The reason to obtain the three-dimensional data information of tooth distribution is to design the orthodontic plan in the software system. The advantage of the direct method over the indirect method is that the data acquisition is more efficient and the accuracy is greatly improved. The doctor extends the optical scanning probe of the intraoral scanner into the patient's mouth to directly scan the soft and hard tissues such as teeth and mucosa, and obtain the three-dimensional digital model of the patient in real time, which is simple, efficient and accurate.

After the orthodontic plan is determined, the dental model after orthodontic treatment in each stage is obtained. After the dental model is 3D printed, there is a "mold" for making transparent braces.

The dental model is manufactured by 3D printing, which ensures high accuracy and high speed, and provides guarantee for the manufacture of transparent dental braces. At present, invisible braces manufacturers, including yinshimei, also use the press molding process to press transparent braces.



Usually, a patient needs to replace about 30-40 pairs of invisible braces to achieve the correction effect through the continuous light force on the teeth. 30-40 pairs of invisible braces mean that 30-40 orthodontic models need to be printed, and there are only very small differences between each model. If the traditional processing method is adopted, it is impossible to tailor and mass produce the correction model for patients in a short time. As a digital molding technology, 3D printing can transform any digital design into real objects. However, in the dental correction industry, 3D printing technology can precisely meet the two conditions of personalization and mass production. It can be said that invisible braces are an industry born of 3D printing. Next, we will introduce the 3D printing process of several dental models.