Real-time detection method of orthodontic force of bracket-free seamless appliance

Abstract

The invention provides a real-time detection method of orthodontic force of a bracket-free seamless appliance specific to real-time detection problem of orthodontic force of the bracket-free seamless appliance for stomatology. Aiming at the phenomenon that the orthodontic force of the seamless appliance for stomatology is small and the contact area and contact gap are small when the seamless appliance is worn on teeth surfaces, the real-time detection of the orthodontic force of the bracket-free seamless appliance can be realized by using the piezoresistive effect of a thin-film single-point sensor and the excellent physical properties such as small size, soft material and thinness of a sensor, and the stress variation trend of one tooth or an arbitrary part on multiple teeth can be detected according to research needs; and through research of acting force system and acting effect of the seamless appliance, an orthodontist formulates a relatively reasonable and effective therapeutic scheme, and a designer designs a relatively perfect individual seamless appliance; and the real-time detection method is high in detection accuracy, good in timeliness, simple and practicable in a detection process and low in cost.

Description

technical field [0001] The invention relates to the field of measurement of no-bracket and trace-free orthodontic force in stomatology, in particular to a real-time detection method for the correction force of a no-bracket and trace-free appliance. Background technique [0002] Bracket-free orthodontic appliances appeared in the United States in 1997. The so-called no-bracket and trace-free orthodontic technology is compared with the traditional fixed orthodontic technology. These are called "bracketless" aligners. The emergence and development of bracketless and traceless orthodontic technology has integrated modern orthodontics, digital image acquisition and processing technology, rapid prototyping technology and other multi-disciplinary and multi-field scientific and technological achievements. From the collection of three-dimensional dental digital model information, the digital design of the appliance, the visual communication between doctors and patients, to the digi...

AI Technical Summary

Problems solved by technology

However, there are many problems with this measurement method: first, the surface of the tooth is uneven, and the inner surface of the corresponding appliance is also uneven. The strain gauge is solid and the material is hard, so it is not suitable for pasting. on such a surface

Although this method can analyze the pressure distribution of each point, once the pressure-sensitive paper is taken out, it is difficult to determine the corresponding position of each color point on the tooth, and this method is more suitable for qualitative analysis rather than quantitative analysis. force

[0007] The most direct way to measure the unmarked orthodontic force is to use a force sensor. However, the traditional force sensor is solid-state. Due to technical limitations, the size and thickness cannot be small enough to adapt to the tiny orthodontic force of the non-marked orthodontic appliance in stomatology. , the test situation where the contact area and contact gap between the tooth surface and the non-marking appliance are small

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