Next Article in Journal
Sorption of Molybdates and Tungstates on Functionalized Montmorillonites: Structural and Textural Features
Previous Article in Journal
Finite Element Prediction of Residual Stress and Deformation Induced by Double-Pass TIG Welding of Al 2219 Plate
Open AccessArticle

Comparative Evaluation of Mechanical Properties and Wear Ability of Five CAD/CAM Dental Blocks

Department of Dental Biomaterials, School of Dentistry, Chonbuk National University, 664-14, Duckjin-dong, Jeonju-city 561-756, Korea
*
Author to whom correspondence should be addressed.
Materials 2019, 12(14), 2252; https://doi.org/10.3390/ma12142252
Received: 19 June 2019 / Revised: 10 July 2019 / Accepted: 11 July 2019 / Published: 12 July 2019
  |  
PDF [5385 KB, uploaded 15 July 2019]
  |  

Abstract

This study compares the mechanical properties and wear ability of five CAD/CAM (computer-aided design/computer-aided manufacturing) millable dental blocks. All the discs, including Amber Mill Hybrid, Vita Enamic, Katana Avencia, Lava Ultimate, and Amber Mill, were cut in dimensions of 1.2 mm in thickness and 12 mm in diameter, polished to a machined surface, and immersed in distilled water for seven days. Vickers hardness was measured and the indentations were observed using microscope. The discs were brushed under a 150 g load. Mean surface roughness (Ra) and topography were determined after 100,000 cycles. Finally the biaxial flexure strength of the discs was measured and the broken surfaces were observed using scanning electron microscopy (SEM). The data was subjected to Weibull analysis. All data were analyzed by one-way analysis (ANOVA). The results of Vickers hardness are shown as: Amber Mill > Vita Enamic > Amber Mill Hybrid > Lava Ultimate > Katana Avencia. Katana Avencia showed the highest volume percentage reduction and the roughest surface after toothbrushing. The biaxial flexural strength is shown as: Amber Mill > Katana Avencia > Lava Ultimate > Amber Mill Hybrid > Vita Enamic. All the tested materials exhibited varying degrees of mass loss and surface roughness. The properties of the composite materials are related to the filler content, filler volume, and polymerization methods. View Full-Text
Keywords: hybrid ceramic; nano-composite resin; Vickers hardness test; wear test; surface roughness; biaxial flexural strength hybrid ceramic; nano-composite resin; Vickers hardness test; wear test; surface roughness; biaxial flexural strength
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Yin, R.; Jang, Y.-S.; Lee, M.-H.; Bae, T.-S. Comparative Evaluation of Mechanical Properties and Wear Ability of Five CAD/CAM Dental Blocks. Materials 2019, 12, 2252.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top