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Erschienen in: Odontology 3/2019

04.01.2019 | Original Article

Comparative evaluation of the mechanical properties of CAD/CAM dental blocks

verfasst von: Ruizhi Yin, Yu-Kyoung Kim, Yong-Seok Jang, Jung-Jin Lee, Min-Ho Lee, Tae-Sung Bae

Erschienen in: Odontology | Ausgabe 3/2019

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Abstract

This study compares the mechanical properties of commercially available CAD/CAM (Computer-Aided Design/Computer-Aided Manufacturing) millable dental blocks including Vita Enamic, Lava Ultimate, and MAZIC Duro. All the discs were cut in dimension of 1.2 mm in thickness and 12 mm in diameter, ground up to #1200 Sic papers and polished. The biaxial flexure strength of the ceramic discs was measured after thermocycling treatment and the broken surfaces were observed using scanning electron microscopy (SEM). The discs were brushed using a toothbrush testing machine under a 150 g load. Surface roughness and morphology were determined after toothbrushing cycles. Finally, the friction and wear behavior of the materials against an opposing tooth were studied using a reciprocating pin-on-plate test configuration. The vertical loss of dental cusp was measured, and the surface image was examined using field emission scanning electron microscopy (FE-SEM). The biaxial flexural strength data were subjected to Weibull analysis. To compare the significance between the groups, all data were analyzed by one-way analysis (ANOVA). The biaxial flexural strength of the Lava Ultimate and MAZIC Duro materials is significantly higher than that of Vita Enamic. In addition, Lava Ultimate and MAZIC Duro exhibited significantly smoother surfaces than that of Vita Enamic after toothbrushing. Lava Ultimate and MAZIC Duro also showed less wear to the opposing tooth than that of Vita Enamic. In addition, Lava Ultimate possesses more suitable mechanical properties than the Vita Enamic and Mazic Duro for use in oral clinical prosthesis.
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Metadaten
Titel
Comparative evaluation of the mechanical properties of CAD/CAM dental blocks
verfasst von
Ruizhi Yin
Yu-Kyoung Kim
Yong-Seok Jang
Jung-Jin Lee
Min-Ho Lee
Tae-Sung Bae
Publikationsdatum
04.01.2019
Verlag
Springer Japan
Erschienen in
Odontology / Ausgabe 3/2019
Print ISSN: 1618-1247
Elektronische ISSN: 1618-1255
DOI
https://doi.org/10.1007/s10266-018-0407-9

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