41 results about "Orthodontic retainer" patented technology

The present invention relates to an orthodontic retainer to be fitted to an orthodontically treated dentition in order to fix the teeth in their orthodontic treatment state. In particular, the present invention relates to an orthodontic retainer that achieves, for example, improvement of strength of the retainer, improvement of wearing comfort and esthetics, reduction in cost, and improvement of a function as the retainer.

A dental carrier comprises a thermoplastic carrier. The thermoplastic carrier has a pattern structure. After heating the thermoplastic carrier, the thermoplastic carrier is provided with a user to be impressed by teeth or alveolar ridge for forming teeth or alveolar ridge model of the user. Compared to the prior art, the dental carrier of the present invention can provide the dental medicament contained in the pattern structure to be precisely applied and hold onto the treatment area and the medicament can be evenly coated on the teeth, root, or periodontal tissue for the treatment of teeth. When the dental carrier is not used to carry medicament, the pattern structure can improve the mechanical strength and fitness of the dental carrier to be used as a biteplate, orthodontic retainer, periodontal dressing for treatment or protection or mouth guard in sports.

A dental retainer device for stabilization, so-called retention, of pairs of teeth or groups of teeth in a lower jaw and/or an upper jaws in orthodontic treatment. The retainer device is formed of a pair (2) of retainer elements, consisting of two preferably individual, but in the position of use cooperating, retainer elements (4, 6). Each of the retainer elements (4, 6) is formed in with a retainer approximal surface (16, 18), the retainer approximal surfaces (16, 18) being formed complementary relative to one another. In use, one or more pairs (2) of retainer elements is/are positioned and secured with its/their individual elements (4, 6) preferably on the inner face of a tooth (20, 22) each of a pair of adjacent teeth, so that in the position of use the retainer approximal surfaces (16, 18) bear on each other and support, possibly lock, each other. Thereby pairs of teeth or groups of teeth are stabilized while it is possible at the same time to carry out normal dental hygiene by means of a toothbrush, dental floss or toothpicks, which is otherwise difficult to carry out when known retainers are used.

The invention discloses a direct manufacturing method of a customized lingual orthodontic retainer by selective laser melting. The method comprises the following steps: measuring dentition data to obtain shape structure parameters of teeth, establishing a CAD model of teeth by reverse engineering, designing a CAD structure model for a single lingual retainer according to orthodontic requirement and teeth shape characteristics, guiding the model to a selective laser melting forming machine, and directly making a metal retainer body by a lamination manufacturing method; bending a wire of the retainer according to groove shape of the retainer, welding the wire with the groove by a laser welding method. The method for manufacturing the orthodontic retainer by direct selective laser melting forming can realize customized production according to individual requirements, the obtained retainer is matched with the teeth shape and has high precision without deformation, and suitable for long-term use, has thin thickness, short manufacturing cycle; and direct forming of the retainer saves procedures, time and cost, so the method has wide application scope.

The present invention addresses the problem of providing an orthodontic retainer with which there are no aesthetic concerns and smooth pronunciation during conversation is possible, and which is able to secure favorable fitting and can be worn for long periods. The retainer is configured so that, by being fitted so as to surround the entire dental arch (T) of the maxilla (A) or the mandible and by the inner surface being fitted, on the front and back surfaces of the entire dental arch (T), with a specified vertical width (H) that encompasses the cervical sections (T1, T2) of said teeth, a retaining force is applied on a portion of the crown (T3) of each tooth from the front and back surfaces.

The invention concerns a mounting device for a pair (2) of orthodontic retainer elements (4, 6) intended for attachment to a pair of adjacent teeth (20, 22) during passive orthodontic treatment. Each retainer element (4, 6) includes a dental attachment surface (12, 14), an approximal surface (16, 18) and an oral surface (8, 10). At least one portion of the approximal surface (16) of one retainer element (4) is formed complementary to at least one portion of the approximal surface (18) of the other retainer element (6). These approximal surface portions form adjacent contact surfaces that will stabilize each other when the pair (2) of retainer elements (4, 6) is attached to the pair of adjacent teeth (20, 22) in the dental arch, thus also stabilizing the adjacent teeth (20, 22). The mounting device comprises a jig (24; 48; 56) to which the pair (2) of retainer elements (4, 6) is releasably connected, wherein the pair (2) of retainer elements (4, 6) is maintained mechanically in a specific spatial relationship relative to each other. Said spatial relationship is defined as the spatial relationship required between the pair (2) of retainer elements (4, 6) when mounted on the pair of adjacent teeth (20, 22). The invention also concerns a method of maintaining a correct spatial relationship between a pair (2) of such retainer elements (4, 6), particularly in the process of attaching the retainer elements (4, 6) to said pair of adjacent teeth (20, 22).

A cast orthodontic retainer system for reducing discomfort and improving durability. The cast orthodontic retainer system generally includes a palatal portion for positioning against the palate of a patient's mouth and a retention portion for extending across an anterior portion of the patient's teeth. The palatal portion of the present invention is fabricated of a cast metallic material, thus allowing for the palatal portion to be substantially thinner than the palatal portions of retainers in the prior art. In a preferred embodiment, the palatal portion of the present invention will be fabricated of a combination of cobalt, chromium and molybdenum (generally marketed under the trademark VITALLIUM). The palatal portion of the orthodontic retainer is preferably cast from the metallic material utilizing the “lost wax” technique of casting.

The invention discloses a partitioned dental membrane and a manufacturing method thereof. The surface of the partitioned dental membrane is provided with a direction indicator sign; according to the different stress-bearing points for stress which is born during the manufacture of a hidden correction device or an orthodontic retainer during usage of the partitioned dental membrane, the surface ofthe dental membrane is divided into four partitions according to different positions of a dental model on the surface of the dental membrane, namely a midline exterior incisor partition, a midline exterior molar partition, a midline interior incisor partition, and a midline interior molar partition; different membrane thickness is provided for each partition. The partitioned dental membrane can bemade into a product with different partitions' thickness kept uniform when applied to the manufacture of hidden correction devices or orthodontic retainers; the partitioned dental membrane enables corrective force to be expressed more evenly during correction with rarity of cracking.

The invention discloses a manufacturing method of an individualized tongue-side orthodontic retainer, comprising the following steps: taking a dental model; establishing a three-dimensional CAD model;drawing an arch wire flat surface and an arch wire, and designing a single retainer CAD structure model; guiding the single retainer CAD structure model into a fast wax pattern machine to obtain a retainer wax pattern; casting the retainer wax pattern, and obtaining the retainer after necessary surface processing; guiding a two-dimensional CAD model of the arch wire into a precise marking machineto obtain a pattern with the same shape and size with the arch wire; bending to obtain the arch wire according to the pattern, and welding the arch wire and the retainer together by a laser welding method; and then placing the retainer on the dental model to carry out integral vacuum film pressing to obtain a positioning pallet. The invention can realize the individualized production according toindividual demand; in addition, the prepared retainer is matched with a tooth shape, has high precision and lasting non-deformation, is suitable for being worn for a long time by patients and has thin thickness, good anchorage stability and convenient clinical operation. The manufacturing method is widely used for the production process of the orthodontic retainer.

A lidded plastic container has a plunger in the lid which pushes dental appliances down into a cleaning solution. The container includes vent holes in its lid to allow gas-evolving cleaning agents to vent without building up pressure inside the container and to drain the fluid from the container.

A lidded plastic container has a plunger in the lid which pushes clear trays (that usually float) down into a cleaning solution. The container may include vent holes in its lid to allow gas evolving cleaning agents to vent without building up pressure inside the container.

An orthodontic anchor having a stem with a connecting portion and an emerging portion secured respectively to the ends thereof. The connecting portion is connected to bone by screws disposed in angled apertures and a cap envelops the emerging portion. A first transverse rib secured to the lower edge of the cap and a second transverse rib secured to the anchor between the connecting and emerging portions and an elastic band enveloping both transverse ribs.

A lidded plastic container has a plunger in the lid which pushes dental appliances down into a cleaning solution. The container includes vent holes in its lid to allow gas-evolving cleaning agents to vent without building up pressure inside the container and to drain the fluid from the container.

The invention relates to a three-dimensional orthodontic retainer (2) and to a method for producing such a retainer (2) in which the three-dimensional orthodontic retainer (2) is matched to the exactshape of the adjacent teeth (3) and is produced from a blank (1) in such a manner that the physical properties of the material of the remaining part of the blank (1) are unchanged in the retainer (2).The method for producing the three-dimensional orthodontic retainer (2) comprises the following method steps: creating a three-dimensional model of the structure of the patient's teeth (3); designinga customised, precisely fitting model of the retainer (2); producing the retainer (2) on the basis of the designed 3D model by computer-controlled deposition or application of material.