The invention relates to a manufacturing method of a computer-aided-design individual arch bar and the individual arch bar manufactured with the same. The manufacturing method of the computer-aided-design individual arch bar includes the steps of obtaining tooth-jaw-plaster-model three-dimensional data; constructing a tooth-jaw three-dimensional model; selecting a plurality of discretization fixed points at the portions, a set distance away from the edge of gingiva, of the labial buccal surfaces of teeth in the tooth-jaw three-dimensional model to generate a curved cylinder model, and generating curved-cylinder three-dimensional data corresponding to the curved cylinder model; carrying out Boolean subtraction operation on the tooth-jaw-plaster-model three-dimensional data and the curved-cylinder three-dimensional data to generate arch-bar-body three-dimensional data, and generating an arch bar body model corresponding to the arch-bar-body three-dimensional data; generating a plurality of drawing hook models and drawing-hook three-dimensional data corresponding to the drawing hook models; generating three-dimensional data of the arch bar; manufacturing the individual arch bar according to the three-dimensional data of the arch bar.

Computer-aided-design individual arch bar and manufacturing method thereof

Disclosed is a manufacturing method of a child forearm individualized protective support. The method comprises the following steps of 1 child patient limb three-dimensional information collection, 2 3D individualized palmaris and dorsal part support model design, 3 light-weight grid structure design and 4 3D printing to obtain a palmaris support and a dorsal part support. The individualized protective support is designed on the basis of specific three-dimensional information of the child patient limbs, 3D printing is implemented by means of 3D printing materials, and therefore the support canbetter fit the child patient limb body; due to the light weight design, the protective support relieves the child patient burden, the physiological resistance of the child patient is avoided, and themethod is better suitable for clinic application of the child patient.

Manufacturing method of child forearm individualized protective support

The invention discloses a customized bracket locator and a manufacturing method thereof. The manufacturing method comprises the following steps of obtaining a dental model of a patient, thickening thedental model, constructing a brace-shaped digital model, bonding on a dental digital model of an orthodontic bracket, obtaining the customized bracket locator and adding a baffle plate anti-drop device. The manufacturing method has the beneficial effects that the emplacement and location of the bracket are completed once; the chair-side operating time of a doctor is saved; such a step, which destroys bonding strength, of emplacing the bracket and then carrying out adjustment and the location is canceled; the bonding effect of the bracket is ensured; through a customized device, the patient isenabled to be more comfortable in the process of bonding the bracket; a customized mechanism can be used for meeting the location of a complete bracket, and can be also used for locating a bracket for a local individual tooth position; the bracket locator to which a baffle plate is added can be used for realizing an anti-drop effect before a bracket adhesive is not absolutely dry; the clinical retention by the doctor is unnecessary, and the efficiency is improved.

Customized bracket locator and manufacturing method thereof

A postoperative accuracy measurement method of implant operation includes the following steps: (A) carrying out model introduction; (B) selecting reference points; (C) carrying out model matching; (D)carrying out feature point construction: determining midpoints of root tips of implants as first feature points, taking midpoints of root tips of screw holes inside the implants as second feature points, and constructing central axes and/or other feature points with the first feature points and the second feature points; (E) repeating the step (D), and determining the feature points and/or central axes of all the implants in a preoperative model and a postoperative model; and (F) carrying out deviation measurement: measuring preoperative and postoperative deviations of all the feature pointsand/or central axes. The method not only eliminates the reconstruction error influence of the implant models, but also replaces the selection steps of the feature points of software itself through thefeature point construction, avoids the random error caused by different software due to different feature point selection algorithms and different reconstruction accuracy, and is of great guiding significance for standardized operation of clinicians.

Postoperative accuracy measurement method of implant operation

The invention relates to an auxiliary device for improving intraoral three-dimensional scanning precision of multi-tooth positions and a using method. The auxiliary device comprises a semi-cylinder with the appearance diameter of 3-10 mm, and the semi-cylinder is made of a soft material capable of being shaped at normal temperature; the semi-cylinder is used for being spliced to or tied to a basetooth or a tooth implant scanning rod for fixation to achieve intraoral three-dimensional scanning on the multi-tooth positions; the semi-cylinder is provided with several convex-concave-shaped structures, and the three-dimensional appearance of each independent convex-concave structure has uniqueness within the length of 12 cm; three holes are formed in the upper portion, the middle portion and the lower portion of the semi-cylinder respectively and used for being sleeved with or spliced to the tooth implant scanning rod or a tooth preparation body. When the auxiliary device is used for combined repairing on the multi-tooth positions, an accurate spatial position relationship of the multi-tooth positions is directly obtained through intraoral three-dimensional scanning, and multi-view data splicing errors of intraoral three-dimensional scanning on the multi-tooth positions are reduced accordingly.

Auxiliary device for improving intraoral three-dimensional scanning precision of multi-tooth positions and using method

The utility model relates to an individual arch bar which is matched with dentition of a patient. The individual arch bar comprises a main arch bar body and a plurality of traction hooks, wherein the main arch bar body adopts a curved half-cylinder body with a set radius, a set distance is formed between the edge of the main arch bar body and the edge of gingiva in the corresponding position, the main arch bar body is defined by a first curved surface and a second curved surface, the first curved surface is matched with buccal labial surfaces of teeth, and the width of the first curved surface is equal to the diameter of the curved half-cylinder body; the middle of the second curved surface is an outer surface of the half-cylinder body, and two ends of the second curved surface extend at a certain radian so as to be intersected with the first curved surface; and the plurality of traction hooks are arranged at a plurality of specified points in an intersection line of the first curved surface and the second curved surface, each specified point is located at the midpoint of the intersection line of the first curved surface and the buccal labial surface of each tooth, set distances are formed between the tail ends of the plurality of traction hooks and the section of gingiva in the corresponding position respectively, and the sizes of the plurality of traction hooks all adopt set values.

Xie Xiaoyan

Papers

Computer-aided-design individual arch bar and manufacturing method thereof

Individual arch bar