images to obtain enhanced images based on the degree of grayscale variation of these pixels and the shape, edge clarity, and grayscale distribution of their respective analysis areas. Then, based on the shape and tilt differences between the enhanced sagittal CT image and other tooth regions of the wisdom tooth in the three-dimensional oral model, the area of ​​the corresponding tooth region in the enhanced axial CT image, and the distance between adjacent tooth regions in the enhanced coronal CT image, the impacted wisdom tooth in the three-dimensional oral model is determined. This invention effectively improves the accuracy of impacted wisdom tooth identification.

The integrated adjustable impacted tooth auxiliary traction device comprises a base and an integrated adjustable traction mechanism. The base is connected to the surface of the impacted tooth. The integrated adjustable traction mechanism comprises an adjustable traction chain, at least two integrated traction mechanisms are arranged on the adjustable traction chain, the integrated traction mechanism comprises a connecting ring and a traction part, the connecting ring can be connected to form the adjustable traction chain, the traction part is provided with an opening, and the traction device can enter the traction part from the opening to continuously pull the impacted tooth. The integrated adjustable impacted tooth auxiliary traction device can not only build an adjustable chain structure to accurately control the length and direction of the free end, but also build an open hook structure of the free end through the integrated design of the opening, so that the closed orthodontic rubber band can be directly hung and pulled, the patient can complete the orthodontic rubber band hanging operation independently, and the clinical application is very convenient and fast.

The invention discloses a dynamic control system for crown cutting traction of impacted teeth. The dynamic control system comprises the following steps: acquiring the change trend of traction force along with time and the change trend of inflammation signals along with time in real time; controlling the micro excitation unit to apply micro vibration according to the change trend of the traction force and the change trend of the inflammation signal, and synchronously acquiring the periodic response waveform of the inflammation signal; s3, calculating a phase difference relative to micro excitation according to the periodic response waveform of the inflammation signal to obtain an inflammation phase sensitivity index; the maximum traction displacement increment and the minimum traction recovery interval allowed by the current traction period are calculated according to the degree that the inflammation phase sensitivity index deviates from the preset safe phase interval; according to each traction period, whether the accumulated traction displacement exceeds the maximum traction displacement increment or not and traction is executed when the traction interval is not smaller than the minimum recovery interval or not is judged; and dynamically adjusting an anti-inflammatory dose parameter based on the continuous change trend of the inflammation phase sensitivity index in the plurality of traction cycles.

The invention discloses a crown cutting and traction integrated tool for impacted teeth with inferior alveolar nerve injury risk, which utilizes a telescopic part made of a hydrogel material, has reversible performance of water absorption expansion and dehydration contraction, can realize micro-amplitude reciprocating deformation under the natural water environment change of an oral cavity or humidity control adjustment, and can be used for preventing and treating the impacted teeth with the inferior alveolar nerve injury risk. Therefore, slight stress stimulation in alternating directions is continuously applied to impacted teeth after traction is completed, periodontal ligament activity and an open state of a traction channel are maintained through reciprocating small force action, bridging hard connection between tooth roots and bone tissues is effectively prevented, initial resistance of second-time traction is remarkably reduced, and the secondary traction effect of the impacted teeth is improved. The operation risk of breaking through adhesion tissues again in clinic is reduced, the postoperative nerve traction complications and the tooth root absorption probability are further reduced, and the safety and efficiency of the whole treatment process are improved.

The invention belongs to the technical field of orthodontic instruments, and relates to an orthodontic device for drawing embedded impacted teeth, comprising: a fixing assembly comprising two groups of bands; the connecting assembly comprises a connecting piece; the stress application assembly comprises a traction hook and a spiral spring auxiliary bow, the spiral spring auxiliary bow is formed by continuously bending a traction wire in the axial direction of the traction wire to form a plurality of ring-shaped structures arranged at intervals, the bending direction of the ring-shaped structures is adjustable, and the number of the ring-shaped structures can be increased or decreased. Through the design that the traction wire is continuously bent in the traction direction to form the multiple spiral spring auxiliary arches which are arranged at intervals and are of the ring-shaped structures, the traction direction can be adjusted according to the bending direction of the ring-shaped structures, and the number of the ring-shaped structures can be adjusted according to the traction distance; the multiple ring-shaped structures arranged at intervals are used for providing continuous and soft traction force, the moving direction of teeth is accurately controlled, and the orthodontic treatment effect is guaranteed.

The utility model relates to the field of electrical engineering, and discloses a square socket punching device which comprises a supporting rod, a tunneling assembly is arranged at the left end of the supporting rod, a connecting rod is fixedly connected to the right end of the supporting rod, the tunneling assembly comprises a supporting frame, and the right end of the supporting frame is fixedly connected to the left end of the supporting rod. A supporting frame is fixedly connected to the left end of the supporting frame, impact teeth are fixedly connected to the left end of the supporting frame, a discharging groove is formed in the right surface of the supporting frame, the supporting frame is arranged to be in an arc shape, the left surfaces of the impact teeth are arranged to be rectangular planes, and fillets are arranged at the connecting positions of the impact teeth and the supporting frame. According to the rectangular mounting hole cutting device, the connecting rod is arranged, the whole device can be installed at the front end of an electric hammer, then the electric hammer is started to drive the supporting rod to move front and back, the supporting rod drives the supporting frame to vibrate left and right through the supporting frame, the supporting frame impacts a working plane through the impact teeth, and therefore a rectangular mounting hole can be cut.

The invention belongs to the technical field of biomedical materials, and discloses a natural tooth composite material bone grafting scaffold for alveolar bone repair and a design and preparation method thereof. The method comprises the following steps: collecting orthodontic teeth, impacted teeth, multiple teeth, loose teeth and other natural teeth extracted in oral medical treatment, and performing technical treatment to obtain raw material powder; ball-milling and mixing the bioactive glass powder, the carbon-based material powder and the natural dental powder to obtain mixed powder; the mixed powder is used as a raw material, and the bone grafting scaffold is obtained through computer aided design and digital light processing technology 3D printing; and modifying the surface of the 3D printing bracket by using the polydopamine-carbon-based material composite coating to obtain the natural tooth composite material bone grafting bracket. The natural tooth composite material bone grafting scaffold obtained by the invention has good mechanical property, controllable degradation property and antibacterial property, and has good biocompatibility and osteogenesis efficiency.

The utility model provides a salix leaf drag hook for impacted tooth extraction surgery in oral and maxillofacial surgery, which relates to the technical field of medical instruments and comprises a holding part and a drag hook part, and the holding part is in a salix leaf shape; the draw hook part comprises a first draw hook and a second draw hook, the first draw hook and the second draw hook are symmetrically arranged at the two ends of the holding part, the first draw hook and the second draw hook are reversely folded in the same direction, the joint of the first draw hook and the holding part is in smooth transition, and the joint of the second draw hook and the holding part is arranged in a convex shape. According to the utility model, by designing the holding part in the shape of the willow leaf, flexible operation experience is provided, different hand types are adapted, and the stability is ensured; due to the double-end design, the drag hook can be operated at various angles, and the drag hook can flexibly adapt to impacted teeth at different positions; the head reflexed design can accurately pull soft tissues and expose the surgical field, and is suitable for complicated flap turning and boning operations; the micro-arc design enables the contact surface to be smoother, reduces compression on gingiva and soft tissue, and adapts to different soft tissue structures.

The utility model relates to a percussion drill hammerhead which comprises a hammer cap and a hammer core, the hammer cap is fixed on the upper plane of the hammer core, the diameters of circumferential walls between the hammer cap and the hammer core are equal, a lifting hole is formed in the hammer cap, and a lifting assembly used for lifting the percussion drill hammerhead is installed in the lifting hole. Octagonal prism wedge-shaped teeth and octagonal prism wedge-shaped side tooth blocks are fixed to the bottom plane of the hammer core in a partial penetration welding mode, the multiple octagonal prism wedge-shaped side tooth blocks are arranged in pairs and distributed on the circumferential wall of the hammer core at equal intervals, and the multiple octagonal prism wedge-shaped teeth are arranged in the center of the hammer core; according to the utility model, the wear resistance and durability of the impact teeth and the hammer head are improved, the frequency of maintaining and replacing the impact teeth and the hammer head is reduced, the work efficiency of impact hole forming is improved, consumables and other costs are reduced, and the economical efficiency is improved; and the maintenance and replacement frequency is reduced, and smoke and light pollution generated by welding are also reduced.

The utility model relates to the field of orthodontics, especially to adjustable embedded tooth auxiliary external traction device. The utility model provides an adjustable embedded tooth auxiliary external traction device which can move and adjust the traction block up and down, left and right and forward and backward according to requirements, and is convenient for flexible adjustment of traction point. The adjustable embedded tooth auxiliary external traction device comprises elastic bands and pull rings, the elastic bands are provided with two left and right elastic bands, and the elastic bands are connected with pull rings at the front part. The utility model adjusts the height position of the traction block through up and down movement of the adjusting rod, then moves and adjusts the adjusting rod forward and backward, adjusts the distance between the traction block and the user's lip, then moves and adjusts the traction block left and right on the adjusting rod, so that the traction block can be moved and adjusted up and down, left and right and forward and backward according to requirements, and the effect of convenient flexible adjustment of traction point is achieved.

A guiding device mounted on an impacted tooth, comprising a hook and a wire connected to the rear end of the hook. The hook has a curved shape and capable of passing through the transverse perforation of the impacted tooth. A method for passing the guiding device through the impacted tooth, by using the hook to guide the wire through the transverse perforation. A fixing member mounted on the impacted tooth, formed using the aforementioned method. A tool for assisting passing the guiding device through the impacted tooth, comprising a handle and a receiving portion connected to the handle, the receiving portion comprising a receiving hole and a slot. The receiving hole is capable of tightly receiving the hook of the guiding device, and the slot is in communication with the receiving hole, allowing the wire of the guiding device to pass through and extend out of the receiving portion.

The invention discloses an embedded tooth impacted tooth positioning traction simulation system based on a 5D bionic technology, which comprises a jaw model and a pre-operation simulation system, the jaw model is provided with an alveolar socket, a tooth root model and an embedded tooth model are detachably arranged in the alveolar socket, the jaw model is provided with a traction device in a mutual matching manner, and the traction device is provided with a tooth root model and an embedded tooth model. The traction device comprises two fixers and a traction arch wire; the two fixers are sleeved on the tooth root model; the traction arch wire is connected with the two fixers; a closed curve for hooping the embedded tooth model is arranged on the traction arch wire; a positioning guide plate is used in cooperation with the tooth root models, a positioning window is arranged on the positioning guide plate, the position of the positioning window corresponds to the position of the embedded tooth model, and a model taking device is used in cooperation with the closed curve. A real operation environment is provided for a doctor, the positioning guide plate accurately corresponding to the position of the embedded tooth is combined, the traction device can be guided to be in place rapidly and accurately, the precision and efficiency of preoperative planning are greatly improved, and the operation risk is reduced.

The invention discloses a dental ultrasonic osteotome, relates to the technical field of ultrasonic osteotomes, and aims to solve the technical problems that an existing ultrasonic osteotome is not matched with low-position impacted teeth and gaps of embedded impacted teeth are increased. The working tip comprises a working tip body, the working tip body comprises a rod part connected with a handle, a neck part and a head part are sequentially arranged at the end, away from the handle, of the rod part, the head part is of a bent arc-shaped structure, the included angle between the axis of the head part and the axis of the neck part is 60-100 degrees, and a blade face is arranged on the head part. The head adopts the bent arc-shaped structure, and the head and the neck are vertically or obliquely arranged, so that on one hand, the head can bypass the top surfaces and the side surfaces of the teeth (similar to covering the teeth) through the bent arc-shaped structure, contact with the alveolar bone of the teeth and increase the gap of the alveolar bone part, and the difficulty of increasing the gap of the alveolar bone is reduced; and on the other hand, as the head part adopts the bent arc-shaped structure, when the covering and buckling teeth are in contact with the alveolar bone of the teeth, the shape of the tooth root can be fit to increase the gap of the alveolar bone, and the gap increasing effect is better.

The present application relates to the field of dental correction tools, in particular to a device for traction of impacted teeth. The device is composed of a traction hook and an appliance. The traction hook is adhered to the crown of the impacted tooth to be tractioned. The traction hook is composed of an adhesive accessory and a ligature wire. One end of the ligature wire is fastened to the adhesive accessory, and the other end of the ligature wire is free and curved into a hook. The appliance is composed of an elastic traction wire and a retaining device. One end of the elastic traction wire is embedded in the retaining device, and the other end of the elastic traction wire is curved and connected to the free curved end of the ligature wire of the traction hook. The device can reasonably adjust the traction direction of the impacted teeth in three-dimensional space, and can correct the impacted teeth in different dentition periods. The device has low requirements for the anchorage teeth, is simple to manufacture, low in price, and has remarkable effects.

This invention relates to a method, device, and medium for displaying mechanical information for risk warning during impacted tooth extraction. The method includes: Step S1: Obtaining the three-dimensional modeling results of each tissue unit; Step S2: Obtaining the modeling results of each tooth segment unit; Step S3: Constructing the tooth segment and its contact constraints with surrounding tissues; Step S4: Based on the constructed contact constraints, combined with the overall finite element stiffness matrix and operational load, solving for the displacement response of each finite element mesh; Step S5: Based on the displacement response of each finite element mesh and the shape function, obtaining the displacement matrix of each element, and further obtaining the strain tensor of each element; Step S6: Based on the constitutive matrix of the tissue material corresponding to each element and the strain tensor, obtaining the stress tensor of each element; Step S7: Comparing the stress tensor of each element with its pre-configured threshold and assigning color values ​​to the finite element mesh of each element. Compared with the prior art, this invention has the advantages of real-time performance and high accuracy.

The utility model discloses a rock breaking drill bit capable of unloading drilling resistance of a ground stress weakening stratum at the bottom of a well, which belongs to the technical field of drilling equipment and comprises a drill bit body, blades are arranged on the drill bit body, and cutting teeth are arranged on the blades. A drilling fluid runner is arranged in the middle of the drill bit body, a rotating shaft is arranged in the middle of the drilling fluid runner, a rotating handle is coaxially and fixedly arranged at the lower end of the rotating shaft, and a supporting piece is arranged between the upper portion of the rotating shaft and the side wall of the drilling fluid runner and provided with a plurality of supporting runner holes. A plurality of impact teeth are evenly arranged on the bottom end face of the drilling fluid flow channel in the circumferential direction and downwards penetrate through the drill bit body in the axial direction. A driving assembly used for driving all the impact teeth to conduct synchronous reciprocating impact is arranged on the rotating handle. The impact teeth capable of impacting downwards in a reciprocating mode in the axial direction are arranged to impact rocks, then the pressure of the rocks is unloaded, the rock breaking difficulty of the cutting teeth is reduced, the rock breaking efficiency is improved, and the service life of the cutting teeth is prolonged.

A dental instrument includes a handle and an extension portion, the extension portion has a frontal protrusion that is used to hang an elastic traction ligature. An impacted tooth traction device includes a first bracket for being fastened to an impacted tooth, and a second bracket for being fastened to an anchor body, and the aforementioned elastic traction ligature that is used to connect the first bracket with the second bracket. A method for installing the impacted tooth traction device includes: fastening the first bracket to the impacted tooth, fastening the second bracket to the anchor body, and to connect the elastic traction ligature to the first and the second brackets after the elastic traction ligature is pulled to a certain length.

A magnetic traction device for impacted tooth, comprising a first magnetic component fixed to a normal tooth and a second magnetic component fixed to an impacted tooth. There is an attractive magnetic force between the first and second magnetic components, thereby pulling the impacted tooth toward the direction of the normal tooth where the first magnetic component is located.

The application discloses an impact gear structure, which comprises a static impact gear and a dynamic impact gear, convex tooth parts are formed on opposite sides of the static impact gear and the dynamic impact gear, the two convex tooth parts can be periodically engaged with rotation of the dynamic impact gear, the convex tooth part comprises a plurality of annularly-distributed teeth, each tooth comprises a contact slope and a tooth top end located at the edge of the contact slope, and the end points of the tooth top end are kept on the same horizontal plane; the static impact gear and the dynamic impact gear are in surface-to-surface contact, that is, the whole end surface of one tooth top end is in contact with the contact slope and the tooth top end of the other convex tooth part, and in the same way, one contact slope is in surface-to-surface contact with another contact slope, so that the contact area of the two convex tooth parts can be effectively increased, the top point is prevented from being continuously abraded, and the service life of the impact gear is prolonged.

This invention provides a guided orthodontic device for mandibular impacted teeth treatment, belonging to the field of oral medical device technology. It includes a lingual bar, multiple retention rings, at least one abutment, and at least one guide rod. The lingual bar is a continuous arc-shaped metal wire extending along the lingual side of the mandibular dental arch. The lingual side of each retention ring is fixedly connected to the lingual bar. The lower end of the abutment is fixed to the lingual bar, and its upper end extends upward and has an abutment portion for contacting the abutment tooth surface. The proximal end of the guide rod is fixed to the lingual bar, and its distal end extends towards the oral vestibule, with a connecting portion at its end for attaching a traction component. This invention provides stable, distributed surface anchorage through multiple retention rings, effectively transmits the gingival force experienced by the device to the abutment tooth through the abutment, further enhancing anchorage stability. The flexible, cantilevered guide rod with a connecting portion at its end enables control of the traction direction of the impacted tooth.

The present application relates to the field of mining machinery, in particular to a reciprocating impact mining machine reciprocating impact bevel tooth discharge shovel, comprising a reciprocating impact box and a reciprocating impact bevel tooth discharge shovel, the reciprocating impact box comprises a reciprocating impact box body, a reciprocating impact power piece and a reciprocating impact guide piece, the reciprocating impact power piece is arranged in the reciprocating impact box body, the reciprocating impact power piece is supported by the reciprocating impact box body to drive the reciprocating impact guide piece, one end or both ends of the reciprocating impact guide piece extend out of the reciprocating impact box body, the reciprocating impact bevel tooth discharge shovel comprises a main tooth seat, a main impact tooth, a side discharge tooth wing plate and a side discharge bevel tooth, the main tooth seat is arranged at the end of the reciprocating impact guide piece extending out of the reciprocating impact box body, the top end of the main tooth seat is provided with the main impact tooth, the thickness of the side discharge tooth wing plate is less than that of the main tooth seat to reduce the height of the discharge surface of the reciprocating impact bevel tooth discharge shovel, the side discharge bevel tooth is staggered or symmetrically arranged or arranged in front of and behind the side discharge tooth wing plate, the tooth top end of the side discharge bevel tooth extends out of the side of the side discharge tooth wing plate plane, which is beneficial to the swept material impacted to flow out from the gap of the side discharge tooth wing plate with the side discharge bevel tooth, and reduces the resistance of the material to the reciprocating impact bevel tooth discharge shovel.

This invention discloses a method for segmenting impacted teeth and neural tubes based on media regions, belonging to the field of medical image processing technology. The method includes the following steps: S1000, preparation; S2000, model structure optimization; S3000, model training; S4000, continued training of the temporary model; S5000, segmentation prediction of impacted teeth and neural tubes. This invention improves the accuracy and fit of boundary positions, significantly enhances the segmentation accuracy and stability of low-media regions, and solves the technical problem of accurate semantic segmentation of structural overlap, media blurring, and boundary discontinuity regions in dental CBCT images.

Embodiments of the present invention provide a method and apparatus for determining the tooth number of a tooth. The method comprises: acquiring first dental crown data and second dental crown data of a same patient in at least one treatment stage; on the basis of the degree of overlap between the dental crown of a first tooth in the first dental crown data and the dental crown of a second tooth in the second dental crown data, determining the tooth number of the first tooth having a degree of overlap satisfies a first set threshold as the tooth number of the second tooth; and on the basis of a positional relationship between the dental crown of the second tooth having the tooth number and the dental crown of a third tooth, determining the tooth number of the third tooth, wherein the third tooth is any tooth other than the second tooth having the tooth number in the second dental crown data. By matching the tooth numbers on the basis of the first dental crown data and the second dental crown data, the tooth number of a corresponding permanent tooth in the second dental crown data and the tooth number of an impacted tooth in the second dental crown data are determined, thereby improving the efficiency and accuracy of determining the tooth number of a tooth.

The utility model relates to the field of medical auxiliary instruments, and discloses an impacted tooth tractor. According to the device, the tail ends of the side face frame, the lower jaw frame and the transverse connecting frame are movably connected with a connecting block, the surface of the connecting block is provided with a plurality of through holes and two threaded holes, and the surfaces of the two threaded holes are in threaded connection with a first fastening bolt and a third fastening bolt correspondingly; a second fastening bolt is in threaded connection with a through hole in the middle of the surface of the connecting block, the side face frame, the lower jaw frame and the transverse connecting frame penetrate through the surface of the connecting block through the through holes, and the side face frame, the lower jaw frame and the transverse connecting frame are movably arranged through the multiple through holes formed in the surface of the connecting block. The second fastening bolt arranged in a matched mode can facilitate adjustment and threaded fixation of the transverse connecting frame, meanwhile, the formed threaded holes are matched with the first fastening bolt and the third fastening bolt so that adjustment and threaded fixation of the side face frame and the lower jaw frame can be facilitated, and through the structural arrangement, a doctor can conveniently adjust according to the face shape of a patient.

The utility model discloses heavy load mine truck anti -impact tooth axle assembly relates to heavy load tooth axle assembly technical field, including center spline tooth axle, and the both ends of center spline tooth axle are fixedly installed through bearing seat, and the center of center spline tooth axle swing sleeve has main drive gear, and the both sides center of main drive gear all are set up and butt -joint buffer groove, the outer wall of center spline tooth axle swing sleeve has floating buffer tooth cover with the both ends of main drive gear, the outer wall of floating buffer tooth cover is provided with spiral tooth groove, when the great impact of main drive gear when receiving heavy load mine truck work, utilize the friction and disc spring group elastic compression absorption and buffer impact force of floating buffer tooth cover and butt -joint buffer groove, effectively reduced the direct action of impact force to center spline tooth axle, avoided the tooth axle fracture or deformation problem because of the impact of too big, significantly improved the anti -impact ability and life of tooth axle assembly.

The utility model discloses an impact tooth for rock breaking drilling and drill bit containing the impact tooth relates to oil and gas exploration field, including the cylinder and the cap for embedding in the drill bit, and the cap covers is established at the cylinder top, install retractable gland and the spring I of abutting tightly gland in the cylinder, and the one end of gland that projects the cylinder is equipped with the composite sheet, still be equipped with the striker of the inclined arrangement in the cylinder, and the tail end of striker extends to the cap, and the head end of striker is abutting tightly with the gland end face, and still be equipped with the spring II on the striker, and the both ends of spring II are respectively abutting tightly with cylinder bottom, striker head end. The utility model can make the drill bit in the drilling process, and the impact tooth can not only resist the impact load of axial, but also can reach the effect of impact rock breaking through the impact load of spring when the drilling pressure reaches the set limit.

The utility model discloses a high-strength wear-resistant change gear set, and belongs to the technical field of gears. The gear set comprises a multi-stage speed change gear, a gear set center shaft and a speed regulation gear ring which are all made of carburized and quenched alloy steel. The gear tooth middle section of the change gear is provided with an oil passing groove to improve lubrication, tooth surface bevel angles are machined at the two ends of the tooth crest to reduce meshing impact, and a tooth bottom groove is plated with a hard chromium wear-resistant layer to improve wear resistance; shaft hole oblique angles are arranged on two sides of the central shaft hole and are matched with transition oblique angles of the central shaft to reduce assembly friction; and the contact area of the adjacent gears is reduced by the annular tooth surface grooves at the spokes. Through structural optimization and surface strengthening, the wear resistance and the contact strength of the gear are remarkably improved, the service life of a change gear set is prolonged, and the gear set is suitable for a high-load gearbox system.

The application provides a traction device for impacted teeth and a preparation and operation method, comprising a traction hook, a shaped traction auxiliary bow, a prop, a transpalatal bar (TPA), a buccal tube, an anterior incline bend and a loop bend. The device has flexible traction direction, can flexibly add the position of the traction hook according to the required traction direction, and solves the problem of strong foreign body sensation and discomfort when the patient wears the traditional traction device. The bilateral molars provide anchorage, reducing the influence on the single tooth around the impacted anterior tooth. The application solves the problems of insufficient anchorage and single traction direction in the prior art, improves the correction efficiency, and has the characteristics of simple preparation, comfortable wearing and the like.

The present application belongs to the technical field of drilling tools, and particularly relates to a diamond drill bit and a manufacturing method thereof, which are used to solve the technical problem of low drilling efficiency of the diamond drill bit. The diamond drill bit comprises a drill bit body, a blade, a first cutting tooth and a second cutting tooth arranged on the blade, the blade is arranged on the side wall of the drill bit body and extends to the first end face of the drill bit body, and the blade comprises a core part, a nose part, a shoulder part and a gauge part in sequence in the direction away from the first end face; the second cutting tooth is used for pre-breaking the target rock stratum, the first cutting tooth comprises a first impact-resistant tooth and a first abrasion-resistant tooth, the first impact-resistant tooth is arranged on the shoulder part and the gauge part, and the first abrasion-resistant tooth is arranged on the core part and the nose part; the second cutting tooth comprises a second impact-resistant tooth and a second abrasion-resistant tooth, the second impact-resistant tooth is arranged on the shoulder part, and the second abrasion-resistant tooth is arranged on the gauge part, so that the arrangement of each cutting tooth is matched with the stress of each cutting tooth, thereby improving the drilling efficiency of the diamond drill bit.