Die-free digital adaptation method for dental prosthesis

Abstract

The invention discloses a die-free digital adaptation method for a dental prosthesis. A scanner is used for scanning the oral disease site of a patient to acquire three-dimensional data of the disease site, a dental prosthesis product is designed and processed on the basis, the processed finished product is scanned and sampled again by the scanner, digital point cloud information of the product is acquired, three-dimensional sampled data of the product are compared with original design data to obtain processing errors of the dental prosthesis product as a preliminary adaptation result, and the three-dimensional sampled data of the product are compared with three-dimensional sampled data of the oral disease site to obtain adaptability of the dental prosthesis product and the oral disease site. An improvement foundation is provided for product design by performing adaptation twice. The method overcomes the shortcomings of a complicated traditional method, material cost is reduced, product manufacturing and detecting time is shortened, detection accuracy is improved, and the burden of a technician and a doctor is greatly relieved.

Description

Technical field [0001] The invention relates to the detection of oral restorations, in particular to a modelless digital adaptation method for oral restorations. Background technique [0002] With the development of society and the continuous improvement of people's living standards, people's pursuit of beauty has gradually increased. More and more people are paying attention to their dental health problems. Many people have different degrees of dental diseases, such as tooth decay, missing teeth, periodontal disease, and irregular teeth. The third national oral health epidemiological survey shows that the prevalence of oral diseases in my country is as high as 90%. Many studies have proved that oral diseases not only affect the physiological functions of the oral cavity, but also affect the health of the whole body to varying degrees, and even become an important cause of some systemic diseases. [0003] The continuous development of science and technology and the higher require...

AI Technical Summary

Problems solved by technology

[0006] For the detection of the processed restorations, the detection methods in the general dental laboratory are relatively simple. Calipers are used to detect the size, and at the same time, the suitability is observed by trying it on the plaster dental model. is a rather complicated process

At the same time, the measurement accuracy of calipers is limited, and it is more suitable for the measurement of parts with regular shapes. However, for an oral restoration product, its shape is irregular and composed of many complex curved surfaces. The basic dimensions such as length, width, height, and depth are measured, and the measurement error is relatively large. The accuracy of the measurement is related to the instrument itself and the operator.

On the other hand, this measurement method cannot analyze the accuracy of each part of the formed product

The deformation of the product cannot be directly measured, there is no strict quantitative index, and it cannot be visualized

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