247 results about "Tooth movement" patented technology

A computer-implemented method treats teeth by generating a digital arrangement of teeth; specifying a sequence of tooth movements to move the teeth to a target arrangement; and generating one or more appliances in accordance with the specified sequence of tooth movements, the appliances comprise polymeric shells having cavities and wherein the cavities of successive shells have different geometries shaped to receive and resiliently reposition teeth from one arrangement to a successive arrangement.

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 invention discloses a digitalized making method of a dental orthodontic appliance. The digitalized making method comprises the steps of acquiring CT (Computed Tomography) data and carrying out intraoral scanning; reconstructing a three-dimensional oral tissue model to obtain bones and teeth; reconstructing intraoral scanning data to obtain gingivas and accurate teeth; compounding two models to obtain a composite model; calculating key parameters including tooth movement amount, required orthodontic force and moment, and force applying mode and the like, discharging a treated target dentition; accurately calculating a mode of moving each tooth and a movement distance or an angle, calculating a required force and moment; calculating required shape and size parameters of an SMP force applying mechanism, and further designing a force applying unit; generating an immobilizing structure according to the three-dimensional model of each tooth on the basis of the surface; designing accessories according to certain special movements so as to obtain an integral structure of an integrated orthodontic appliance; making an integrated orthodontic appliance by using a three-dimensional printer integrally formed from multiple materials, and providing the integrated orthodontic appliance for being clinically used by a doctor; and during clinical use, heating the integrated orthodontic appliance to a phase change temperature to ensure that the force applying unit becomes soft and is conveniently adhered and fixed on the surface of the tooth. An integrated fixed appliance manufactured by using the method comprises a force applying unit, an immobilizing unit and accessories.

A computer-implemented method treats teeth by generating a digital arrangement of teeth; specifying a sequence of tooth movements to move the teeth to a target arrangement; and generating one or more appliances in accordance with the specified sequence of tooth movements, the appliances comprise polymeric shells having cavities and wherein the cavities of successive shells have different geometries shaped to receive and resiliently reposition teeth from one arrangement to a successive arrangement.