A method for measuring the orthodontic force of non-marking aligners with coating thickness compensation
A technology of coating film thickness and measurement method, which is applied in the fields of dental prosthetics, medical science, dentistry, etc., can solve the problem of high sensor size, thickness and softness, tight contact area and contact gap, and difficult invisible orthodontic force and other problems, to achieve the effect of simple and easy measurement method, low cost, and solve inaccurate measurement
Active Publication Date: 2016-02-03
FUZHOU UNIV
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Problems solved by technology
At present, some scholars use strain gauges and force sensors to study the invisible orthodontic force. However, due to the small orthodontic force of the invisible orthodontics in stomatology, the contact area and contact gap between the tooth surface and the invisible aligner are tight. During the measurement process, the size and thickness of the sensor and softness requirements are high, it is difficult to directly and accurately measure the invisible correction force
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[0028] The invention has a method for measuring the orthodontic force of the non-marking appliance with coating thickness compensation. After the original digital model of the jaw is obtained, a sensor space is reserved on the original digital model of the jaw, that is, the sensor space is removed at the corresponding position on the surface of the tooth to be moved. The space adapted to the thickness and shape of the coating film of the sensor, that is, the coating film thickness compensation is performed to obtain the digital model of the tooth and jaw reserved for the sensor space, and the digital model of the target tooth and jaw is designed on the original digital model of the tooth and jaw according to the orthodontic plan, Then, according to the tooth and jaw digital model of the reserved sensor space and the target tooth and jaw digital model, the tooth and jaw solid model and the target tooth and jaw solid model of the reserved sensor space are made respectively; Ortho...
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The invention relates to a method for measuring the orthodontic force of a traceless appliance with coating thickness compensation. The method is characterized by comprising the following steps of reserving a sensor space in an original digital dental model after the digital original dental model is obtained, i.e., a space adaptive to the coating thickness and shape of a sensor is removed from the corresponding position on the surface of a tooth to be moved, which means that the coating thickness compensation is performed to obtain the digital dental model with a reserved sensor space; designing a digital target dental model on the original digital dental model according to an orthodontic scheme, and manufacturing the sensor-space-reserved solid dental model and a solid target dental model; and manufacturing a traceless appliance on the solid target dental model, mounting the sensor on the sensor-space-reserved solid dental model, wearing the traceless appliance on the sensor-space-reserved solid dental model and measuring the orthodontic force by virtue of the sensor. The method is accurate in measurement, simple and practical, and low in implementation cost.
Description
technical field [0001] The invention relates to the technical field of measuring the orthodontic force of a non-marking appliance in stomatology, in particular to a method for measuring the orthodontic force of a non-marking appliance with coating film thickness compensation, which can be used to measure and analyze the stress in the process of toothless orthodontics . Background technique [0002] Bracket-free clear aligners appeared in the United States in 1997. On the basis of computer-aided design and processing, invisible aligners without brackets have attracted the attention of doctors and patients for their invisible, beautiful and comfortable features. In recent years, the development of clear aligners without brackets has been rapid, and the scope of its correction has also been continuously expanded. [0003] The whole workflow of the invisible orthodontic technology without brackets is: taking the positive or negative mold of the teeth and jaw, obtaining the dig...
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IPC IPC(8): A61C19/04A61C7/00
Inventor 何炳蔚吕翱刘丽萍沈恒华
Owner FUZHOU UNIV