Authors
Caio Cesar Dias Resende, Tiago Augusto Quirino Barbosa, Guilherme Faria Moura, Lucas do Nascimento Tavares, Fabio Antonio Piola Rizzante, Furat George, Gustavo Mendonça, Flavio Domingues das Neves
Department of Occlusion, Fixed Prosthodontics and Dental materials, School of Dentistry, Federal University of Uberlandia, Uberlandia, MG, Brazil.
Abstract
Methods: Conventional impressions of a reference cast were obtained. Digital impressions were obtained with two intra-oral scanners: Cerec Omnicam (CO) and 3Shape Trios (ST). The obtained digital stereolithographic casts were printed on Zenith D 3D printer. The reference cast and fabricated casts were scanned with a bench top scanner and saved in STL format. All STL records were analyzed in specific software: complete arch (CA), partial arch (PA) and prepared teeth area (PT). One-way and two-way analyses of variance were performed to compare the accuracy, followed by the Tukey test.
Results: No significant intergroup differences in trueness and precision were observed for the two intra-oral scanners. 3D printed casts had the lowest trueness when complete arch was analyzed and differed statistically from the stone cast. For complete arch precision, stone cast presented better results, however statistically different only from the CO.
Conclusions: The two intraoral scanner systems had similar accuracy. Stone casts had higher trueness than 3D printed casts for CA. For CA precision, 3D printed cast presented similar results to the stone cast.
Login to Download PDF
Please login with your Paper ID and password to access the full PDF.
🔑 Login to Download📝 How to Cite
Caio Cesar Dias Resende, Tiago Augusto Quirino Barbosa, Guilherme Faria Moura, Lucas do Nascimento Tavares, Fabio Antonio Piola Rizzante, Furat George, Gustavo Mendonça, Flavio Domingues das Neves (2019). "Accuracy of conventional and digital methods for obtaining dental impressions and 3D printed models". Wulfenia, 26(8).