45 results about "Orthodontic technology" patented technology

The invention discloses a planting nail positioning device and relates to the technical field of orthodontic treatment. The planting nail positioning device comprises a planting nail implanter and ischaracterized by also comprising a sleeve, a sleeve limiting rod and a positioning rod, wherein the positioning rod is formed by a horizontal arm and a vertical arm. With simple structure and reasonable design, the device can remarkably reduce risk of injuring the root of adjacent tooth in a planting process, so as to realize accurate positioning and guide the implantation of the planting nail; meanwhile, the device shortens time of operation next to a chair, and has the advantages of convenience in operation, high practicability, great value in clinical application and broad market prospect.

The invention belongs to the technical field of tooth orthodontics and in particular relates to a double-wire straight wire arch correction device and a tooth correcting method. The device consists of a bottom plate and a double-wire arch supporting groove which is fixedly connected to the bottom plate, wherein a main groove and an auxiliary groove which are parallel to each other are formed on the double-wire arch supporting groove; the main groove is positioned on a combined side of the teeth and is a square groove; and the auxiliary groove is positioned on the root side of the teeth and has the same width and depth as those of the main groove, and the bottom of the auxiliary groove is arc-shaped. The tooth correcting method comprises the following steps of: aligning and leveling the teeth in the main groove by using a titanium-nickel round wire at the initial stage of the correction; using a stainless steel round wire in the main groove after the teeth are aligned in the main groove, controlling the root of the teeth in the auxiliary groove by using the titanium-nickel round wire, namely aligning the root of the teeth; and closing the gap by independently using a stainless steel square wire in the main groove after the root of the teeth is controlled. The root control correction force can be obviously reduced, the risk of absorbing the root of the teeth in the correcting process is reduced, the process of bending the clinical arch wire can be simplified, the treatment defect brought by error of the bent arch wire is overcome, and the double-wire straight wire arch correction device and the tooth correcting method can be applied to tooth extraction cases.

The present invention relates to the technical field of digital orthodontics, in particular to a tooth modeling method suitable for digital orthodontics with gingiva, which adopts the following steps: A. Using the segmented crown surface to establish a tooth local coordinate system; B. Through the root coordinate axis of the coordinate system, determine the cross-sectional profile of the tooth root; C. Carry out two-dimensional triangulation on the bottom surface of the tooth root, and add position constraints and tangential constraints to control the convex shape; D. Use the clustering method based on plane approximation and two Three-dimensional triangulation to generate the tooth side mesh; E. Use the Hermite surface interpolation algorithm to optimize the side mesh; F. Fusion the shape of the crown, bottom surface, and side surface to make the tooth a closed and complete triangular mesh model; it can only rely on The 3D model obtained by the scanner accurately reconstructs the teeth and gums to form a complete closed triangular network model, which can be used for orthodontic digital applications such as tooth arrangement design, orthodontic animation demonstration and 3D printing.

The invention belongs to the technical field of digital orthodontics in the field of digital medical treatment, and in particular relates to a method for detecting the state of orthodontic treatment of teeth in the course of orthodontic treatment. The invention utilizes the photographed teeth of the patient, and based on the computer two-dimensional image processing technology and the computer three-dimensional modeling technology, to detect the patient's tooth correction state at low cost. The invention makes it possible for the patient to detect the state of orthodontic treatment at home, without the need for the patient to go to the hospital for oral scanning or tooth bite, which greatly reduces the cost of the patient and the hospital. At the same time, the solution of the present invention directly uses the patient's tooth model before orthodontic treatment to detect the patient's orthodontic status, so the patient's previous digital orthodontic solution can be directly reused, greatly reducing the cost of orthodontics.

The invention relates to the technical field of orthodontics, and discloses an arch wire bending method. The arch wire bending method comprises the following steps: step 1: introducing a design outline drawing or design curve data of an arch wire into a cutting machine, and using the cutting machine to cut a groove on a thin plate according to the design outline drawing or the design curve data, specifically, the shape of the groove is consistent with the designed shape of the arch wire; step 2: clamping the arch wire to be bent into the groove; step 3: pressing at least one first pressing plate to be above the thin plate; step 4: placing the first pressing plate and the thin plate in a heating device for heating and heat preservation, and after the arch wire is formed, taking the first pressing plate and the thin plate out of the heating device; and step 5: removing the first pressing plate from the thin plate, taking the arch wire out of the groove, and performing the surface treatment on the arch wire. The arch wire bending method has the advantages of simple operation, high bending precision and low cost.