49 results about "Mandibular tooth" patented technology

The invention discloses a CBCT tooth segmentation method and system based on an anatomical perception cascade network, and the method comprises the steps: a first stage, carrying out the simplified dichotomy segmentation based on an original CBCT image and a coarse segmentation network taking 3D U-Net as a trunk, outputting maxillary and mandibular tooth probability graphs, and taking the maxillary and mandibular tooth probability graphs as prior information to guide the generation of an SDM; in the second stage, the original CBCT image and the calibrated maxillary tooth probability graph and the calibrated mandibular tooth probability graph are spliced together, a formed multi-channel input tensor is input into a fine segmentation network, the fine segmentation network takes Residual U-Net as a trunk, and an improved AGBR module and an improved SDMAA module are integrated in an encoder-decoder architecture of the fine segmentation network; and the decoder fuses all refined and re-calibrated feature maps, and upsamples and reconstructs 42 types of instance segmentation results with correct topology and clear boundaries. According to the method, the problem that in the prior art, when the inherent and local boundary fuzzy defect in CBCT is overcome, an effective pertinence mechanism is lacked is solved, and precise and robust 42-class instance segmentation can be achieved.

The utility model discloses a dental system which comprises two correcting devices corresponding to the Nth correcting step and the (N + M) th correcting step, N and M are positive integers, each correcting device comprises a jaw plate structure connected with the upper jaw and the lower jaw, each jaw plate structure comprises a first part arranged corresponding to the upper jaw teeth and a second part arranged corresponding to the lower jaw teeth, and when the jaw plate structures are connected with the upper jaw and the lower jaw, the first part is connected with the first part. The first part and the second part abut against each other to form an abutting face, the two jaw plate structures corresponding to the two correctors have different parameters, and the different parameters are configured as follows: when the jaw plate structures are connected with the upper jaw and the lower jaw, the different parameters generate different acting forces and / or different moments. Different parameters can enable the two correctors to generate different acting forces and / or different moments, and the correction requirements of different correction steps are met through the different acting forces and / or the different moments.

A method for diagnosing and recommending treatment to a patient that may or may not present with occlusal disease includes acquiring 3D scans of the patient's maxillary and mandibular arches, and acquiring occlusal assessment data of the patient's teeth and dental arches. The method also includes automatically generating a treatment plan recommendation, and a recommended treatment plan projection and a non-treatment projection based, at least in part, on the acquired 3D scans of the patient's maxillary and mandibular arches, and the acquired occlusal assessment data of the patient's teeth and dental arches. The method also includes automatically displaying a rendering of the patient's simulated dental arch N years in the future based on the automatically generated recommended treatment plan projection, and a rendering of the patient's simulated dental arch N years in the future based on the automatically generated non-treatment projection, where N is greater than 1.

A mandibular advancement device with enhanced stability, including an upper tray assembly formed by an upper moldable component and an upper bracket, and a lower tray assembly formed by a lower moldable component and a lower bracket. The upper bracket and the lower bracket each extend a front wall from their front side edges near the labial side, while at least the lower bracket extends a rear wall along the median sagittal plane from the rear side edge near the lingual side. The stability is achieved by inclining the front wall of at least the upper bracket towards the lingual side. The rear wall of the lower bracket works in conjunction with the front wall to clamp the lower dental arch. Additionally, the stability feature includes a molar clamping section, further enhancing the overall stability of the mandibular advancement device.

To provide a dental set for open bite treatment, which can easily depress molars in a short period of time without causing extrusion of front teeth when it is necessary to depress molars in open bite treatment, thereby enabling open bite treatment. [Solution] The dental set for open bite treatment has a plurality of brackets (201) attached to the patient's maxillary or mandibular teeth, an orthodontic wire (11) attached to these brackets, and an intermaxillary elastic (400). When indenting a patient's maxillary molars, the intermaxillary elastic is stretched by attaching the orthodontic wire to the bracket attached to the crown of the maxillary canine from above and stretching it, then hooking it from below to the bracket attached to the crown of the mandibular canine, and further hooking it onto a bondable tube (202) attached to the crown of the mandibular first molar. The same applies when indenting a patient's mandibular molars.

Disclosed in the present invention is a dental system, comprising two appliances corresponding to an N-th orthodontic treatment step and an (N+M)-th orthodontic treatment step, wherein N and M are both positive integers; each appliance comprises an occlusal plate structure connected to maxillary and mandibular arches; each occlusal plate structure comprises first portions arranged corresponding to maxillary teeth, and second portions arranged corresponding to mandibular teeth; when the occlusal plate structure is connected to the maxillary and mandibular arches, the first portions and the second portions abut against each other to form abutting surfaces; the two occlusal plate structures corresponding to the two appliances have different parameters; and the different parameters are configured to generate different acting forces and / or different torque when the occlusal plate structures are connected to the maxillary and mandibular arches. Different parameters of the present invention can enable two appliances to generate different acting forces and / or different torque, thereby satisfying orthodontic treatment requirements of different orthodontic treatment steps by means of the different acting forces and / or different torque.

According to the design and manufacturing method of the orthodontic postoperative intermaxillary traction device based on the invisible orthodontic device, CT scanning is conducted on a patient, craniomaxillofacial and tooth three-dimensional data are collected, and preparation is made for obtaining three-dimensional virtual tooth data of the patient through manufacturing of an anhydrite tooth model; data of a patient are imported into cranio-maxillofacial surgical operation planning software, a cranio-jaw virtual model of the patient is established, a manufactured anhydrite tooth model is subjected to three-dimensional scanning, dentition data are obtained, a maxillary tooth bone section is moved to a target position through a simulated operation on the virtual cranio-jaw model, and the patient is subjected to cranio-maxillofacial surgical operation planning software. And then determining a target position of a mandibular tooth bone section based on a final occlusion relationship, importing dentition data of the patient into three-dimensional virtual design software, performing Boolean operation, and manufacturing a traction device by using a three-dimensional printing technology. According to the device, assistance of methods such as a dental arch splint and an intermaxillary traction nail is not needed, intermaxillary elastic traction can be carried out after an invisible orthodontic patient completes a orthodontic operation, and it is ensured that the occlusion relation after the orthodontic operation meets the requirement.

The application discloses a pretreatment method for a Neophocaena asiaeorientalis tooth section for micro-chemical analysis, and comprises the following steps: collecting mandibular teeth of a dead Neophocaena asiaeorientalis; cleaning the teeth to remove soft tissues on the surface and inside the tooth root, and drying the cleaned teeth; fixing the teeth on a base made of an epoxy resin block, and fixing the base in a mold; configuring an epoxy resin reagent, embedding the teeth in the epoxy resin; cutting the buccal side and the lingual side of the teeth along the coronal surface by using a low-speed precision cutting machine, so that the central axis of the coronal surface of the teeth is contained in a 3mm-thick section; further grinding and polishing one side of the section, fixing the section on a glass slide; grinding and polishing the other side of the section, and obtaining the section after cleaning and drying. The Neophocaena asiaeorientalis tooth section obtained by the pretreatment method has the advantages of smooth surface, precise polishing, difficulty in breaking and cracking, and maximization of growth axis surface, and can be used for micro-chemical analysis and growth layer group analysis of Neophocaena asiaeorientalis teeth.

1. Name of the design product: tooth arrangement tool plate. 2. Use of the design product: mainly used for the plane plate of maxillary teeth and mandibular teeth alignment. 3. Design points of the design product: in shape. 4. Picture or photo that best indicates the design points: perspective view.

This invention discloses a series of osteotomy guides for condylar osteotomy and their manufacturing method, relating to the field of medical device technology. The manufacturing method includes the following steps: creating a hard plaster dental model; establishing a virtual three-dimensional craniomaxillary model; acquiring virtual dentition data and replacing the dentition data in the three-dimensional model with virtual data; determining the target position of the mandibular bone segment; planning and virtually designing the osteotomy lines for coracoid and condylar resection, and virtually resecting the affected side's coracoid and condylar processes, and virtually designing the affected side's temporomandibular joint reconstruction to obtain a three-dimensional model of the affected side's ascending ramus; drawing the coracoid osteotomy guide; drawing the condylar osteotomy guide based on the mandibular morphology and osteotomy line position; and three-dimensionally printing the guide. By employing the above method, the guide can be fixed using its own shape, eliminating the need for additional fixation measures, reducing the difficulty of the procedure, shortening the operation time, and improving the accuracy of condylar resection; it also reduces the possibility of design errors caused by multi-data matching and fusion during the digital design process.

The invention provides an auxiliary device for forward traction and a correction system, and relates to the technical field of orthodontics, the auxiliary device for forward traction comprises an anchorage column and a connecting rod, the anchorage column is connected with teeth, one end of the connecting rod is connected with the anchorage column, the other end of the connecting rod is connected with a front traction surface frame, and the anchorage column is provided with a blind hole or a through hole; the correction system comprises a front traction surface frame and the auxiliary device. The anchorage foundation is transferred to the lower jaw dental arch from the traditional chin pocket, so that the stress discomfort of the chin is avoided; meanwhile, the blind hole or the through hole facilitates accurate positioning and stable assembly of the connecting rod, the overall structural stability and the force conduction efficiency are improved, and therefore the technical problems that a traditional front traction device is uncontrollable in anchorage, the chin pocket is pressed and uncomfortable, and molar distalization is difficult to support synchronously are solved, and the comfortable, stable and multifunctional integrated correction effect is achieved.

In a digital analysis of chewing, based on feedback principles and preferred optical marker position recognition, the interdependent movement patterns of maxillary and mandibular teeth are analyzed using bidirectional synchronization of tactile and motion image acquisition technologies, and their movements are recorded by a camera system. The camera system preferably integrates at least two systems, one on the right side of the mouth / face and the other on the left side, or one system is centered relative to the facial centerline. Each system has at least one (preferably three) camera, including at least one and preferably two monochrome or color cameras with a minimum resolution of 2.3 Mpx and a high frame rate of at least 1000 frames per second (FPS), equipped with dedicated optics / lenses, and at least one high-resolution and low-frame-rate color camera with a minimum resolution of 12 Mpx and a minimum frame rate of 25 FPS, capable of recording markers (M1) indirectly fixed by positioning patterns, or markers directly / independently (M2 – preferably using IPA technology) affixed to the veneer surface of the crown of the maxillary natural / artificial tooth, and markers independently affixed to the veneer surface of the crown of the natural / artificial tooth. Because of the connection between the camera and the trigger card, their operation is synchronized in time and is responsible for recording the position / movement of the upper crown with M1 and / or M2 markings relative to the lower crown with M1 and / or M2 markings, as well as the position / movement of the upper and lower crowns with M1 and / or M2 markings relative to the alveolar bone of the upper and lower jaws and the patient's face with M2 markings, the markings being affixed to facial feature anatomical points. This is all recorded synchronously in video film technology, and then the 3D scans of the upper and lower teeth with M1 and / or M2 markings are stitched into the video film, wherein the scans are obtained through intraoral or extraoral scanning technology. Furthermore, it can convert the repositioning of M1 and / or M2 markers. Movements during patient chewing assessment are recorded by a camera system, and the captured images are transcribed into a software environment. Digital acquisition of data from the M1 and / or M2 optical markers is submitted for further analysis in the software environment, enabling the conversion of these marker repositionings into the number of collisions between the upper and lower crowns, on which M1 and / or M2 markers are fixed. This is preferably read by a tactile device, preferably a tactile manipulator, to map / control the repositioning caused by these collisions via vibrations at a frequency between 1 and 4 kHz. The above arrangement enables the tracking of the amplitude of height changes in the collision angle, which is above / below 10 degrees between the upper and lower crown pairs with M1 and / or M2 markers, within a set time unit, divided into time intervals, preferably 0.001 seconds. Along the path of each movement phase / chewing cycle, the number of vibrations of the tactile manipulator during the set time unit represents the contact / collision moments of these crown pairs with M1 and / or M2 markers. The pattern on the crown of the natural / artificial tooth positioned on the implant consists of two separable components, including a prefabricated external component that extends out of the mouth and an internal component.The external component has at least three markings at its tip. The internal component is individually designed and customized to fit the veneer surface of the patient's tooth crowns. The digital chewing recorder, located within a single housing, simultaneously records the three-dimensional shape of the face from either the right or left side. Two sets of cameras are located at the two ends of the arched opening, independently or simultaneously recording both sides of the patient's mouth and face, as well as the visual markings M1 and / or M2 fixed to the crowns of the upper and lower teeth. Each camera set includes three cameras spaced at predetermined distances. Each set has two monochrome or color cameras with a maximum resolution of 2.3 Mbps and a high frame rate of at least 1000 FPS, equipped with dedicated optics / lenses, and one color camera with a minimum resolution of 12 Mbps.

A mandible adjustment device comprises an upper teeth brace and a lower teeth brace wherein the upper teeth brace and the lower teeth brace have an upper teeth accommodation space and a lower teeth accommodation space, respectively: the upper teeth accommodation space and the lower teeth accommodation space are developed according to a user's dental pattern for matching a human being's maxillary dental arch and mandible dental arch, respectively; the upper teeth brace and the lower teeth brace laterally extend a mucosa protection device opposite to an upper molar area and a positioning part opposite to a lower molar area, respectively. The upper teeth brace and the lower teeth brace, both of which have been installed, drive the positioning part and the mucosa protection device to combine each other and keep a flexible displacement space for neither discomfort at a condyle of the mandible.

The application discloses a method, device and equipment for establishing a virtual jaw frame, acquires a medical image of a patient, determines anatomic related mark points and upper and lower dental arch key points from the medical image, establishes a virtual cranial maxillary coordinate system and a mandibular coordinate system according to the anatomic related mark points, and determines the positions of the upper and lower dental arch key points in the coordinate system. The upper dental arch key points in a laser scanning tooth model of the patient are aligned with the same key points in the cranial maxillary coordinate system, and the laser scanning tooth model is added to the cranial maxillary coordinate system. The lower dental arch key points in the laser scanning tooth model are aligned with the same key points in the mandibular coordinate system, and the laser scanning tooth model is added to the mandibular coordinate system. Any point in the upper and lower dental arches in the laser scanning tooth model can be found in the corresponding position in the cranial maxillary coordinate system or the mandibular coordinate system, a highly personalized virtual jaw frame is established in a digital way, and the real situation of the patient is simulated in the morphological aspect to the maximum extent.

In CT visualization software, zones of the right and left temporomandibular joints (TMJs) are visualized sequentially. In a frontal plane, each of the condylar processes of the TMJs are delimited into sections. In a sagittal plane, separate 3D contours of the fossae and the condyles of the TMJs are created. The contours of the condyles are combined with a 3D model of the mandibular teeth, and a 3D model of the mandible with the teeth and the condylar processes is obtained. The contours of the fossae are combined with a 3D model of the maxillary teeth, and a 3D model of the maxilla with the teeth and the contours of the glenoid fossae is obtained. The 3D scene objects obtained are distributed according to side and identification code, and precise tracking of the movement of the condyles and the fossae of the TMJs during movement of the mandible is provided.

An intraoral device includes a splint, an array of electrodes, a controller, and a sensor. The splint is configured to fit mandibular teeth. The array of electrodes is coupled to the splint. The array is aligned on a medial plane and proximal to a distal portion of the splint. The controller is coupled to the array. The controller is coupled to a power supply. The sensor is coupled to the controller and coupled to the splint. The sensor is configured to provide a measure of moisture.

Mandibular repositioning devices providing downward movement as well as forward movement of the mandible have a maxillary tooth covering having a driver flange protruding laterally outward on one or both sides thereof and have a mandibular tooth covering having a protrusive flange extending cranially therefrom positioned to have a posterior side engaged with the anterior side of each driver flange. The anterior side of each driver flange has a convex curvature. The posterior side of each protrusive flange has a concave-to-convex curvature positioned to move the convex portion thereof along the convex curvature of the driver flange when the mouth opens, which also moves the mandible forward. A plateau of a preselected height, which prevents disconnect between each protrusive flange and its respective driver flange relative to a fully open mouth measurement, is present between the base of the protrusive flange and the tooth covering.

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.

One aspect of this application provides a dental instrument comprising a first occlusal module in the form of a U-shaped elongated solid, which is recessed on one side near a first dentition to form a first tooth receiving cavity for receiving a second dentition. The first dentition is a maxillary or mandibular dentition, and the first and second dentitions are opposing dentitions. A first protruding feature is provided within the first tooth receiving cavity. When the dental instrument is in place, the first protruding feature engages with the second dentition to enhance the retention of the second dentition within the first tooth receiving cavity.

The utility model discloses a kind of oral cavity anterior tooth reverse V-shaped corrector, comprising: base plate, it is U-shaped and its outer end is equipped with first lip arch and second lip arch being set up upside and downside, the middle position of base plate is equipped with expander and the top surface of its outer end is equipped with several push spring for promoting maxillary teeth to outside;Tongue grid, it is used to separate tongue and mandibular teeth, and tongue grid is fixed on the bottom surface of the outer end of base plate;Two arrowhead clasp, it is used for the fixation of maxillary upper base plate, two arrowhead clasp are respectively fixed on the two ends of inner end of base plate, and two arrowhead clasp are symmetrically set relative to base plate left and right. The utility model can reduce the pushing strength of tongue to mandibular teeth, strengthen the pushing correction strength to maxillary teeth, thereby guarantee the use effect of corrector.

On one hand, the utility model provides a dental instrument which is U-shaped, the upper side of the dental instrument is provided with a cavity for accommodating the upper jaw dentition of a patient, the lower side of the dental instrument is provided with a cavity for accommodating the lower jaw dentition of the patient, the dental instrument comprises a first section and a second section which are connected along the front-back direction, and the upper side and the lower side of the dental instrument are folded at the first section; the upper side and the lower side of the dental instrument are forked on the second section in the direction from the first section to the second section, and under the action of occlusal force of a patient, the forked part between the upper side and the lower side of the second section of the dental instrument can be reduced, so that rebounding force generated by elastic deformation can lower corresponding teeth of the patient.

The invention relates to a designing and manufacturing method of an orthodontic surgery occlusion guide plate based on an invisible orthodontic device, which comprises the following steps: performing CT scanning on a patient, collecting three-dimensional data of craniomaxillofacial and teeth, preparing for obtaining three-dimensional virtual tooth data of the patient by manufacturing an anhydrite tooth model, importing the data of the patient into craniomaxillofacial surgical operation planning software, and finally, designing and manufacturing the orthodontic surgery occlusion guide plate based on the invisible orthodontic device. The method comprises the following steps: establishing a cranio-jaw virtual model of a patient, performing three-dimensional scanning on a manufactured anhydrite tooth model to obtain dentition data, determining a target position of a lower jaw tooth bone section based on an end occlusion relationship through a simulation operation on the virtual cranio-jaw model, importing the dentition data of the patient into three-dimensional virtual design software, performing Boolean operation, and determining a target position of a lower jaw tooth bone section. The orthognathic operation occlusion guide plate is manufactured by using a three-dimensional printing technology, the anterior tooth area is not fully covered, the resistance and difficulty during dislocation and in-position are reduced, the operation time is saved, the observation window is arranged, the situation that the dentition is not in place is avoided, and the operation precision is ensured.

The present application provides a kind of shell dental instrument, including the first shell body of at least partial accommodation maxillary teeth and the second shell body of at least partial accommodation mandibular teeth, the first shell body is provided with the first protruding portion of adjusting the upper and lower jaw position relationship in the region between canine and molar in the direction of opposite jaw, the second shell body is provided with the second protruding portion of matching adjusting the upper and lower jaw position relationship in the region between canine and molar in the direction of opposite jaw;First reinforcing member is provided on the first protruding portion, second reinforcing member is provided on the second protruding portion, the outer surface of the first reinforcing member and the outer surface of second reinforcing member have concave-convex matching structure;When the first shell body and the second shell body interact, the first reinforcing member and the second reinforcing member relative sliding guide upper and lower jaw to the preset occlusal position, the present application also provides a kind of dental treatment system, dental instrument design method and preparation method.

A digital intermaxillary relationship recording device for denture fabrication is disclosed, which completes the acquisition of intermaxillary relationships necessary for denture fabrication during the patient's first visit, determines the aesthetic position of the anterior teeth using a facial scanner, and allows for the accurate fabrication and provision of dentures on the same day or in two visits. One aspect of the present invention of the digital intermaxillary relationship recording device for denture fabrication includes a maxillary plate on which impression material is provided on the upper surface so as to be able to acquire an impression of the maxillary gums, a mandibular plate on which impression material is provided on the lower surface so as to be able to acquire an impression of the mandibular gums, and an anterior tooth guide member which can be detachably coupled to the anterior end of the maxillary plate, can acquire an index relationship with the lips after coupling, and can reproduce the aesthetic position of the anterior teeth via a facial scanner in the coupled state.

This invention discloses a virtual fitting system for dental prostheses based on 3D scanning, belonging to the field of digital dental prosthodontics. It includes a data acquisition module, a trajectory processing module, a model construction module, a fitting simulation module, and an anomaly optimization module. Through 3D scanning and automated point cloud processing, it can quickly acquire high-precision 3D models of the maxillary and mandibular dentition, providing reliable data support for prosthodontic design. Optical motion capture fully reproduces the patient's physiological mandibular movements, overcoming the limitations of existing systems that can only perform static simulations, making occlusal detection more clinically accurate. A unified reference coordinate system is established to achieve precise model registration, controlling prosthodontic positioning errors within 0.01mm, significantly improving fit. It can automatically identify premature contacts and occlusal interferences and perform intelligent optimization of the occlusal surface, replacing repeated manual adjustments, effectively shortening the treatment cycle, improving prosthodontic accuracy and wearing comfort, and enhancing the overall treatment experience.

The utility model discloses an invisible orthodontic appliance convenient to correct and lock, which relates to the technical field of orthodontics, and comprises an upper jaw tooth socket, a lower jaw tooth socket and a lock catch fixedly arranged on one side of a second molar deviating from a gum, the upper jaw tooth socket and the lower jaw tooth socket are both provided with cantilevers, the cantilevers are positioned on one side of the second molar far away from the lock catch, and the lock catch is fixedly arranged on the upper jaw tooth socket and the lower jaw tooth socket. The cantilevers and the lock catches on the two sides of the same second molar are connected through elastic pieces. The problem that in the existing malformation correction process, it is difficult to provide a vertical space for further correction of a second molar lock, so that the height in the vertical direction is relatively insufficient, and correction failure is increased is solved.

The utility model discloses a silica gel tooth appliance, including occlusion, labial and buccal stop and tongue stop, the whole occlusion is U shape setting, including corresponding first occlusion of anterior tooth area tooth setting, corresponding second occlusion of premolar setting and corresponding third occlusion of first molar setting, the left and right sides of first occlusion are connected second occlusion and third occlusion in proper order respectively, and first occlusion and second occlusion and third occlusion all include corresponding maxillary bearing surface of maxillary tooth and corresponding mandibular bearing surface of mandibular tooth respectively, when wearing, the maxillary bearing surface of first occlusion exerts a pressure on the tooth to be pressed down, and the mandibular bearing surface of first occlusion and mandibular anterior tooth area tooth form elongation space, the maxillary bearing surface and mandibular bearing surface of second occlusion contact with maxillary premolar and mandibular premolar respectively, and the maxillary bearing surface of third occlusion and maxillary first molar form eruption space.

One aspect of this application provides a dental instrument comprising: a first shell-like body, which is an integral shell forming a cavity for receiving a patient's first dentition, the first shell-like body being configured such that a partial surface of the lingual or labial / buccal side of the first tooth is exposed on the first shell-like body, the first dentition being the maxillary or mandibular dentition; a second shell-like body, which is an integral shell forming a cavity for receiving the patient's second dentition, the second dentition being the opposing dentition of the first dentition; a first anchoring attachment protruding from the first or second shell-like body; a second anchoring attachment mounted on the partial surface of the first tooth exposed on the shell-like body; and an elastic member that mechanically engages with the first and second anchoring attachments to elastically deform, thereby applying an orthodontic force to the first tooth through the second anchoring attachment.

The invention discloses a series of osteotomy guide plates for condylar osteotomy and a manufacturing method of the series of osteotomy guide plates, and relates to the technical field of medical instruments. The manufacturing method comprises the following steps: manufacturing an anhydrite tooth model; establishing a virtual three-dimensional cranio-jaw model; acquiring virtual dentition data, and replacing the dentition data in the three-dimensional data with the virtual dentition data; determining a target position of the mandibular dental bone section; planning and virtually designing osteotomy lines for coracoid resection and condyle resection, virtually resecting coracoid and condyle on the affected side, and virtually designing temporal-mandibular joint reconstruction on the affected side to obtain a three-dimensional model of the ascending branch on the affected side; drawing a coracoid osteotomy guide plate; drawing a condylar osteotomy guide plate based on the form of the mandible and the position of an osteotomy line; and three-dimensionally printing the guide plate. By the adoption of the method, the guide plate can be fixed through the shape of the guide plate, additional fixing measures are not needed, the operation difficulty is lowered, the operation time is shortened, and the precision of the condylar process resection is improved; and the possibility of design errors caused by multi-data matching fusion in the digital design process is reduced.

The invention belongs to the field of oral cavity health care, and particularly relates to a disposable multi-specification child fluorine-coated denture and a preparation method and application thereof.The disposable multi-specification child fluorine-coated denture comprises an upper denture body and a lower denture body which are used for maxillary teeth and mandibular teeth respectively, and the upper denture body and the lower denture body are of split structures which are separated from each other; each denture is provided with a U-shaped groove matched with the dentition form of a child, and a preset dosage of fluorine-containing coating agent is preloaded in each U-shaped groove; the upper denture and the lower denture are both made of flexible medical high polymer materials, and a peelable sealing film covers an opening of the U-shaped groove; the upper denture and the lower denture are designed into different specifications and models according to the dental arch sizes of children of different age groups, and the split type design is combined with a multi-specification system, so that the denture can better adapt to the oral cavity characteristics of children of different age groups, and the contact efficiency of a fluorine agent and a dental surface in the fluorine coating process is improved.