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Comparative Evaluation of the Reproductive Trueness of Zirconia Crowns Fabricated Using Additive Manufacturing and Conventional Milling

Shoko Miura, DDS, PhD/Takafumi Fujita, DDS/Shohei Tsukada, DDS/Daisuke Teshigawra, DDS, PhD/Konatsu Saito-Murakami, DDS, PhD/Masanori Fujisawa, DDS, PhD

DOI: 10.11607/ijp.7092

Purpose: To evaluate the occlusal reproductive trueness of zirconia crowns fabricated using additive manufacturing (AM) and to compare the surface roughness of crowns fabricated using AM and conventional milling (CM). Materials and Methods: Crowns were manufactured using AM and CM on abutments with total occlusal convergence angles of 16 and 20 degrees. Results: The surface roughness of the AM crowns was less than that of the CM crowns. The differences in reproduction of the occlusal morphology of the abutment crown were greater at 16 degrees than at 20 degrees. Conclusion: AM could be an effective method for manufacturing zirconia crowns.

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