43 results about "Maxillary Bones" patented technology

A kit for dental applications includes a tubular body provided with an internal duct which is open to the outside at respective ends of the body; a first end defines a cavity adapted to accommodate a terminal portion of a pin which can be coupled to a maxillary bone tissue.The kit further includes at leasta retention ring, which has a radial cut and can be accommodated in the cavity, which is shaped complementarily; the retention ring s configured to allow the introduction of the terminal portion of the pin into the cavity and to hinder its accidental egress. The kit also includesa release tool, having a shank with a first longitudinal segment, which is terminal and can be inserted with play into the duct, and a second longitudinal segment, which is threaded and can engage a female thread provided along the internal wall of the duct.

The invention provides an oral implant operation registration method and system, and the method comprises the steps: obtaining first CBCT data and second CBCT data, a registration device is provided with a plurality of groove points, and the second CBCT data is provided with an image coordinate system; arranging an optical tracking array on the dental region, and determining a first transformation matrix between a binocular camera coordinate system and a dental jaw bone reference coordinate system through a binocular camera; determining a first pose matrix of the needle point of the drill needle in the planting mobile phone coordinate system; the tip of the optical probe and the binocular camera are utilized to perform sampling operation on each groove point on the registration device to obtain a plurality of registration points; determining a second transformation matrix according to the plurality of registration points and each groove point; and determining a second pose matrix according to the first transformation matrix, the second transformation matrix, the first pose matrix and a transformation matrix between the coordinate system of the binocular camera and the coordinate system of the implant mobile phone, and preparing a hole in the dental region through the tip of the drill point. By adopting the scheme, the planting precision of the implant can be improved.

A facemask and accessories which overcomes the adverse effects and limitations of current designs by moving the maxilla and mandible in forward direction, which assists in correcting maxillary and mandibular skeletal and dentoalveolar deficiency and help expand the upper airway by advancing the mandible. This is accomplished by a design that is supported only by forehead and produces forces in front of maxilla and mandible. The extra-oral facebow design is characterized by providing two independent force adjustments, one above the forehead and the other one in front of the face by attachments to the upper and lower jaw bones and teeth. In particular, the two independent adjustments are provided by a fully adjustable forehead pad and bilateral adjustable bows on opposite sides of the facebow's extra-oral frame to provide protracting forces.

A maxilla holder includes a base plate and a connecting member. One end of the connecting member is connected with the base plate which extends along a pre-designed occlusal plane while the other end of the connecting member includes at least two supporting portions. With the supporting portions abutting against the cranium, the base plate is positioned so that the maxilla is located in a pre-planned position once it is moved onto the base plate.

The present invention is oral device that inhibits mastication and ingestion of solid food while minimizing intrusiveness and discomfort in other oral activities. This device is ideal for individuals following an all-liquid diet without relying on willpower alone. The oral device allows a full range of motion of the jaw and the wearer keeps the ability to open and close the mouth, allowing all oral functions other than chewing and swallowing solid food. In various embodiments of the invention, the oral device comprises a set of retainers worn over teeth or retainer bars bonded to, or integrated as part of the retainers. A set of flexible mastication barriers coupled to the retainers or retainer bars and extending from mandible to the maxilla on the lingual side of the mouth inhibit the movement of solid food to the occlusal surfaces of the posterior teeth for chewing. An artificial intelligence platform is implemented to improve fabrication of the oral device and predict and eliminate undercuts in the retainers or retainer bars.

The utility model discloses a complete denture teaching aid. An upper jaw bone and a zygomatic arch are integrally connected, and the upper jaw bone and a lower jaw bone are oppositely arranged at intervals; the upper false tooth is detachably connected with the upper jawbone, and the lower false tooth is detachably connected with the lower jawbone; the two telescopic pieces are fixedly connected to the side portion of the zygomatic arch and the side portion of the mandible respectively, and the fixed ends of the two telescopic pieces are connected to the periphery of the outer side of the zygomatic arch and the top of the outer side of the mandible respectively. The adjusting parts are arranged among the corresponding telescopic parts, the zygomatic arch and the mandible in a suspended mode, and the adjusting parts are fixedly connected with the movable ends of the corresponding telescopic parts respectively. The upper jawbone is integrally connected with the zygomatic arch and is arranged opposite to the lower jawbone at an interval, and the upper jawbone and the lower jawbone in a real oral cavity are simulated. The upper false tooth and the lower false tooth are detachably connected to the upper jawbone and the lower jawbone respectively and are used for simulating and replacing missing teeth. The stretching length and angle of the telescopic piece are controlled through the adjusting piece, and the relative distance and position relation between the maxilla and the mandible are adjusted, so that the alignment process of the maxilla and the mandible is displayed in real time.

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.

A maxilla holder includes a base plate and a connecting member. One end of the connecting member is connected with the base plate which extends along a pre-designed occlusal plane while the other end of the connecting member includes at least two supporting portions. With the supporting portions abutting against the cranium, the base plate is positioned so that the maxilla is located in a pre-planned position once it is moved onto the base plate.

The method for creating a digital 3D model of a patient's dentition according to the present invention comprises, in a computing unit, generating a digital 3D model of a plurality of dentition variations, each of which comprises a combination of a digital 3D model of the patient's upper jaw and a digital 3D model of the patient's lower jaw, the plurality of dentition variations differing from one another in the relative positioning of the upper and lower jaws, respectively: - a digital 3D model of the patient's maxilla is combined with a digital 3D model of the mandible such that the maxilla and mandible rest on top of each other at several contact points without any spatial overlap of parts of the maxilla and mandible; - The contact surfaces between the upper and lower jaws are determined, This results in an optimized denture variation being selected for the 3D model of the denture, taking into account the contact surfaces.

The invention discloses an adjustable guide system (1) for positioning dental implants that comprises: a tool (2) having a head (21); a drill bit (3) configured to be attached to the head (21); a set of bushings (4) configured to be attached to the head (21); and a splint (5) having an anatomical shape configured to abut against the maxillary bone of the patient, wherein the splint (5) comprises at least one guide hole (51) for the bushings (4). Furthermore, the attachment between the actuation head (21) and the bushing (4) is configured to give the bushing (4) at least two working positions separated from one another in a longitudinal direction. This attachment is preferably implemented by means of a bayonet connection or a special threaded connection.

The invention discloses a maxillary bone reduction guide plate for orthognathic surgery secondary operation, and relates to the technical field of oral and maxillofacial surgery medical auxiliary instruments, the maxillary bone reduction guide plate comprises a left side guide plate and a right side guide plate, the left side guide plate and the right side guide plate are configured to be capable of being attached to bony structure surfaces on the two sides of a patient's maxillary bone pear-shaped hole respectively, the left guide plate and the right guide plate are each provided with at least one nail hole used for being fixed to the bone surface. The left side guide plate and the right side guide plate are attached to the bone walls of the maxillary frontal process and the maxillary alveolar process to achieve in-place and fixation, so that resetting of the maxillary osteotomy block is guided, the structure is simple, use is convenient, the accuracy and reliability of the secondary orthognathic operation are effectively improved, and pain of a patient is effectively relieved.

A method for creating a digital 3D model of a patient's dentition, according to the invention, provides that in a computing unit for a plurality of dentition variants, each comprising a combination of a digital 3D model of the upper jaw and a digital 3D model of the lower jaw of the patient, which differ from each other in the relative positioning of the upper and lower jaws, respectively:the digital 3D model of the upper jaw is combined with the digital 3D model of the patient's lower jaw in such a way that the upper and lower jaws rest on each other at a number of contact points without any spatial overlap of parts of the upper and lower jaws, andthe contact surface between the upper and lower jaw is determined, whereby an optimized denture variant is selected as a 3D model of the denture, taking into account the contact surface.

There is proposed an adjustable bite block for a patient's mouth for use during a medical or surgical procedure. The adjustable bite block includes an upper portion for engaging the teeth of a maxilla of the patient, and a lower portion for engaging the teeth of a mandible of the patient. The upper portion and / or lower portion has at least one passageway therebetween or therethrough, and the lower portion is adjustably connected to or adjacent the upper portion, to facilitate the movement of the mandible to thereby adjust the patient's airway. An adjustment member is connected or coupled to the lower portion of the bite block, and accessible from an exterior of the patient's mouth during use. The adjustment member is configured to move the lower portion relative to the upper portion to thereby move the mandible of the patient between a rest position and a forward thrust position.

This invention discloses a teaching device for manual reduction of temporomandibular joint dislocation, comprising a base plate on which a lifting and adjusting assembly is mounted. A skull model is mounted on top of the lifting and adjusting assembly. The skull model has a temporalis muscle spring assembly between the temporal bone and coronoid process, a masseter muscle spring assembly between the zygomatic arch and the lateral surface of the lower border of the mandibular angle, a medial pterygoid muscle spring assembly between the posteromedial aspect of the maxillary tuberosity and the medial surface of the lower border of the mandibular angle, and a lateral pterygoid muscle spring assembly between the articular pterygoid fossa and the lateral pterygoid plate at the condylar neck. In this invention, the skull model can rotate on top of the lifting and adjusting assembly, allowing the device to visually display the temporomandibular joint and the mandibular elevating muscles closely related to joint dislocation, simulating the movement of muscles inside the oral cavity, thus realistically simulating the force resistance against the mandibular elevating muscles during temporomandibular joint reduction. Furthermore, the device allows for angle adjustment to accommodate students in different positions.

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.

The invention provides a mandible defect reconstruction method and device. The method comprises the following steps: acquiring to-be-processed CT (Computed Tomography) data; the to-be-processed CT data comprises CT data of a defective mandible; inputting the to-be-processed CT data into a pre-trained jaw segmentation model, and extracting three-dimensional structures of a mandible, an upper jaw and teeth from the to-be-processed CT data to obtain target three-dimensional data; inputting the target three-dimensional data into a pre-trained jaw reconstruction model, and performing defect completion on the target three-dimensional data to obtain completed target three-dimensional data; wherein the jaw segmentation model is obtained by training marked CT data samples based on a neural network; the jaw reconstruction model is obtained by training a mandible three-dimensional data sample segmented by a computer based on a neural network. According to the method, the jaw segmentation model is used for segmenting the CT data, the jaw reconstruction model is used for reconstructing and complementing the segmented data, the universality is good, and the precision is high.

A maxilla holder includes a base plate and a connecting member. One end of the connecting member is connected with the base plate which extends along a pre-designed occlusal plane while the other end of the connecting member includes at least two supporting portions. With the supporting portions abutting against the cranium, the base plate is positioned so that the maxilla is located in a pre-planned position once it is moved onto the base plate.

The invention discloses a maxillary osteotomy positioning and fixing suite, and relates to the technical field of oral maxillofacial surgery orthognathic surgery, the maxillary osteotomy positioning and fixing suite comprises two osteotomy guide plates, an occlusal plate and a plurality of titanium battens, one end of each osteotomy guide plate is used for being clamped with a piriform nest, the other end of each osteotomy guide plate is used for being clamped with a zygomatic alveolar ridge, and the osteotomy guide plates are provided with a plurality of first nail holes; the first nail holes correspond to reserved nail holes of the maxillary bone so that the titanium nails can penetrate through the first nail holes and enter the reserved nail holes to fix the osteotomy guide plate in an operation area, the osteotomy guide plate is provided with an osteotomy groove, and the osteotomy groove is used for osteotomy operation to complete osteotomy and dissection of the maxillary bone; the biteplate is placed between the occlusal surfaces of the upper jaw and the lower jaw so as to guide the primary restoration of the osteotomy block; a plurality of second nail holes are formed in the titanium batten, and the second nail holes correspond to the reserved nail holes so that the titanium nails can penetrate through the second nail holes and enter the reserved nail holes to complete final reduction of the maxilla and fixation of the osteotomy block. The device is simple in structure and convenient to use, effectively reduces operation time and injury, and effectively improves operation efficiency.

A device for measuring parameters associated with concussions due to impacts to the head of a person using a mouthpiece with a sensor that is configured to contact one or more bones of a person's face, such as the maxilla bone. The device may include a number of inflatable air pockets to aid in retaining the position of the sensor. The device may further include a sensor that contacts the exterior of a person's cranium and a communication module for transmitting the sensor readings. The device may be hinged in such a way that users may still easily talk and breathe.

The utility model discloses a high-flow humidification oxygen therapy nasal catheter which comprises an air inlet pipe head, the air inlet pipe head comprises an adjusting section and connecting sections located on the two sides of the adjusting section, the adjusting section is a corrugated pipe, a nasal oxygen head and an adjusting block are symmetrically arranged on the adjusting section, and a rotating hole is eccentrically formed in the adjusting block. The connecting section penetrates through the adjusting block and is rotationally connected with the adjusting block, the adjusting block is used for abutting against the human body and supporting the connecting section, and the adjusting block rotates relative to the connecting section to adjust the supporting position of the connecting section relative to the human body; the elastic band is connected with the air inlet pipe head and used for being fixed to the human body, the distance, the insertion angle and the insertion depth between the nasal oxygen heads can be adjusted through the corrugated pipe and the adjusting block, then the nasal oxygen head can adapt to the nasal cavity interval and maxilla protrusion conditions of different people, and meanwhile overall adjustment is convenient, the structure is simple, and use is convenient.

This product is an instrument used to take a bite registration by making an impression of the teeth, alveolar region, and palate shape in the patient's mouth using an impression material. For example, as shown in Reference Figure 1, which shows the usage state, by using this product, it is possible to easily take a bite registration using an impression material. In addition, as shown in Reference Figure 2, which shows the usage state, two products, one for the upper jaw and one for the lower jaw, can be used in combination.

Disclosed herein are novel methods, devices, and systems for facilitating and / or accelerating movement and / or alignment of teeth by using radiofrequencies such as X-rays. Specifically disclosed is a morphogenetic bone accelerator (MBA) comprising two segments, an upper segment that is configured to cover the upper arch (or maxilla) of a patient's mouth, and a lower segment that is configured to cover the lower arch (or mandible) of the patient's mouth. Both the upper and the lower segments of the MBA comprise a metal wire surrounded by a soft body. The wire conducts or translates benign radiation emitted from a radiation emitting device into a patient's mouth. Such radiation may be low-energy surface X-rays (e.g., having a radiation power range of between 10 and 100 kilovolts (kV)) and / or medium and deep X-rays (e.g., having a radiation power range of between 120 and 200 kV).

The application discloses a medicine injection method for killing camel head fly larvae parasitizing in the nasal cavity of a bactrian camel. A pair of non-bony structures similar to a triangle and the size of a thumb are arranged at the joint of nasal bone, maxillary bone and frontal bone. The pair of non-bony structures are at the same horizontal level with the eye socket of the bactrian camel, are located at the intersection of the inner corner of the eye and the upper edge of the eye socket, and are away from the eye socket by 4-5 cm. After a syringe is vertically inserted into 2-3 cm at the site, the needle of the syringe can reach the medial part of the concha nasalis. After the site is inserted into 2.5-3 cm in the clockwise direction and is inclined by 45 degrees, the needle can reach the lateral part of the concha nasalis. The medicine injection method can directly inject the insect killing medicine to the parasitizing position of the first instar larvae, and the purpose of killing the first instar larvae is achieved. The medicine injection method provides a new method for killing the first instar larvae in the overwintering period, and can reduce the economic loss of the camel raising industry caused by the nasal fly maggot disease.

A facemask and accessories which overcome the adverse effects and limitations of current designs by moving the maxilla and mandible in forward direction, which assists in correcting maxillary and mandibular skeletal and dentoalveolar deficiency and help expand the upper airway by advancing the mandible. This is accomplished by a design that is supported only by forehead and produces forces in front of maxilla and mandible. The extra-oral facebow design is characterized by providing two independent force adjustments, one above the forehead and the other one in front of the face by attachments to the upper and lower jaw bones and teeth. In particular, the two independent adjustments are provided by a fully adjustable forehead pad and bilateral adjustable bows on opposite sides of the facebow's extra-oral frame to provide protracting forces.

A device for measuring parameters associated with concussions due to impacts to the head of a person using a mouthpiece with a sensor that is configured to contact one or more bones of a person's face, such as the maxilla bone. The device may include a number of inflatable air pockets to aid in retaining the position of the sensor. The device may further include a sensor that contacts the exterior of a person's cranium and a communication module for transmitting the sensor readings. The device may be hinged in such a way that users may still easily talk and breathe.

A device includes a linear actuator (80A), a lower jaw (65A), and an upper jaw (66A). The linear actuator is configured for movement in an axial direction in response to an applied force. The lower jaw and the upper jaw are coupled to the actuator. The upper jaw is coupled to the lower jaw by a first joint (31A).The lower jaw and upper jaw are configured to articulate about the first joint in response to a position of the linear actuator. The lower jaw includes a lower face having a projection radiating from the first joint. The upper jaw includes an upper face having a thrust surface (70A) aligned tangential to the first joint.

1. The name of the design product: Absorbable bone plate. 2. The use of the design product: Used for the connection and fixation of the fracture of craniofacial and other non-weight-bearing parts of the body (such as maxilla, orbital bone, nasal bone, zygomatic bone, zygomatic arch) and other parts. 3. The design points of the design product: The combination of shape and pattern. 4. The picture or photo that best indicates the design points: front view.

The present invention relates to a palatal expander equipped with a molar distalization means for expansion of the maxillary bone and distal retrusion of the maxillary molars. In particular, the present invention is configured such that molar distal retrusion is possible during a maintenance period of three to four months after expansion of the maxillary bone, the distalization means can be easily mounted on the palatal expander through assembly without silver soldering or laser welding, and same can be easily connected after adjustment according to the height differences of the molars of patients.

This product is an instrument used to take a bite registration by making an impression of the teeth, alveolar region, and palate shape in the patient's mouth using an impression material. For example, as shown in Reference Figure 1, which shows the usage state, by using this product, it is possible to easily take a bite registration using an impression material. In addition, as shown in Reference Figure 2, which shows the usage state, two products, one for the upper jaw and one for the lower jaw, can be used in combination.

The present invention is an adjustment means for a mandibular advancement device. The mandibular advancement device being of the type having both intraoral and extraoral portions, including a body portion that is at the interface between the intraoral and extraoral portions and thereby is part intraoral and part extraoral. The extraoral portion includes a lower arm that is substantially straight and extends directly outwardly from the extraoral part of the body portion, and a curved upper arm that curves upwardly from the lower arm and back towards the face of a person using the device. The posterior end of the upper arm includes a pad assembly that is adapted to make contact with, and apply pressure to, the subnasal maxillary bone of the wearer. A substantial portion of the lower arm is engageable with motorised means that are encapsulated within the body portion and are adapted to engage with the lower arm and cause it to slide further out of, or slidably retract further into, the body portion.