18 results about "Tooth movement" patented technology

This invention discloses an auxiliary method for orthodontic treatment planning based on a digital twin of tooth movement, belonging to the field of orthodontic auxiliary technology. The method includes acquiring cone-beam computed tomography (CBCT) data of the patient's oral cavity and three-dimensional point cloud data of the tooth crown surface to construct a three-dimensional geometric model of the tooth-periodontal ligament-alveolar bone. The three-dimensional geometric model is discretized into a finite element mesh, and based on the patient's age, periodontal biotype, and CT grayscale value, periodontal ligament viscoelastic parameters, alveolar bone grayscale-mechanical mapping parameters, and tooth linear elastic constants are assigned to form an individualized digital twin of tooth movement. A target displacement vector is determined within the individualized digital twin of tooth movement, and the orthodontic force vector and anchorage requirement index are calculated. The anchorage requirement index is used to assist in the design of the orthodontic treatment plan. This invention can effectively improve the accuracy, predictability, and personalization of orthodontic treatment plan design, reduce reliance on experience, and optimize the overall treatment effect.

The present disclosure discusses systems and methods for altering the position of teeth in a subject with an aligner. In an embodiment, a method of rotating a tooth includes attaching two engagers to the tooth and creating a force against the tooth, from contact of the aligner with the engagers, to cause rotation of the tooth. Additionally method can also be used for extrusion of a tooth. In an embodiment, a method of extrusion of a tooth includes attaching two engagers to the tooth, on opposing sides of the tooth, and creating a force against the tooth, from contact of the aligner with the engagers, to cause extrusion of the tooth.

The present invention relates to a set of tooth-and-jaw position adaptation apparatuses for the step-by-step, precise and controlled correction of tooth and / or jaw misalignments. For this purpose, each adaptation apparatus comprises an upper component for the upper jaw and a lower component for the lower jaw, which are non-detachably connected to one another. The apparatus has individual chambers for fixing selected teeth or groups of teeth and specifically arranged free spaces in the form of mechanical recesses, which allow a biomechanically assisted movement of the teeth from a misalignment into the correct position. The forces exerted on the teeth can be adjusted in all three spatial dimensions in terms of strength, direction and duration of action, thus ensuring controlled and precise control of the tooth movements. Each movement is possible in a targeted manner and at the same time without loss of anchoring, including occlusion adjustment, i.e. bite adjustment, at the same time, i.e. without so-called side effects..

The dental robot includes a platform and a suspension system. The suspension system supports the platform and automatically compensates for the weight of the platform, as well as the robotic arm, end effector, and tooth clamp attached to it. The suspension system maintains a constant height of the platform above the base when there is no external force on the tooth clamp. The suspension system allows the platform's position and orientation to change relative to the base in response to external forces greater than approximately 0.1 N on the tooth clamp, such as the result of movement of the object (changes in position and / or orientation). As a result, the platform's position and orientation remain fixed relative to the object's teeth in response to tooth movement.

This utility model relates to a self-ligating bracket, comprising a bracket body, the bracket body having a base plate, an archwire groove, and a sliding locking plate. The sliding locking plate, in the locked state, has a locking plate cover that covers the archwire groove. The locking plate cover has a predetermined shape to minimize its contact area with the archwire, thereby reducing friction between them. This invention, on the one hand, reduces friction to achieve efficient tooth movement under light force orthodontic treatment. Furthermore, due to its large groove space, it allows for simultaneous closure of extraction gaps and alignment under double archwire conditions, significantly shortening treatment time. On the other hand, this self-ligating bracket also allows for full archwire deformation under ligation, achieving efficient tooth control and thorough tooth alignment.

This invention discloses a distributed sensing-based invisible orthodontic monitoring system and method, relating to the field of oral medicine technology. The system includes a data acquisition module, a model construction module, a model update module, a root-bone relationship assessment module, a treatment plan adjustment module, and a brace generation module. It uses embedded flexible thin-film pressure sensors to collect pressure data on the contact surfaces between the braces and teeth in real time. Combined with biomechanical equations, it dynamically updates the tooth, gingiva, and alveolar bone models, assesses the root-bone relationship safety factor in real time, and automatically adjusts the treatment plan based on the deviation between the actual and expected positions. Finally, it uses selective laser sintering to print the next stage of the braces. This invention achieves continuous monitoring of tooth movement, dynamic assessment of root-bone relationships, and closed-loop adjustment of the treatment plan, significantly improving the safety and efficiency of orthodontics.

An attachment that effectively reduces the incidence of undercut and improves the overall efficiency of tooth movement includes an attachment body with a gingival portion and a vertical portion. The vertical portion includes a mesial portion located mesially to the crown and a distal portion located distally to the crown. The gingival portion is close to the gingival margin and located slightly below the undercut of the crown. Both the gingival portion and the vertical portion have opposing lingual and buccal surfaces, opposing occlusal and gingival surfaces, and opposing mesial and distal surfaces. The lingual surface is bonded to the tooth surface. The gingival, occlusal, mesial, and distal surfaces are all arc-shaped or spherical. This structural design not only greatly increases the undercut of the tooth but also provides multiple contact areas and a larger force application area with the orthodontic appliance, providing more effective coverage area for mesial or distal tooth movement. This effectively reduces the incidence of undercut and improves the overall efficiency of tooth movement.

Methods and apparatus (including software) for determining and / or locating dental ridges may include identifying patterns corresponding to the locations of two or more ridge points of a single tooth in a 3D model of a patient's dentition, and determining the tooth ridge based on the identified patterns corresponding to the locations of said two or more ridge points. The determined dental ridges can be used to determine dental treatment planning. Methods and apparatus for identifying and quantifying reciprocating tooth movement in treatment planning are also described herein. Reciprocating tooth movement can be used as a basis for adjusting treatment planning by reducing the amount of reciprocating movement or eliminating reciprocating movement from the treatment plan.

This invention belongs to the field of orthodontic instrument technology, specifically a periodontal targeted near-infrared light bimaxillary therapy device that protects tooth crowns. It includes a protective brace and a bimaxillary irradiation device. The protective brace includes a maxillary protective brace and a mandibular protective brace, each comprising a lingual plate and a labial plate. The labial plate includes a cervical sleeve and a receiving groove. The bimaxillary irradiation device includes an outer irradiation plate, an inner irradiation plate, and a flexible occlusal plate. Near-infrared laser lamps are installed on the outer and inner irradiation plates. This invention achieves simultaneous irradiation of the labial and lingual periodontal tissues of both jaws, significantly improving orthodontic efficiency. It can simultaneously irradiate the entire periodontal area of ​​both jaws in a single treatment, eliminating the need for separate upper and lower jaw procedures, shortening treatment time, achieving simultaneous activation of all periodontal tissues, and improving tooth movement efficiency. The bimaxillary irradiation device uses precise lamp placement according to the periodontal ligament area, working in conjunction with the protective brace to fully cover the protective crown, synergistically avoiding thermal and light damage.

Embodiments of the present application provide a method and device for effectively removing tooth collision in the process of intraoral tooth movement, and a storage medium. The method comprises: obtaining a treatment plan for the teeth of a patient, the treatment plan comprising a plurality of sub-stages for moving the teeth of the patient from an initial position to a target position; determining a first tooth group in the treatment plan, the first tooth group comprising a plurality of teeth that are likely to collide in the process of moving from the initial position to the target position by a first moving manner; and determining, according to the relative movement relationship between the teeth in the first tooth group, a second moving manner for moving the first tooth group to remove the collision between the teeth in the process of moving the first tooth group. By changing the moving manner of the tooth group that collides, the tooth collision in the process of intraoral tooth movement is effectively removed.

The invention relates to medicine, and more particularly to orthodontics, and is intended for planning an orthodontic treatment and calculating the appropriate direction and amount of tooth movement. The technical results of the invention consist in improving the quality of orthodontic treatment and making it possible to plan the direction and amount of tooth movement required to obtain an optimal orthodontic treatment outcome. The proposed invention is directed toward the use of a method in which the direction and amount of tooth movement is calculated for the purpose of drawing up an orthodontic treatment plan.

Orthodontic systems and related methods are disclosed for designing and providing improved or more effective tooth moving systems for eliciting a desired tooth movement and / or repositioning teeth into a desired arrangement. Methods and orthodontic systems include the generation of an overcorrection in the tooth-receiving cavities of an appliance worn in the dentition. The overcorrection may provide an improved and more accurately applied force or moment applied to a tooth. The overcorrected force or moment can move a tooth closer to a desired position than if not overcorrected as sufficient force can still applied to the tooth as it gets closer to the desired position. The overcorrected force or moment may also better target the root of the tooth where the biological response to tooth movement occurs. The overcorrection may be calculated in various ways as described herein.

The application discloses an orthodontic scheme design auxiliary method based on tooth movement digital twin, relates to the technical field of orthodontic auxiliary, and comprises the following steps: acquiring patient oral cone beam CT data and tooth crown surface three-dimensional point cloud data, and constructing a three-dimensional geometric model of teeth-periodontal membrane-alveolar bone; discretizing the three-dimensional geometric model into a finite element grid, respectively giving periodontal membrane viscoelastic parameters, alveolar bone gray-mechanical mapping parameters and tooth linear elastic constants according to patient age, periodontal biotype and CT gray value, and forming an individualized tooth movement digital twin; determining a target displacement vector in the individualized tooth movement digital twin, calculating a correction force vector and a support requirement index, and assisting orthodontic scheme design according to the support requirement index. The application can effectively improve the accuracy, predictability and individualization level of orthodontic scheme design, reduce experience dependence and optimize overall correction effect.

This invention discloses a posterior molar-pushing orthodontic appliance, comprising a mechanical structure located at the molar site of the appliance, used to adjust the transmission mode of orthodontic force to achieve effective distal movement of the molars and avoid reciprocating motion. This mechanical structure includes: a retention device that partially or entirely encloses the tooth surface; a force-applying device, which is an elastic structure for applying directional force to the teeth; and a maintenance device connected to an anchorage device, rigidly connecting at least one tooth to the anchorage device to stabilize the moved teeth and prevent reciprocating motion. This invention also discloses a method for manufacturing this posterior molar-pushing orthodontic appliance. This invention optimizes the force application mode of the appliance, achieving precise tooth movement, thereby improving treatment efficiency and shortening treatment time.

The application discloses an oral endoscope auxiliary device and an oral endoscope, and relates to the technical field of medical equipment, and can solve the problems of shaking during handheld shooting, blind area coverage caused by operation without guidance, and focusing blur caused by depth of field of a traditional oral endoscope lens. The oral endoscope auxiliary device comprises a spatial positioning structure which is fixed opposite to a lens of the oral endoscope during shooting. The spatial positioning structure comprises at least one first contact part and at least one second contact part. The first contact part is configured to contact a first area in the oral cavity, and the second contact part is configured to contact a second area in the oral cavity. The first area and the second area are spatially separated. The first contact part and the second contact part jointly define the distance between the lens and a shooting area and the freedom degree of movement of the lens of the oral endoscope relative to the teeth, and keep the distance between the lens and the teeth unchanged and the freedom degree of movement of the lens unchanged. The oral endoscope auxiliary device can realize more comprehensive and clearer oral cavity examination.

This invention discloses an orthodontic attachment and kit for directional tilting movement of teeth. The attachment includes a base plate and a body, with an archwire channel within the body. The body has a vertical central axis parallel to the long axis of the tooth; the perpendicular line from the mesial-distal central axis of the archwire channel has an axial tilt angle α relative to the vertical central axis, with an absolute value of 5°–30°. This axial tilt angle α is oriented according to the preset mesial or distal movement requirements of the teeth, thereby automatically generating a tilting guiding force under the action of a straight archwire. Furthermore, the archwire channel has a specific chamfered structure at the exit (mesial or distal exit) on the tooth movement direction side, expanding the channel space outward to form an arc-shaped transition. This invention, through a preset overcorrective axial tilt angle combined with a directional exit chamfer design, achieves efficient directional tilting movement of teeth without the need for the dentist to bend the archwire, while effectively reducing the angular resistance between the archwire and the channel wall, solving the problems of insufficient power and high friction in the dynamic movement phase of traditional orthodontic attachments.