7 results about "Mandibular arch" patented technology

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.

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.

A method of producing a retention piece having a guidance package configured to provide a desired movement profile including: obtaining data descriptive of mandibular and maxillary arches, an index position of the mandibular arch at a maximum closure position, and a temporomandibular joint of a recipient; specifying an appropriate guidance package based on the desired movement profile; positioning a retention piece comprising at least a portion of the specified guidance package about virtual representations of at least one of the mandibular and maxillary arches within a virtual articulator; modeling relative movement of the virtual representations of the mandibular and maxillary arches within the virtual articulator; and generating data that can be used by a computer aided machining (CAM) process to create at least one physical retention piece comprising the specified guidance package configured to provide the desired movement profile.

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.

The utility model discloses a digital Gothic bow device which comprises an upper jaw bow matched with the upper jaw of a patient and a lower jaw bow matched with the lower jaw of the patient, and the upper jaw bow and the lower jaw bow are detachably provided with an occlusion piece used for obtaining a closed impression or a tracing piece used for obtaining the median jaw position relation. At least one of the maxillary arch and the mandibular arch is adjusted, that is, the inside of the mouth of a patient is adjusted according to clinical practice, and a correct jaw plane is obtained. A jaw plane is used as a reference and matched with the occlusion pieces, the closed impression of a patient is obtained through closed occlusion of the patient, the patient occludes in a closed mode and is in a correct occlusion relation, the upper occlusion piece and the lower occlusion piece make close contact, the more accurate closed impression is obtained, and the edge of the occlusion relation position is more accurately shaped. And by matching with a tracing piece, the median jaw position relationship of the patient is accurately obtained, the problem of equally dividing the occlusion gap according to personal experience is solved, and the jaw position relationship better conforms to the actual occlusion condition of the patient.

Device (100) for a hand-operated therapeutic jaw exercise, comprising: a lower mandibular arch plate (102) configured to apply force to the incisors of a mandibular arch; a quadrant plate (104) which supports the lower mandibular arch plate (102) for rotation about a pin (106) which is mounted on a stand of the quadrant plate (108); a rod (110) connecting the lower mandibular arch plate (102) to the quadrant plate (104); a yoke (112) that engages with the bar (110) to form a Scotch yoke mechanism; a rack (114) which extends integrally from the yoke (112) and is provided with teeth; a pinion (116) that engages with the rack (114) to form a rack and pinion mechanism; and a pinion (116) wherein the pinion (116) engages with the rack (114) to form a rack mechanism; a hand lever (118) extending from a central shaft of the pinion (116) and supported by a hand lever stand (120), wherein a rotation of the hand lever (118) actuates the pinion (116) to move the rack (114) back and forth, the yoke (112) slides and the quadrant plate (104) is rotated around the pin (106), thereby opening the lower mandibular arch plate (102) in a circular arc and enabling locking in any angular position for therapeutic jaw exercises.

A method for determining whether a tooth is correctly shaped and oriented to avoid interfering with another tooth using virtual articulation. The method includes a) receiving, by a computing device, data indicative of a virtual dentition of an oral cavity of a patient, the data indicative of the virtual dentition including data indicative of at least one of a virtual mandibular arch representing a mandibular arch of the patient or a virtual maxillary arch representing a maxillary arch of the patient; b) receiving data indicative of a selected point on the virtual dentition of the oral cavity; and c) determining a tangent vector indicative of a direction of motion of the selected point, and determining whether an orientation of a tooth of the virtual dentition or a shape of the tooth is correctly shaped and oriented based on the determined tangent vector, wherein the tangent vector is based on an axis of rotation of the virtual mandibular arch.