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Transverse microhardness of artificial teeth

Regina Tamaki, Carolina Mayumi Iegami, Priscila Nakasone Uehara, Ricardo Jun Furuyama, Rafael Yague Ballester

Abstract


Objective: Hardness is an indicator of several mechanical properties of artificial teeth, also related to wear resistance. The purpose of this article is to map the microhardness of artificial teeth as a function of depth and commercial brand. Methods: Knoop microhardness of sectioned artificial second molars was measured every 200 µm starting at a depth of 100 µm up until 4700 µm of the following brands: Premium (Pr), Orthosit (Or), SR Postaris DCL (Po), Biotone (Bi), Artiplus IPN (Ar), VITA MFT (Vi), Natusdent (Na), Trilux (Tr), and Biolux (Bx). Results were analyzed with ANOVA for repeated measures and Tukey test (5%). Results: SR Orthosit PE commercial brand presented higher hardness values (until the depth of 3.1 mm was 30 N/mm2), significantly higher than the other brands analyzed. Conclusion: Knoop hardness did not present differences between layers for eight of the nine brands studied. Different hardness values were found between superficial and cervical areas for the brand SR Orthosit PE.


Keywords


Artificial Tooth; Hardness; Acrylic Resins

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DOI: http://dx.doi.org/10.11606/issn.2357-8041.clrd.2015.122750

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Copyright (c) 2016 Carolina Mayumi Iegami, Regina Tamaki, Priscila Nakasone Uehara, Ricardo Jun Furuyama, Rafael Yague Ballester

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.