However, as the algorithms and scanning techniques evolve, Tomita et al. The early Flügge’s study claimed that the extraoral scanners performed better than intraoral scanners under the oral environment. Ĭonsidering the above factors, it is of clinical significance to evaluate the accuracy of intraoral and extraoral scanners. In addition, the selection of the impression materials and operation time will affect the accuracy of extraoral scanners, while the scanning range, light, and oral tissue will affect intraoral scanners. It has been reported that different scanning systems also contribute to different experimental results. Recent studies have shown that different scanning strategies can affect the accuracy of results. There are many factors that affect the scanning results and data collection.
Compared to the traditional technology, the scanning technology is undoubtedly time-saving and efficient. The extraoral scanner scans the impression model, and the intraoral scanner directly scans the patient’s oral cavity. And the files will be imported into the computer to complete the design and production. īy using the specific and intuitive model presented from intraoral and extraoral scanners, we can immediately obtain detailed information of the patient’s oral cavity and its digital files. Given the fact that the traditional prostheses gradually fail to meet the needs of patients, the use of intraoral and extraoral scanners in dentistry is becoming more and more common. With the emergence of digitalization, CAD/CAM systems have found an increasingly wide utilization in the field of prosthodontics on account of its considerable strengths. The sphere model has also been proven to be scanned successfully. SHINING showed the lowest level of accuracy, with CEREC slightly lower than TRIOS. In terms of trueness and precision, the scanner of SHINING was significantly different from that of others however, there was no significant difference between TRIOS and CEREC. In this study, we selected the sphere model as the scanning object and obtained the final result through data analysis and 3D fitting.
And the accuracy of the scanning system determines the ultimate accuracy of the prosthesis, which is a very important part of CAD/CAM, so we decided to evaluate the accuracy of the intraoral and extraoral scanners. With the popularization of digital technology and the exposure of traditional technology’s defects, computer-aided design and computer-aided manufacturing (CAD/CAM) has been widely used in the field of dentistry.